The application relates to a tube for being introduced into an object. The tube (1), which is preferentially a catheter, comprises a tube-like braid (2) made from electrically conductive strands (3), wherein ends (4) of the strands (3) are staggered in the longitudinal direction of the tube (1). Since the ends of the strands are staggered in the longitudinal direction of the tube, local radio frequency heat generated during a magnetic resonance imaging procedure is not concentrated at a single longitudinal location, but distributed along a staggered region in the longitudinal direction of the tube, in which the ends of the electrically conductive strands are staggered. This distribution of the radio frequency heat along the longitudinal direction of the tube reduces the maximum temperature produced by radio frequency heating and, thus, the likelihood of damaging the object, in which the tube is to be introduced, due to heat.
An apparatus for and a method of correcting an image for an image artifact. An initial image is corrected by an image artifact corrector (190). The so corrected sample correction image is compared with the initial image to obtain information on the corrective action. The corrective action is then adaptively reapplied by a controller (140) to obtain an improved corrected image thereby ensuring previously present artifacts are removed and creation of new artifacts are avoided.
The invention relates to a self lubricated sliding bearing (1) with a curved groove (17) geometry. In order to provide increased load carrying capability and reduced friction without the necessity to change existing dimensions of the bearing and possibly at the same time to provide improved landing behaviour the sliding bearing (1) comprises a bearing shaft (5) and a bearing bushing (7) with curved grooves (17). In particular, the bearing bushing (7) encloses the bearing shaft (5) concentrically and is rigidly connected to an anode disc (9) and to a rotor (11). Moreover, the bearing bushing (7) is ratably arranged on the bearing shaft (5). The bearing shaft (5) comprises a first face (13) and the bearing bushing (7) comprises a second face (15) which are rotable with respect to each other. At least one of the first and the second bearing faces (13, 15) comprises a plurality of curved grooves (17).
For generating a three-dimensional model (60) from an object of interest optical tomography raw data acquired from the object and X-ray image data acquired from the object (50) is used to select a reference model of the object (18) from a plurality of reference models based on the X-ray image data and the optical tomography raw data. The three- dimensional model is generated from the reference model by adjusting the reference model to the X-ray image data.
The present invention relates to a plug-in lamp, in particular for a bike, comprising a housing (3) with at least one light source (8) arranged in said housing (3). The housing (3) has an emission window (4) for the light source (8) and is designed for complete insertion of at least a portion of the housing (3) into a tubular adapter opening. The lamp comprises one or several elements (5) allowing a mechanical connection between the housing (3) and the adapter (1). The light source (8) is thermally connected to said portion and/or to said one or several elements (5) to achieve a main discharge of heat generated by the light source (8) through the portion and/or elements (5). The proposed plug-in light source can be provided lightweight and with low cost and allows an effective cooling of the light source.
A transparent capacitive powering system (200) is disclosed. The system comprises a pair of receiver electrodes (241, 242) connected to a load (250) through an inductor (260), wherein the inductor is coupled to the load to resonate the system; and a transparent infrastructure (220) having at least a first layer (130) of a non-conductive transparent material and a second layer (120) of a conductive transparent material coupled to each other, wherein the second layer is arranged to form a pair of transmitter electrodes (221, 222), wherein the pair of receiver electrodes are decoupled from the second layer, thereby forming a capacitive impedance between the pair of transmitter electrodes and the pair of receiver electrodes, wherein a power signal generated by a driver (210) is wirelessly transferred from the pair of transmitter electrodes to the pair of receiver electrodes to power the load when a frequency of the power signal substantially matches a series-resonance frequency of the first inductor and the capacitive impedance.
The present invention relates to a semiconductor laser device, in particular a V(E)CSEL,using current-limiting apertures to tailor the gain profile of the laser. The laser comprises a layer stack sandwiched between a n-contact (7) and a p-contact (2), said layer stack at least containing an active region (5) and a p-doped semiconductor mirror (1) arranged on a p-doped side of the layer stack. At least two current-limiting apertures (3, 4) are arranged on the p-doped side, a second (4) of said current-limiting apertures being closer to the active region (5) and having a larger aperture size than a first(3) of said current- limiting apertures. With such a structure of the semiconductor laser a nearly gaussian carrier density profile, a good heat dissipation and an improved laser performance can be achieved.
H01S 5/183 - Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]
The invention relates to a current determination apparatus for determining an operational driving current for driving a light source of a group of light sources. A same color shift function defining a light color shift depending on a driving current can be provided for all light sources of the group. An operational driving current is determined based on the color shift function such that the light color (43) of the light source of the group of light sources is shifted from a nominal color, which may be specific for each light source, to a light color (45) within a target color window (41). Since for the different light sources the same color shift function can be used, a determination of invidual operational driving currents such that the light sources of the group emit light having substantially the same color can be simplified.
The present invention relates to vacuum nano electronic switching and circuit elements based on hollow electron conductors evacuated by an evacuator, which can overcome some basic limitations of solid state (ULSI) integrated circuits. This can be realized by using a semiconducting nano tube (60), e.g. carbon nano tube,with a small emitting material spot inside, interconnect it at the sides with a conducting nano tube (40) and connect to a collecting conducting nano tube (72). Also multiple connections at the side of a semiconducting nano tube (60) can be made and a whole network of vacuum nano ICs can be designed.
H01L 51/00 - Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
B82B 1/00 - Nanostructures formed by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units
H01L 21/02 - Manufacture or treatment of semiconductor devices or of parts thereof
G11C 13/02 - Digital stores characterised by the use of storage elements not covered by groups , , or using elements whose operation depends upon chemical change
Van Keersop, Arnoldus Theodorus Martinus Hendricus
Abstract
The present invention relates to a lighting device (7) comprising a first and a second light generating means (701, 704), and a method (1300) of manufacturing such a lighting device. A linear combination (103) of the first and second light generating means provides an output optical spectrum having an output CCT between a first CCT of the first light generating means and the second CCT of the second light generating means. Further, color points (101, 102) of the first and second light generating means are more green and/or yellow than the black body locus (10) of a chromaticity space (1), and the optical spectrum of at least one of the achievable combinations provides an output color point in the chromaticity space being more red than the black body locus. The present invention is advantageous in that the output CCT of the lighting device may be tuned and a high illumination quality is provided.
A method and a configuration unit for configuring a lighting system (1), wherein the lighting system comprises an illumination device (2) arranged to illuminate a space (3). The method comprises the steps of monitoring a location of a target (8) within the space for a setting of a lighting of the lighting system. Furthermore, the method comprises the step of establishing a correlation between the setting and the monitored location of the target.
A fiducial position marker (1) for use in a magnetic resonance (MR) imaging apparatus is disclosed for exciting and/or receiving MR signals in/from a local volume which at least substantially surrounds or adjoins the position marker, in order to determine and/or image from these MR signals the position of the position marker in an MR image of an examination object. Such a position marker (1) is especially used for determining and/or imaging a position of an interventional or non-interventional instrument to which the position marker may be attached, like a catheter, a surgical device, a biopsy needle, a pointer, a stent or another invasive or any non-invasive device in an MR image of an examination object. Further, a position marker system comprising such a position marker (1) and a circuit arrangement (5, 6, 6a, 8) for driving the position marker (1) for exciting MR signals and/or for processing MR signals received by the position marker is disclosed.
The Magnetic Resonance Imaging (MRI) system includes a radio-frequency transmitter with multiple transmit channels. The MRI system includes an impedance matching network (320, 1402, 1502, 1602) for matching the radio-frequency transmitter to a remotely adjustable radio-frequency antenna (310, 1504, 1602) with multiple antenna elements (312, 314, 316, 318, 1404). The MRI system includes a processor (336) for controlling the MRI system. The execution of the instructions by the processor causes it to: measure (100, 200) a set of radio-frequency properties (352) of the radio-frequency antenna, calculate (102, 202) a matching network command (354) using the set of radio-frequency properties and a radio frequency model (366), and adjust (104, 204) the impedance matching network by sending the matching network command to the impedance matching network, thereby enabling automatic remote impedance matching.
An OLN lighting requirements generation system and method including a lighting requirements generation system for an outdoor lighting network (OLN, 90) having lighting units (82), the system having a central control apparatus (40); a plurality of lighting unit control apparatus (50); and a communication system (60) operably connecting the central control apparatus (40) and the lighting unit control apparatus (50). The central control apparatus (40) is operable to: acquire location-based data; define clusters from the location-based data; define lighting requirements for each of the clusters; associate the lighting units (82) to the clusters from location information for the lighting units; map the lighting units (82) to the lighting requirements; and implement the lighting requirements of the clusters associated with each of the lighting units (82).
A method includes planning a follow up three dimensional image acquisition of tissue of interest of a patient based on first and second two dimensional surview projection images, wherein the first two dimensional surview projection image was used to plan a previously performed baseline three dimensional image acquisition of the tissue of interest of the patient, wherein the first two dimensional surview projection image includes information corresponding to at least one region of interest identified in the first two dimensional surview projection image for the previously performed baseline three dimensional image acquisition, wherein the first two dimensional surview projection image includes information corresponding to a z-axis scanning extent identified in the first two dimensional surview projection image for the previously performed baseline three dimensional baseline image acquisition, and wherein the second two dimensional surview projection image was acquired for planning the follow up three dimensional image acquisition.
An optical device (102) configured for concentrating light towards a target element (104) is provided. The optical device (102) comprises a waveguide element (106) configured for guiding light towards the target element (104), and a wavelength conversion element (108) configured for converting incoming light of a first wavelength into outgoing light of a second wavelength. The wavelength conversion element (108) extends adjacent to the waveguide element (106). An interface (114) between the waveguide element (106) and the wavelength conversion element (108) comprises a surface roughness. The latter may provide for an increased efficiency and low manufacturing costs of the optical device (102).
H01L 31/055 - Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means where light is absorbed and re-emitted at a different wavelength by the optical element directly associated or integrated with the PV cell, e.g. by using luminescent material, fluorescent concentrators or up-conversion arrangements
H01L 31/052 - Cooling means directly associated or integrated with the PV cell, e.g. integrated Peltier elements for active cooling or heat sinks directly associated with the PV cells
17.
MRI WITH SEPARATION OF DIFFERENT CHEMICAL SPECIES USING A SPECTRAL MODEL
The invention relates to a method of MR imaging of at least two chemical species having different MR spectra. The method comprises the steps of: generating MR signals of the chemical species by subjecting a portion of a body (10) to an imaging sequence of RF pulses and switched magnetic field gradients, which imaging sequence is determined by a set of imaging parameters (TR, α, TE); acquiring the MR signals; determining a spectral model of at least one of the chemical species, which spectral model is associated with the set of imaging parameters (TR, α, TE); separating signal contributions of the at least two chemical species to the acquired MR signals on the basis of the spectral model; and computing a MR image from the signal contributions of one of the chemical species. Moreover, the invention related to a MR device (1) and to a computer program for a MR device (1).
The invention provides a a luminescent material comprising particles of UV- luminescent material having a coating, wherein the coating (a " multi-layer coating") comprises a first coating layer and a second coating layer, wherein the first coating layer is between the luminescent material and the second coating layer, and wherein in a specific embodiment the second coating layer comprises an alkaline earth oxide, especially MgO. Further, the invention provides a lighting unit comprising such luminescent material.
The present invention relates to the generation of multiple energy X-ray radiation. In order to provide multiple energy X-ray radiation with increased switching frequencies, a rotating anode (10) for an X-ray tube is provided with an anode body (12), a circular focal track (14), and an axis of rotation (16). The focal track is provided on the anode body and comprises at least one first focal track portion (18) and at least one second focal track portion (20). Transition portions (22) are provided between the at least one first and second focal track portions. The at least one first focal track portion is inclined towards an X- ray radiation projection direction (24) of the X-ray tube. The at least one second focal track portion is divided in a direction (26) transverse to the radial direction and comprises a primary sub-portion (28), which is inclined towards the X-ray radiation projection direction, and a secondary sub-portion (30), which faces less towards the X-ray radiation projection direction than the primary sub-portion. The transition portions are provided such that a direction of X- ray radiation generated at the surface of the transition portions is different than the X-ray radiation projection direction.
A needle is proposed including a cannula or hollow shaft with a multilumen insert inside. The insert comprises at least two lumen. Both the insert as well as the cannula have bevelled ends. In the insert substantially straight cleaved fibers are present that may be connected at the proximal end to a console. At least one of the distal fiber ends in the insert may protrude more than half the fiber diameter out of the insert. Furthermore, the bevel angle of the insert is different from the bevel angle of the cannula such that combination cannula and insert is such that the fiber ends do not protrude the bevel surface of the cannula.
A medical apparatus includes a magnetic resonance imaging system for acquiring magnetic resonance data from an imaging volume, a processor for controlling the medical apparatus, and a memory containing machine executable instructions and a pulse sequence. The magnetic resonance data acquired using the pulse sequence comprises free induction decay data and multiple gradient echo data. Execution of the instructions causes the processor to acquire the magnetic resonance data using the magnetic resonance imaging system in accordance with the pulse sequence, and reconstruct an in-phase image, a fat- saturated image, a water-saturated image, and an ultra-short echo time image from the magnetic resonance data, wherein the ultra-short echo time image comprises bone image data.
G01R 33/561 - Image enhancement or correction, e.g. subtraction or averaging techniques by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
G01R 33/56 - Image enhancement or correction, e.g. subtraction or averaging techniques
A61B 6/00 - Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
A61B 6/04 - Positioning of patients; Tiltable beds or the like
The present invention relates to signal and power supply transmission for an X-ray source. In order to provided an improved signal and power supply transmission with reduced constructional complexity and enhanced operation possibilities, an integrated signal and power supply transmission arrangement is provided, comprising a supply board (12), a main board (14), an insulating plate (16), at least one transformer arrangement (18), and at least one signal transmission arrangement (20). The insulating plate is provided between the supply and the main board. The transformer arrangement is provided to supply electric energy to the driving circuit of a transistor, which in turn feeds an X-ray source. The transformer arrangement comprises a primary electric conductor arranged on the supply board to cause electromagnetic induction in a secondary electric conductor arranged on the main board. The signal transmission arrangement is adapted to transmit a signal between the supply board and the main board; wherein the signal transmission arrangement comprises at least a first optical signal transmission device provided on the supply board, and a second optical signal transmission device (30) provided on the main board. The insulating plate is light-transmissive at least in the part between the first and second optical signal transmission device. The first and the second optical signal transmission devices are arranged in an optical connection path.
A system for displaying a plurality of registered images is disclosed. A first viewport unit (1) displays a representation of a first image dataset (4) in a first viewport (201). A second viewport unit (2) displays a representation of a second image dataset (5) in a second viewport (202). A position indication unit (7) enables a user to indicate a position in the first dataset (4) displayed in the first viewport (201), to obtain a user-indicated position. A corresponding position determining unit (8) determines a position in the second image dataset (5) corresponding to the user-indicated position, to obtain a corresponding position in the second image dataset (5), based on correspondence information (9) mapping positions in the first image dataset (4) to corresponding positions in the second image dataset (5). The second viewport unit (2) displays an indication of the corresponding position in the second viewport (202).
The invention relates to an imaging apparatus (31) for imaging an object. A reconstruction unit (12) determines component projection data values, which correspond to, for example, a base material of the object, and reconstructs an image of the object based on the determined component projection data values. A component projection data value, which corresponds to a ray, is determined as a combination of weighted base functions, which depend on energy projection data values of the same ray and the orientation of the same ray. This allows considering a possible dependency of the corresponding decomposition on the orientation of the ray, thereby allowing the imaging apparatus to improve the quality of decomposing the provided energy projection data values into the component projection data values and thus of a finally reconstructed image of the object, which is reconstructed based on the component projection data values.
G01N 23/04 - Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups , or by transmitting the radiation through the material and forming images of the material
A system (200) includes a first imaging system (201) that utilizes first radiation to image an interior region of interest of a subject, including a first agent in the region of interest and a second imaging system (218) that utilizes second radiation to image a second agent in the region of interest, wherein an output of the second imaging system is used to trigger the first imaging system to scan the region of interest, including the first agent in the region of interest.
A system (100) for processing a medical image (102), the system being arranged for establishing a region of interest 104 in the medical image, and the system comprising segmentation means (120) for applying a plurality of different segmentation methods (124) to the region of interest for obtaining an associated plurality of segmentation results (122), visualization means (140) for simultaneously displaying the plurality of segmentation results to a user, and a user input (160) for receiving from the user a selection command (162) indicative of a selection of one of the plurality of segmentation results for establishing an associated one of the plurality of different segmentation methods as a selected segmentation method (164).
The invention relates to an image display apparatus for displaying an image like a three-dimensional medical image of an object. A template providing unit (3) provides a template defining display parameters for displaying the image based on anatomical features of the object, and an anatomical feature detecting unit (4) detects an anatomical feature in the image. A display parameter determining unit (5) determines a display parameter defining, for example, a desired view, based on the detected anatomical feature and the template, and a display unit (8) displays the image by displaying, for example, the desired view, in accordance with the determined display parameter. This allows the image display apparatus to show the image on the display in a desired usual way as defined by the template, even if in the originally provided image the object is shown in an unusual way.
A guide wire (400, 500, 600, 700, 800, 900, 1000, 1200, 1300) is adapted for use in magnetic resonance imaging systems. The guide wire has a shaft region (402) and a distal tip region (404). The shaft region comprises a composite shaft (406) comprising reinforcing fibers aligned with a length extension (403) of the shaft region. The fibers extend at least partially into the distal tip region. The fibers form a taper (410) within the distal tip region. The distal tip region comprises a sensor (504, 604, 702, 704, 804, 904, 1006, 1008). The shaft comprises a cable (502, 602, 702, 704, 802, 902, 1002, 1004). The cable is connected to the sensor.
The invention relates to a respiratory motion determination apparatus for determining respiratory motion of a living being (3). A raw data providing unit (2) provides raw data assigned to different times, wherein the raw data are indicative of a structure like the apex of the heart muscle, which is influenced by cardiac motion and by respiratory motion, and a reconstruction unit (6) reconstructs intermediate images of the structure from the provided raw data. A structure detection unit (7) detects the structure in the reconstructed intermediate images, and a respiratory motion determination unit (10) determines the respiratory motion of the living being based on the structure detected in the reconstructed intermediate images. This allows determining respiratory motion with high accuracy, without relying on, for example, a stable correlation between a tracking signal of an external respiratory gating device and respiratory phases.
The present invention relates to a driver device (50a-50f) and a corresponding method for driving a load (22), in particular an LED unit comprising one or more LEDs (23). The proposed driver device comprises power input terminals (51, 52) for receiving a rectified supply voltage (vr) from an external power supply, power output terminals (53, 54) for providing a drive voltage and/or current for driving a load (22), a half bridge unit (70) comprising a first (60) and second (61) switching element coupled in series between a high voltage node (57) and a low voltage node (58) and having a switch node (59) between said first and second switching elements, a buck-boost input filter unit (71) comprising a first inductor (Lm) and a series diode (Dm) coupled between a power input terminal (51, 52) and said half bridge unit (70), a buck output filter unit (72) comprising a second inductor (Lo, Lc) coupled between said half bridge unit (70) and a power output terminal (53, 54), an energy storage unit (73), and a control unit (64) for controlling said switching elements (60, 61).
H02M 3/158 - Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
H05B 33/08 - Circuit arrangements for operating electroluminescent light sources
31.
SINGLE SWITCH DRIVER DEVICE HAVING LC FILTER, FOR DRIVING A LOAD, IN PARTICULAR AN LED UNIT
The present invention relates to a driver device (50a-50f) and a corresponding method for driving a load (22), in particular an LED unit comprising one or more LEDs (23). The proposed driver device comprises power input terminals (51, 52) for receiving a rectified supply voltage from an external power supply, power output terminals (53, 54) for providing a drive voltage and/or current for driving a load (22), a single stage power conversion unit (66a, 66b, 66c) coupled to the power input terminals (52) comprising a single switching element (60) and an energy storage element (Ch), both coupled to a switch node (55), wherein the power output terminals (53, 54) are represented by the output of said stage power conversion unit, a filter unit (68) coupled to said switch node (55), said filter unit comprising a filter inductor (Lc) and a filter capacitor (Cs), and a control unit (58) for controlling said switching element (60).
A hybrid imaging system including a first imaging system configured to acquire low resolution anatomical data of a first field of view of an anatomical structure. A second imaging system is configured to acquire functional data of the first field of view of the anatomical structure. A reconstruction processor is configured to reconstruct the functional data based on attenuation data into an attenuation corrected image. In response to the attenuation corrected image showing regions of interest, with the first imaging system or another imaging system acquiring high resolution data of one or more portions of the first field of view containing the regions of interest. The reconstruction processor reconstructs the high resolution anatomical data into one or more high resolution images of the regions of interest.
The present invention relates to filtering of X-ray radiation generated at multiple focal spots. For the generation of multiple-energy X-ray radiation, an X-ray tube (10) for generating multiple-energy X-ray radiation is provided that comprises an anode (12) and a filter unit (14). The anode comprises at least a first (16) and a second focal spot position (18), which are offset from each other in an offset direction (20) transverse to an X-ray radiation projection direction. The filter unit comprises a first plurality (22) of first portions (24) with first filtering characteristics for X-ray radiation and a second plurality (26) of second portions (28) with second filtering characteristics for X-ray radiation, wherein the filter unit is a directional filter adapted in a such a way that at least a first part of a first X-ray beam (30) emanating from the first focal spot position at least partly passes through the filter unit via the first portions, and at least a second part of a second X-ray beam (32) emanating from the second focal spot position passes the second portions when passing through the filter unit. The second part of the second X-ray beam is larger than the first part of the first X-ray beam. A portion of the parts of the first X-ray beam, which pass through the filter unit via the first portions, and a portion of the second X-ray beam, which passes the second portions when passing through the filter unit, pass through a common area of the filter unit.
G21K 1/04 - Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators using variable diaphragms, shutters, choppers
The present invention relates to a driver device (50a-50j) and a corresponding driving method for driving a load (22), in particular an LED unit, said driver device comprising power input terminals (51, 52) for receiving a rectified supply voltage from an external power supply, power output terminals (53, 54) for providing a drive voltage and/or current for driving a load (22), a half-bridge unit (70) comprising a first (60) and a second (61) switching element coupled in series between a high-voltage node (57) and a low- voltage node (58) and having a switch node (59) between said first and said second switching element, -a boost input filter unit (71) comprising a first inductor (L1) coupled between said power input terminals (51, 52) and said half-bridge unit (70), -a buck output filter unit (72) comprising a second inductor (L2) coupled between said half-bridge unit (70) and a power output terminal (53, 54), -an energy storage unit (73) and a control unit (64) for controlling said switching elements (60, 61).
H02M 3/158 - Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
H05B 33/08 - Circuit arrangements for operating electroluminescent light sources
A sequencer device generates basic nucleotide sequence data 30 comprising probe data 34 of a capture probe in the sequencer device 10 and a determined sequence of identifiers 32 of a fragment of nucleic acids captured by the probe. The sequencer device outputs enriched nucleotide sequence data 36 that is enriched with data comprising a reference to a sequence 38 that is expected for the fragment of nucleic acids.
G06F 19/22 - for sequence comparison involving nucleotides or amino acids, e.g. homology search, motif or Single-Nucleotide Polymorphism [SNP] discovery or sequence alignment
G06F 19/20 - for hybridisation or gene expression, e.g. microarrays, sequencing by hybridisation, normalisation, profiling, noise correction models, expression ratio estimation, probe design or probe optimisation
C12Q 1/68 - Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
The invention describes a diode lighting arrangement(1A,1B,1C) comprising a light-emitting diode arrangement (1,2) comprising at least two exposed serially connected light-emitting diodes (1) connected in parallel with an electrostatic discharge protection diode arrangement (2); and an electrostatic discharge diverting arrangement (4,50) extending in physical proximity to an interconnect (10) between adjacent light-emitting diodes (1), which diverting arrangement (4,50) is realised to divert electrostatic discharge (S2) from the interconnect (10) to a region of low potential (21,22, GND). The invention further describes an automotive lighting assembly (3A,3B) comprising such a diode lighting arrangement (1A,1B,1C). The invention also describes a method of manufacturing a diode lighting arrangement (1A,1B,1C) which method comprises the steps of serially connecting a light-emitting diode arrangement (1,2) comprising at least two exposed serially connected light-emitting diodes (1) in parallel with an electrostatic discharge protection diode arrangement (2); and arranging an electrostatic discharge diverting arrangement (4,50,60) to extend in physical proximity to at least one interconnect (10) between adjacent light-emitting diodes (1), which diverting arrangement (4,50) is realised to divert electrostatic discharge (S2) from the interconnect (10) to a region of low potential (21,22, GND).
H01L 25/16 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices the devices being of types provided for in two or more different main groups of groups , or in a single subclass of , , e.g. forming hybrid circuits
H01L 27/02 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
H05B 33/08 - Circuit arrangements for operating electroluminescent light sources
A medical imaging system comprises an image data acquisition module to acquire imaging data and a motion detection module to acquire motion information. A reconstruction module reconstructs image datasets from the imaging data and with use of the motion information to correct for motion. The motion detection module is provided with a shape-sensing photonic fibre system to provide a photonic output representative of the spatial shape of the photonic fibre and an arithmetic unit to compute the motion information on the basis of the photonic output.
A61B 5/055 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
A61B 5/107 - Measuring physical dimensions, e.g. size of the entire body or parts thereof
A61B 5/113 - Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb occurring during breathing
G01R 33/565 - Correction of image distortions, e.g. due to magnetic field inhomogeneities
38.
CORRECTING THE STATIC MAGNETIC FIELD OF AN MRI RADIOTHERAPY APPARATUS
A method of correcting a magnetic field of an MRI radiotherapy apparatus (300) comprising a magnetic resonance imaging system (302) and a radiation therapy system (304). The MRI system includes a magnet (306) for generating the magnetic field within an imaging zone 318. The magnet generates a magnetic field with a zero crossing (346, 404) outside of the imaging zone. The medical apparatus further comprises a gantry (332) configured for rotating a ferromagnetic component (336, 510) about a rotational axis (333). The method comprises the step of installing (100, 200) a magnetic correcting element (348, 900, 1000) located on a radial path (344, 504) perpendicular to the rotational axis. The magnetic correcting element is positioned on the radial path such that change in the magnetic field within the imaging zone due to the ferromagnetic component is reduced. The method further comprises repeatedly: measuring (102, 202, 1204) the magnetic field within the imaging zone; determining (104, 204, 1206) the change in the magnetic field in the imaging zone; and adjusting (106, 206, 1208) the position of the magnetic correcting element along the radial path if the change in the magnetic field is above a predetermined threshold.
A sensor device (340) for determining a flow characteristic of an object (341) being movable in an element (342) comprises a light emitting unit (344) configured for emitting light towards the element (342) and a light detecting unit (344) configured for detecting light scattered back from the element (342). The sensor device (340) comprises an optical unit (346) configured for spatially separating a light incidence element portion (348) of the element (342) and a light detection element portion (350) of the element (342) from one another, wherein the light incidence element portion (348) is associated with the emitted light inciding on the element (342) and the light detection element portion (350) is associated with the back-scattered light scattered back from the element (342) for detection. The sensor device (340) comprises a determining unit (358) configured for determining the flow characteristic of the object (341) being movable in the element (342) based on light indicative of the emitted light and the detected back-scattered light. The sensor device (340) allows for an accurate and easy determination of the flow characteristic of the object (341).
A61B 3/12 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
G01P 5/26 - Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting optical wave
G01P 3/36 - Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
40.
FABRICATION APPARATUS FOR FABRICATING A PATTERNED LAYER
The invention relates to a fabrication apparatus for fabricating a patterned layer (18) on a substrate (14). Protective material (17) is applied in second regions on the substrate (14) and liquid layer material (18) is then printed in first regions being different to the second regions on the substrate (14). The layer material (18) is dried by heating the layer material (18) to a drying temperature being smaller than a melting temperature of the protective material (17), before removing the protective material (17) from the substrate (14) by using a removing temperature being larger than the melting temperature of the protective material (17). A patterned layer (18) can therefore be produced, without using, for example, a costly photolithography process, and because of the use of the protective material (17) the layer material (18) is present in the desired first regions only and not in the second regions. This improves the quality of the patterned layer, which may be used for producing an OLED.
H01L 51/56 - Processes or apparatus specially adapted for the manufacture or treatment of such devices or of parts thereof
H01L 51/00 - Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
41.
FABRICATION APPARATUS FOR FABRICATING A LAYER STRUCTURE
The invention relates to a fabrication apparatus for fabricating a layer structure comprising at least a patterned first layer on a substrate. A layer structure (6) with an unpatterned first layer is provided on the substrate. A protective material application unit (8) applies protective material at least on parts of the provided layer structure for protecting at least the parts of the provided layer structure (6), an ablation unit (12) ablates the unpatterned first layer through the protective material such that the patterned first layer is generated, and the protective material removing unit (15) removes the protective material (9). This allows fabricating a layer structure for, for example, an OLED without necessarily using a technically complex and costly photolithography process. Moreover, ablation debris can be removed with removing the protective material, thereby reducing the probability of unwanted effects like unwanted shortcuts in the OLED caused by unwanted debris.
H01L 51/56 - Processes or apparatus specially adapted for the manufacture or treatment of such devices or of parts thereof
H01L 51/00 - Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
42.
APPARATUS AND METHOD FOR GENERATING AN ATTENUATION CORRECTION MAP
The invention relates to an apparatus for generating an attenuation correction map. An image providing unit (5, 6) provides an image of an object comprising different element classes and a segmentation unit (11) applies a segmentation to the image for generating a segmented image comprising image regions corresponding to the element classes. The segmentation is based on at least one of a watershed segmentation and a body contour segmentation based on a contiguous skin and fat layers in the image. A feature determination unit (12) determines features of at least one of a) the image regions and b) boundaries between the image regions depending on image values of the image and an assigning unit (13) assigns attenuation values to the image regions based on the determined features for generating the attenuation correction map. The performed image processing steps can allow for producing a high quality attenuation correction map, even if the initial image does not comprise image values related to the attenuation of radiation like a CT image.
A system for generating a slicing scheme for slicing a specimen is disclosed. A parameter unit (1) is arranged for determining at least one parameter of a lesion in a specimen, based on an image dataset (14) representing at least part of the specimen. A slicing scheme unit (2) is arranged for determining a slicing scheme (15) for pathologic examination of the specimen, based on the at least one parameter. A specimen preparation unit (3) is arranged for determining a slicing preparation protocol, based on the image dataset, wherein the slicing preparation protocol comprises a representation of preparation steps relating to the specimen. A segmentation unit (5) is arranged for segmenting the lesion in the image dataset (14), wherein the parameter unit (1) is arranged for determining the at least one parameter, based on the segmented lesion.
G01N 1/06 - Devices for withdrawing samples in the solid state, e.g. by cutting providing a thin slice, e.g. microtome
A61B 10/00 - Other methods or instruments for diagnosis, e.g. for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
G06F 9/30 - Arrangements for executing machine instructions, e.g. instruction decode
44.
PERSONALIZED RF COIL ARRAY FOR MR IMAGING GUIDED INTERVENTIONS
The invention relates to a method of manufacturing a personalized RF coil array for MR imaging guided interventions. The method comprises the steps of: -acquiring diagnostic image data reflecting the anatomy of a portion of a patient's body (10); -planning an intervention on the basis of the diagnostic image data, wherein a field of the intervention within the patient's body (10) portion is determined; -arranging one or more RF antennae (11, 12, 13) on a substrate (19), which is adapted to the patient's anatomy, in such a manner that the signal-to-noise ratio of MR signal acquisition via the one or more RF antennae (11, 12, 13) from the field of the intervention is optimized. Moreover, the invention relates to a computer program and to a computer workstation.
A light generating device (1) is provided with at least a voltage input (21) adapted for receiving a variable voltage, at least three LED circuits (10), coupled with said voltage input (21), wherein each LED circuit (10) comprises a LED unit (14) and controllable current regulator (15) to control the current through said LED circuit (10). The light generating device (1) further comprises a controllable switch matrix (30) comprising a plurality of switches (25, 26, 27), said switch matrix (30) is configured to operate in at least three different switching modes and a controller (50), connected at least with said switch matrix (30), configured to determine said variable operating voltage and to control the switching mode of said switch matrix (30) in dependence of the determined operating voltage. To provide an efficient operation of such device (1) with a variable operating voltage, such as an AC voltage, in a first switching mode, said LED units (10) are connected parallel to each other, in a second switching mode, at least two of said LED units (10) are connected in series and in a third switching mode, said LED units 10 are connected in series with each other.
A method includes performing a motion compensated reconstruction of functional projection data using a patient-adapted motion model, which is generated based on a generic anatomical motion model and imaging data from a structural scan. A system includes a first adapter (202) configured to adapt a generic anatomical model to structural image data, producing an adapted model, a forward projector (204) configured to forward project the adapted model, producing forward projected data, and a second adapter (206) configured to adapt the forward projected data to individual projections of projected data, which is used to generate the structural image data, producing a patient-adapted motion model.
A method, system, and program product are provided for user-steered, on-the fly path planning in an image-guided endoscopic procedure, comprising: presenting, on a display, a 2D sectional image showing a region of interest from a preoperative CT scan; defining a control point on the 2D sectional image within a patient's body lumen responsive to a first user input; centering the control point; adjusting a viewing angle about the control point to show a longitudinal section of the body lumen responsive to a second user input; identifying a second point on a planned path within the body lumen responsive to a third user input; extending a planned path connecting the control point and the second point; redefining the second point as a new control point; and repeating the presenting adjusting, identifying, extending, and the redefining steps until the planned path reaches a procedure starting point within the patient's body.
G06T 19/00 - Manipulating 3D models or images for computer graphics
A61B 1/267 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the respiratory tract, e.g. laryngoscopes, bronchoscopes
When employing specular reflective material in a scintillator crystal array, light trapping in the crystal due to repetitive internal reflection is mitigated by roughening at least one side(16) of each of a plurality of pre-formed polished scintillator crystals. A specular reflector mate¬ rial (30) is applied (deposited, wrapped around, etc.) to the roughened crystals, which are arranged in an array. Each crystal array is coupled to a silicon photodetector (32) to form a detector array, which can be mounted in a detector for a functional scanner or the like.
The present invention relates to breast cancer screening. In order to improve the detection rate in breast cancer screening and to enhance cancer risk assessment, according to the present invention, first image data (202) of a breast of a patient is provided (201); and second image data (204) of a breast of the patient. The first image data and the second image data are registered (205) and non-congruency (207) between the breast of the first image data and the breast of the second image data is determined (206). The non-congruency information (209) is provided (208) to the user. For example, the first and second image data are 3D image data sets. According to an example, the non-congruency information is provided as multivariate non-congruency information indicating at least two measured non-congruency parameters. According to a further example, the non-congruency is determined based on parameters related to the breast tissue as well as breast tissue unrelated parameters.
G06F 19/00 - Digital computing or data processing equipment or methods, specially adapted for specific applications (specially adapted for specific functions G06F 17/00;data processing systems or methods specially adapted for administrative, commercial, financial, managerial, supervisory or forecasting purposes G06Q;healthcare informatics G16H)
50.
DIGITALLY CONTROLLED HIGH SPEED HIGH VOLTAGE GATE DRIVER CIRCUIT
The present invention relates to semiconductor technology. In particular, the present invention relates to high-speed, high voltage switching for a high voltage generator for an X-ray system. Switching elements, e.g. IGBTs or MOS-FETs, are employed for high-speed high voltage switching. However, circuit elements or parasitic elements at an input of the switching element limit the switching speed of the switching element. The present invention proposes applying a higher than allowed voltage to the input of the switching element, e.g. a voltage higher than the maximum allowed gate voltage of an IGBT or MOS-FET, to increase switching speed. A feedback loop is provided for save operation. thus, a switching circuit (20) for high speed switching is provided, comprising an amplifier circuit (22), comprising an output (8a) being adapted to be connectable to an input (8b) of a switching arrangement (2), wherein the voltage provided by the output (8a) exceeds a maximum gate voltage, wherein the amplifier circuit (22) is controllable so that a current internal gate voltage does not to exceed the maximum internal gate voltage.
A discharge lamp comprises a discharge vessel 20 defining a sealed inner discharge space 22 with two electrodes 24. A filling consists of a rare gas and a metal halide composition and is free of mercury. The discharge vessel 20 comprises outer grooves 36 where the electrodes 24 are embedded, arranged at a groove distance Ra between them. The discharge vessel 20 further comprises an inner diameter ID. In operation of the lamp, an arc discharge is formed between the electrodes and the metal halide composition is partly evaporated. After operation of the lamp, the metal halide composition forms a film on the inner wall of the discharge vessel 20. This film has a surface area AS measured in mm2. The metal halide composition is provided in such an amount within the discharge space 22, that a matching quotient Q, calculated as Q = Ra x ID/As has a value of 2 or more, such that a high colour temperature is achieved.
The present invention relates to a method of generating oxygen. The method addresses the objects of reducing the servicing work and improving the purity of the generated oxygen. According to the invention, the method comprises the steps of: providing an oxygen comprising gas at a primary side of a dense voltage drivable membrane (12); applying a voltage between a conductive element at the primary side of the membrane (12) and a conductive element at a secondary side of the membrane (12), the conductive elements being electrically connected to the membrane (12), wherein a plasma (18, 20) is generated at at least one of the primary side and the secondary side of the membrane (12), the plasma (18, 20) being used as conductive element.
B01D 53/22 - Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by diffusion
B01D 53/32 - Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by electrical effects other than those provided for in group
A61M 16/10 - Preparation of respiratory gases or vapours
The invention relates to an energy application apparatus for applying energy to an object, wherein the object (2) comprises a location (3) with radioactive material and wherein the energy application apparatus (1) comprises a location detection unit being usable for detecting the location with the radioactive material, and an x-ray unit for applying x-rays to the detected location of the object. Since the location, to which energy should be applied, comprises radioactive material, this location can be accurately detected by using the location detection unit. Moreover, since the application of the x-rays can be well controlled by controlling, for example, the intensity and the energy spectrum of the x-rays, energy can be accurately applied to the accurately detected location. The overall process of applying energy to the object can therefore be performed with increased accuracy.
A radiological imaging apparatus (10) acquires a radiological brain image of a subject after administration of a radio tracer binding to a target substance indicative of a clinical pathology. In one embodiment, the clinical pathology is amyloid deposits in the brain at a level correlative with Alzheimer's disease and the target substance is amyloid deposits. A processor (C) tests for the clinical pathology by: performing non-rigid registration of the brain image with a positive template (32P) indicative of having the clinical pathology and with a negative template (32N) indicative of not having the clinical pathology; generating positive and negative result metrics (36P, 36N) quantifying closeness of the registration with the positive and negative template respectively; and generating a test result (54) based on the positive result metric and the negative result metric. An independent test result is generated by quantifying a second mode of an intensity histogram for the brain image.
A lighting device and a lighting unit comprising a reflector (52) and a lighting device, or LED lamp (10) are described. The LED lamp have a first and a second LED assembly (30, 32). Each LED assembly (30, 32) comprises at least one LED element (34a, 34b, 34c; 36a, 36b, 36c) with an LED chip (40) and a carrier (38) with a fiat surface for carrying the LED chip (40). The LED chip (40) emits light with a main optical direction. The first and second LED assembly (30, 32) are mounted relative to each other so that at least a first LED element (34a) from the first LED assembly (30) and a second LED element (36a) from the second LED assembly (32) enclose a rotating angle (γ) between their respective flat surfaces with respect to an axis of rotation (A), so as to involve light angle between the first and second main optical directions. The axis of rotation (A) is parallel to a plane of a flat carrier surface of at least one LED element (36a). The first and second LED assemblies (30, 32) are arranged offset from each other parallel to the axis of rotation (A). Thus, a lighting device with small dimensions and advantageous light distribution is obtained.
The invention relates to a method of MR imaging of a moving portion of a body ( 10 ), the method comprising the steps of: detecting a motion signal (MS) from the body ( 10 ) while continuously subjecting the portion of the body ( 10 ) to one or more preparation RF pulses; subjecting the portion of the body ( 10 ) to an imaging sequence comprising at least one excitation RF pulse and switched magnetic field gradients, wherein the imaging sequence is triggered by the detected motion signal (MS); acquiring MR signals from the portion of the body ( 10 ); and reconstructing a MR image from the acquired MR signals.
The present invention relates to a bidirectional semiconductor switch (M1, M2) with extremely low control power consumption and a bootstrap circuit which allows reliable start of operation of the switch and the hosting device after unlimited duration of mains interruptions. Intelligent control options are provided by operating from a small energy storage and no extra means are required to recover from a depleted energy storage condition. The absence of audible noise and mechanical wear also enables more frequent recharging cycles and allows smaller and thus cheaper energy storage components.
H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors
H03K 17/691 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors with galvanic isolation between the control circuit and the output circuit using transformer coupling
The invention relates to means for determining the spatial configuration of a biological body (P) on a surface, particularly on the surface of a patient support (150). One embodiment of these means is a sensor system (110) that can be applied to a patient support (150) and that comprises a plurality of sensor units (111), wherein each of these sensor units (111) has an adjacent sensitive zone (112) in which the presence of a biological body (P) induces a detection signal. The sensor unit may particularly comprise a microwave coil (111).
A61B 5/055 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
A61B 6/04 - Positioning of patients; Tiltable beds or the like
A61B 5/05 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
A61B 5/11 - Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb
Magnetic resonance (MR) spins are inverted by applying an inversion recovery (IR) radio frequency pulse (50). MR signals are acquired at an inversion time (TI) after the IR radio frequency pulse. TI is selected such that a first tissue of interest (e.g., blood) exhibits negative magnetism excited by the IR radio frequency pulse and a second tissue (e.g., intraplaque hemorrhage tissue) exhibits positive magnetism excited by the IR radio frequency pulse. The acquired magnetic resonance signals are reconstructed to generate spatial pixels or voxels wherein positive pixel or voxel values indicate spatial locations of positive magnetism and negative pixel or voxel values indicates spatial locations of negative magnetism. A first image (28) representative of the first tissue is generated from spatial pixels or voxels having negative signal intensities, and a second image (26) representative of the second tissue is generated from spatial pixels or voxels having positive signal intensities.
An RF volume resonator systemis disclosed comprising a multi-port RF volume resonator (40, 50; 60), like e.g. a TEM volume coil or TEM resonator, or a birdcage coil, all of those especially in the form of a local coil like a head coil, or a whole body coil, and a plurality of transmit and/or receive channels (T/RCh1,…T/RCh8) for operating the multi-port RF volume resonator for transmitting RF excitation signals and/or for receiving MR relaxation signals into/from an examination object or a part thereof. By the individual selection of each port (P1,..P8) andthe appropriate amplitude and/or frequency and/or phase and/or pulse shapes of the RF transmit signals according to the physical properties of an examination object, a resonant RF mode within the examination object with an improved homogeneitycan beexcited bythe RF resonator.
G01R 33/3415 - Constructional details, e.g. resonators comprising surface coils comprising arrays of sub-coils
G01R 33/561 - Image enhancement or correction, e.g. subtraction or averaging techniques by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
G01R 33/36 - Electrical details, e.g. matching or coupling of the coil to the receiver
61.
CONTRAST ENHANCED MAGNETIC RESONANCE ANGIOGRAPHY WITH CHEMICAL SHIFT ENCODING FOR FAT SUPPRESSION
The invention relates to a method of performing contrast enhanced first pass magnetic resonance angiography, the method comprising: acquiring (302) magnetic resonance datasets of a region of interest using a single- or multi-echo data acquisition technique, wherein the echo times of the one or multiple echoes are flexible, wherein at the time of the data acquisition the region of interest comprises fat, water and a contrast agent, processing (304) the datasets using a generalized Dixon water-fat separation technique to eliminate the signal originating from the fat from the background for reconstruction of an image data set.
G01R 33/54 - Signal processing systems, e.g. using pulse sequences
G01R 33/561 - Image enhancement or correction, e.g. subtraction or averaging techniques by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
G01R 33/56 - Image enhancement or correction, e.g. subtraction or averaging techniques
G01R 33/563 - Image enhancement or correction, e.g. subtraction or averaging techniques of moving material, e.g. flow-contrast angiography
G01N 24/08 - Investigating or analysing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
The present invention relates to a power converter architecture and its operation principle that supplies an electric load with a controlled direct voltage from both a local direct current electricity source as well as an alternating current (AC)mains with maximum power conversion efficiency. For the case that the local electricity source can not provide enough electricity to the local load it is additionally supplied with electricity from the AC mains. In other case electricity is also feed into the AC grid when a local source can provide more electricity than needed to supply local loads.
The invention relates to a thermal treatment applicator (19) for the deposition of thermal energy within tissue of a body (10) of a patient. The applicator (19), comprises: a plurality of RF antennae (20) for radiating a RF electromagnetic field toward the body (10); - a plurality of RF power amplifiers (21) supplying RF signals to the RF antennae (20), wherein each RF power amplifier (21) comprises a transistor and an output matching network (22) transforming the output impedance of the transistor into a low impedance value. Moreover, the invention relates to a MR imaging guided therapy system (1).
A61B 18/18 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
A magnetic resonance imaging method includes acquisition of datasets of magnetic resonance data from an object. At least some of the datasets are undersampled in k-space. Each dataset relating to a motion state of the object. Images are reconstructed from each of the datasets by way of a compressed sensing reconstruction. Motion correction is applied to the reconstructed images relative to a selected motion state, so as to generate motion corrected images. A diagnostic image for the selected motion state is derived, e.g. by averaging from the motion corrected images.
G01R 33/561 - Image enhancement or correction, e.g. subtraction or averaging techniques by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
G01R 33/567 - Image enhancement or correction, e.g. subtraction or averaging techniques gated by physiological signals
G01R 33/565 - Correction of image distortions, e.g. due to magnetic field inhomogeneities
65.
BLACK BLOOD MRI USING A STIMULATED ECHO PULSE SEQUENCE WITH FLOW SENSITIZATION GRADIENTS
A black blood magnetic resonance imaging sequence is performed using a magnetic resonance scanner. The sequence includes: applying a first flow sensitization gradient; applying a spoiler gradient after applying the first flow sensitization gradient; applying a second flow sensitization gradient after applying the spoiler gradient wherein the second flow sensitization gradient has area equal to the first flow sensitization gradient but of opposite polarity; applying a slice-selective radio frequency excitation pulse after applying the spoiler gradient; and performing a magnetic resonance readout after applying the second flow sensitization gradient and after applying the slice selective radio frequency excitation. The readout acquires magnetic resonance imaging data having blood signal suppression in the region excited by the slice-selective radio frequency excitation pulse. The magnetic resonance imaging data is suitably reconstructed to generate a black blood image that may be displayed.
Interleaved black/bright imaging (IBBI) is performed using a magnetic resonance (MR) scanner (10) wherein the black blood module (52) of the IBBI includes: applying a first flow sensitization gradient; applying a spoiler gradient after applying the first flow sensitization gradient; applying a second flow sensitization gradient after applying the spoiler gradient wherein the second flow sensitization gradient has area equal to the first flow sensitation gradient but of opposite polarity; applying a slice selective radio frequency excitation pulse after applying the spoiler gradient; and performing a MR readout after applying the second flow sensitization gradient and after applying the slice selective radio frequency excitation wherein the readout acquires MR imaging data having blood signal suppression in the region excited by the slice selective radio frequency excitation pulse. The MR imaging data having blood signal suppression is reconstructed to generate black blood images (20), and MR imaging data generated by bright blood modules (50) of the IBBI is reconstructed to generate bright blood images (22).
In vapour deposition applications, especially OLED mass production, where it is necessary to measure and/or control the deposition rate of evaporation sources within specific tolerances, a measurement system is adapted to use robust and accurate optical thickness measurement methods at high and low rate sources, so that the thickness of a layer deposited on a substrate can be measured and controlled. A first evaporation source (11) deposits a layer of material on a substrate (20). A mobile element (41) is provided, On which a film is deposited from a second evaporation source (12b) in a deposition location (D1). Subsequently the mobile element is conveyed to a measurement location (D2) where the thickness of the film is measured by a thickness detector (45).The measurement apparatus is arranged to control the deposition of the first evaporation source in dependence on the thickness of the film deposited on the mobile element.
A method includes scanning a region of interest, during a contrast agent based perfusion scan, at a predetermined temporal sampling rate during contrast agent uptake in the region of interest, and generating time frame data indicative of the scanned region of interest. The method further includes identifying a predetermined change in an amount of the contrast agent in the region of interest from the time frame data. The method further includes scanning the region of interest at a lower temporal sampling rate, which is lower than the temporal sampling rate during the contrast agent uptake, in response to identifying the predetermined change in the amount of the contrast agent in the region of interest.
The present invention relates to a VCSEL which at least comprises on a substrate (1) a first and a second mirror stack (2, 3) forming a resonant cavity, an active region (4) sandwiched between said first and said second mirror stack (2, 3), and a current aperture layer (5) defining a current confinement aperture (6). The current confinement aperture (6) extends at least partly around a central electrically insulating area (7) of said current aperture layer (5). The proposed VCSEL avoids or at least reduces the risk of current crowding, lowers the thermal resistance and enables the generation of ring-shaped beam profiles in the far field. A central hole ( 9 ) may be etched in the second mirror stack (3) to allow for wet oxidation of the current aperture layer (5) from two sides resulting in an annular current confinement aperture (6).
H01S 5/183 - Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]
The invention relates to a method of MR imaging, wherein a portion of a body is subjected to an imaging sequence of RF pulses and switched magnetic field gradients, which imaging sequence is a stimulated echo sequence including an off-resonant Bloch- Siegert RF pulse (BS) radiated during a preparation period (21) of the stimulated echo sequence. A B1 map is derived from the acquired stimulated echo MR signals. Moreover, the invention relates to a method of MR imaging, wherein a portion of a body is subjected to a first imaging sequence, which comprises a first composite excitation RF pulse consisting of two RF pulse components having essentially equal flip angles and being out of phase by essentially 90°. Further, the portion of the body is subjected to a second imaging sequence, wherein a B1 map is derived from signal data acquired by means of the first and second imaging sequences.
G01R 33/24 - Arrangements or instruments for measuring magnetic variables involving magnetic resonance for measuring direction or magnitude of magnetic fields or magnetic flux
71.
MRI OF CHEMICAL SPECIES HAVING DIFFERENT RESONANCE FREQUENCIES USING AN ULTRA-SHORT ECHO TIME SEQUENCE
The invention relates to a method of MR imaging of chemical species having at least two different MR resonance frequencies, the method comprising the steps of: -generating MR signals at that at least two different resonance frequencies of the chemical species by subjecting a portion of a body (10) to an imaging sequence of RF pulses and switched magnetic field gradients, which imaging sequence is an ultra-short echo time sequence; - acquiring the MR signals; - reconstructing a MR image from the acquired MR signals. Moreover, the invention relates to a MR device and to a computer program to be run on a MR device.
G01N 24/08 - Investigating or analysing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
G01R 33/36 - Electrical details, e.g. matching or coupling of the coil to the receiver
G01R 33/483 - NMR imaging systems with selection of signal or spectra from particular regions of the volume, e.g. in vivo spectroscopy
G01R 33/54 - Signal processing systems, e.g. using pulse sequences
G01R 33/561 - Image enhancement or correction, e.g. subtraction or averaging techniques by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
G01R 33/56 - Image enhancement or correction, e.g. subtraction or averaging techniques
G01R 33/44 - Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
Image processing system 100 for enabling a user to navigate through image data having at least three spatial dimensions by displaying views 155 of the image data, the image processing system comprising an image device 110 comprising a display 130 for displaying the views of the image data and an orientation sensor 120 for measuring an orientation of the image device with respect to a reference orientation for providing rotation data 125 indicative of a device rotation of the image device, means 140 for establishing a center of rotation in the image data, and an image processor 150 for establishing the views of the image data in relation to the device rotation by, for establishing a current view, (i) receiving the rotation data from the orientation sensor, (ii) establishing a view rotation in relation to the device rotation, and (iii) establishing the current view in dependence on the view rotation around the center of rotation with respect to a reference view.
A medical apparatus (1100) comprising a magnetic resonance imaging system and an interventional device (300) comprising a shaft (302, 1014, 1120). The medical apparatus further comprises a toroidal magnetic resonance fiducial marker (306, 600, 800, 900, 1000, 1122) attached to the shaft. The shaft passes through a center point (610, 810, 908, 1006) of the fiducial marker. The medical apparatus further comprises machine executable instructions (1150, 1152, 1154, 1156, 1158) for execution by a processor. The instructions cause the processor to acquire (100, 200) magnetic resonance data, to reconstruct (102, 202) a magnetic resonance image (1142), and to receive (104, 204) the selection of a target volume (1118, 1144, 1168). The instructions further cause the processor to repeatedly: acquire (106, 206) magnetic resonance location data (1146) from the fiducial marker and render (108, 212) a view (1148, 1162) indicating the position of the shaft relative to the target zone..
G01R 33/28 - Arrangements or instruments for measuring magnetic variables involving magnetic resonance - Details of apparatus provided for in groups
A61B 5/055 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
74.
DRIVER DEVICE AND DRIVING METHOD FOR DRIVING A LOAD, IN PARTICULAR AN LED ASSEMBLY
Driver device (1) and a corresponding driving method for driving a load (100), in particular an LED assembly comprising two or more LEDs. The proposed driver device comprises supply terminals (10) for receiving a supply voltage (Vs), load terminals (20) for coupling a load to said driver device and for providing electrical energy to said load for driving said load, a storage unit (40) for storing electrical energy received at said supply terminals, a coupling unit (50) coupled between said supply terminals and said storage unit for controllably providing electrical energy from said supply terminals to said storage unit, a first switching unit (60) coupled between said supply terminals and said load for switchably providing electrical energy from said supply terminals to one or more of said load terminals, a second switching unit (70) coupled between said storage unit and said load for switchably providing electrical energy stored in said storage unit to one or more of said load terminals, and a control unit (80) for controlling said coupling unit and said first and second switching units.
A detector (22) detects an event. First and second time-to-digital converters(TDCs) (70, 72) generate first and second time stamps (TS1, TS2) for the detection of the event. The first TDC and the second TDC are both synchronized with a common clock signal (62) that defines a fixed time offset between the second TDC and the first TDC. An autocalibration circuit (120) adjusts the first TDC and the second TDC to keep the time difference between the second time stamp and the first time stamp equal to the fixed time offset between the second TDC and the first TDC. The detector may be a detector array, and trigger circuitry (28) propagates a trigger signal from a triggering detector of the array of detectors to the first and second TDC's. Skew correction circuitry (132, 134, 136, 142, 60, 162) adjusts a timestamp (TS) based on which detector is the triggering detector.
A method includes obtaining image data for a patient. The image data corresponds to acquisition data from an imaging acquisition from a set of planned image acquisitions in an examination plan for the patient. The method further includes analyzing the image data with a processor based on an imaging practice guideline and producing electronically formatted data indicative of the analysis. The processor generates a signal indicative of a recommendation of a change to the examination plan based on the data indicative of the analysis.
G06F 19/00 - Digital computing or data processing equipment or methods, specially adapted for specific applications (specially adapted for specific functions G06F 17/00;data processing systems or methods specially adapted for administrative, commercial, financial, managerial, supervisory or forecasting purposes G06Q;healthcare informatics G16H)
77.
DRIVING DEVICE AND METHOD FOR DRIVING A LOAD, IN PARTICULAR AN LED ASSEMBLY
Driver device and a corresponding driving method for driving a load, in particular an LED assembly comprising one or more LEDs. To provide a better performance, better cost-efficiency, improved power factor and reduced losses, a driver device (1,1', 2, 2') is provided comprising a rectifier unit (10) for rectifying a received AC supply voltage (Vs), load terminals (20) for providing a drive voltage (VL) and/or a drive current (IL) for driving said load, a capacitive storage unit (30) coupled between said rectifier unit and said load terminals for storing electrical energy provided by said rectifier unit and providing electrical energy to said load, and a bridge switching unit (40) coupled between said rectifier unit and said load for switching said capacitive storage unit into a load current path from said rectifier unit to said load terminals with a desired polarity and for switching said capacitive storage unit out of said load current path.
A device having a sensor detecting patient physiological data, a detection element detecting whether a medical professional is present in a patient's room and a display. If a medical professional is present in the patient's room, the display displays a first display mode, the first display mode including the patient physiological data. If a medical professional is not present in the patient's room, the display displays a second display mode, the second display mode being adapted for viewing by lay viewers.
G06F 19/00 - Digital computing or data processing equipment or methods, specially adapted for specific applications (specially adapted for specific functions G06F 17/00;data processing systems or methods specially adapted for administrative, commercial, financial, managerial, supervisory or forecasting purposes G06Q;healthcare informatics G16H)
An interface circuit is disclosed for operating a light source from an electronic fluorescent driver, which interface circuit is equipped with - input terminals (7a, 7b) for connection to lamp connection terminals of the electronic fluorescent lamp driver, - a first string (5a) interconnecting a first pair of input terminals (7a), - a second string (5b) interconnecting a second pair of input terminals (7b), - a third string (11, 9) interconnecting a first terminal (Tl) of the first string and a second terminal (T2) of the second string and comprising a rectifier (31), output terminals of said rectifier being coupled during operation to the light source. The interface circuit is further equipped with a first switching element (11) for controlling the conductive state of the third string and a fourth string coupled to the third string and comprising a sensor circuit (8), having an output terminal coupled to a control electrode of the first switching element, for sensing the amplitude of a high frequency AC voltage between the first and the second terminal and for rendering the first switching element conductive when the amplitude of the high frequency AC voltage reaches a predetermined value. When a light source is operated making use of the interface circuit, a proper emulation of a fluorescent lamp is obtained.
A screen for a lighting device and a method of manufacturing such a screen are provided. The screen is adapted to receive and transmit light from a light source. The screen comprises two at least partly transparent sheets opposing each other, and a structure(40) arranged between the two sheets. The structure provides a plurality of compartments (400) having sidewalls (430) extending from one of the sheets to the other sheet. Further, at least one of the compartments encapsulates fluid (440) and wavelength converting particles (450). The present invention is advantageous in that wavelength converting characteristics can be made regular across the screen while the screen can be arbitrary mounted in any orientation without the wavelength converting characteristics being affected by gravity.
F21V 9/00 - Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
F21V 9/12 - Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for reducing intensity of light with liquid-filled chambers
The invention describes a gas-discharge lamp (1) comprising a discharge vessel (11) arranged in an outer quartz glass envelope (12), which gas-discharge lamp (1) comprises a local thermal area contact (2) between a lower surface (21) of a localised deformation (20) of the outer envelope (12) and a corresponding isolated area (22) on the outer surface (23) of the discharge vessel (11). The invention also describes a method of manufacturing a gas-discharge lamp (1), which method comprises the steps of arranging a discharge vessel (11) in an outer quartz glass envelope (12); forming a localised deformation (20) of the outer envelope (12) to create a local thermal area contact (2) between a lower surface (21) of the localised deformation (20) and a corresponding isolated area (22) on the outer surface (23) of the discharge vessel (11).
The invention relates to the field of organic electroluminescent light-emitting devices (OLEDs) providing a large organic electroluminescent bottom emitting device with a homogeneous luminance over the entire emitting area, where the OLED device has a good lifetime behavior and can be produced with a high yield. The OLED device according to the present invention comprises a transparent substrate (2) coated with a transparent conductive layer as a bottom electrode (3), one or more electroluminescent layer stacks (4) deposited on top of the bottom electrode (3), each comprising an organic layer stack (41) with at least one organic light emitting layer, a reflective top electrode (42) on top of the organic layer stack (41) and an insulating layer (43) fully covering at least the top electrode (42), where the organic layer stack (41) is suitably shaped to prevent the top electrode (42) from contacting the bottom electrode (3) directly, wherein the bottom electrode (3) comprises first areas (31) covered by the one or more electroluminescent layer stacks (4) and at least one second area (32) not covered by the electroluminescent layer stack (4), wherein an electrically conductive shunting layer (5) is deposited on top of the second areas (32) of the bottom electrode (3) and at least partly on top of the insulating layer (43) to distribute a driving current across the bottom electrode (3) by providing a second conductive path (SCP) at least between the second areas (32). The invention further relates to a method for manufacturing such an OLED device (1).
H01L 51/52 - Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof specially adapted for light emission, e.g. organic light emitting diodes (OLED) or polymer light emitting devices (PLED) - Details of devices
In brachytherapy where position information relating to a radiation source is to be generated, a guidance system is adapted to acquire and process position data or position and tissue data, so that high-precision interventional radiotherapy can be carried out, especially according to a dose plan and for intra-fraction monitoring for a therapy plan or adaptive re-planning. The data can be stored and used to refine future treatment plans and for future correlation with long-term treatment outcome, especially in context with low energy brachytherapy.
The invention proposes a method of calculating power loss in an inductive power transfer system comprising a power transmitter (112) for transmitting power inductively to a power receiver (110) via transmitter coil (114) and receiver coil(104), the method comprising a step of obtaining, by power transmitter, time information for time alignment to enable the power transmitter to align the time of calculating the power loss with the power receiver; and a step of calculating power loss during power transfer according to the obtained time information and received power parameter communicated from the power receiver.
The invention relates to a method of MR imaging of at least a portion of a body (10) of a patient placed in an examination volume of a MR device (1), the method comprising the steps of: - subjecting the portion of the body(10) to a first imaging sequence for acquiring a first signal data set (21); - subjecting the portion of the body (10) to a second imaging sequence for acquiring a second signal data set (23), wherein the imaging parameters of the second imaging sequence differ from the imaging parameters of the first imaging sequence; - reconstructing a MR image from the second signal data set (23) by means of regularization using the first signal data set (21) as prior information. Moreover, the invention relates to a MR device (1) and to a computer program for a MR device (1).
G01R 33/56 - Image enhancement or correction, e.g. subtraction or averaging techniques
G01R 33/561 - Image enhancement or correction, e.g. subtraction or averaging techniques by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
G01R 33/567 - Image enhancement or correction, e.g. subtraction or averaging techniques gated by physiological signals
A system for displaying a set of interrelated objects comprises an initializer (1) for identifying a plurality of interrelated objects, a first information filter (2) for selecting a first subset of the plurality of interrelated objects for display based on a first information filter setting, a first displayer (3) for displaying the first subset of the plurality of interrelated objects on a first display area, a user interface (7) for enabling a user to select a region of the first display area for enlargement by visually indicating the region in the first display area, wherein the user can select the region independently of locations of the displayed objects in the first display area, a second information filter (4) for selecting a second subset of the plurality of interrelated objects for display based on a second information filter setting, wherein the second information filter is arranged for selecting objects corresponding to the selected region with an increased level of information detail compared to the first information filter, and a second displayer (5) for displaying the second subset of the plurality of interrelated objects on a second display area.
G06F 19/00 - Digital computing or data processing equipment or methods, specially adapted for specific applications (specially adapted for specific functions G06F 17/00;data processing systems or methods specially adapted for administrative, commercial, financial, managerial, supervisory or forecasting purposes G06Q;healthcare informatics G16H)
The present invention relates to an X-ray tube for stereoscopic imaging, an X- ray imaging system for stereoscopic imaging, a method for stereoscopic imaging as well as a computer program element and a computer readable medium for stereoscopic imaging. In order to provide stereoscopic imaging with improved space requirements and enhanced weight characteristics, an X-ray tube (10) for stereoscopic imaging is provided, comprising a cathode (12), an anode (14), means (16) for deflection of an electron beam, an X-ray aperture (18) with at least a first hole (20) and a second hole (22), and an envelope (24) housing the cathode and the anode. The means for deflection are adapted such that the electron beam from the cathode can be deflected such that the electron beam hits the anode in at least two stereo focal spot positions (26) separated from each other with a first distance (28) defining a stereo direction (30). The aperture is fixedly arranged inside the envelope and an X-ray beam (32) is generated at each focal spot emanating in a viewing direction (34) through one of the at least first and second holes in the aperture. The direction of the first distance is perpendicular to the viewing direction, wherein the first distance is adaptable.
H01J 35/14 - Arrangements for concentrating, focusing, or directing the cathode ray
H01J 35/30 - Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof by deflection of the cathode ray
A61B 6/02 - Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
88.
CATHETER BIOPSY DEVICE WITH REDUCED CONTAMINATION RISK
An envelope for covering a device is provided. The envelope has a longitudinal shape and comprises an inner surface, an outer surface, a first end and a second end. The first end and the second end are arranged opposite to each other in a longitudinal direction of the envelope, wherein the first end is attachable to a device and wherein the second end is open. The envelope is arranged to upend inwards while pulling the first end towards the second end, such that at least a part of the outer surface is facing inwards.
The present invention relates to an X-ray tube for radiographic imaging, an X- ray imaging system for examining a region of interest of an object and a method for radiographic imaging. In order to provide radiographic imaging with reduced dose, which can easily be integrated in the work flow, an X-ray tube (12) for radiographic imaging is provided comprising a cathode (50), an anode (52), means for deflection (54) of an electron beam (56); an X-ray aperture (58) with an X-ray transparent opening (60) and an envelope (62) housing the cathode and the anode. The means for deflection are adapted such that the electron beam from the cathode can be deflected such that the electron beam hits the anode in at least two focal spot positions (62, 64), wherein the at least two focal spot positions are arranged with different distances (66) to the opening in the X-ray aperture. The aperture is fixedly arranged inside the envelope. An X-ray beam (70, 74) is generated at each focal spot, wherein the X- ray beam is emanating in a viewing direction (68), wherein at least for one focal spot the X- ray beam is emanating through the opening in the X-ray aperture.
H01J 35/14 - Arrangements for concentrating, focusing, or directing the cathode ray
H01J 35/30 - Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof by deflection of the cathode ray
G21K 1/02 - Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators
A system and method for modeling a body volume from at least one projection is proposed, wherein the following method steps may be performed on the system: (1) receiving data representing at least one 2D projection of the body volume, (2) receiving data representing a 3D model of the body volume, (3) interactively defining edges of the body volume in the at least one 2D projection, and (4) adapting the 3D model of a body volume on the basis of the at least one 2D projection of the body volume, wherein the model may be a mean model based on a plurality of 3D data sets from different bodies.
The present invention relates to an apparatus and method for analyzing building auditing information to identify irregular usage patterns and incorrect audit information. The auditing information, such as energy consumption, is analyzed using presence information at room or zone level. Based on pre-selected expectations, clustering is applied to data sets. By using different criteria, the clustering results are examined within every cluster and among clusters to find irregular information. Furthermore, through cross-checking with other background information, irregular usage pattern can be found and incorrect audit information can be identified, so that succeeding energy prediction and decision-support algorithms can work on a reliable set of profiles.
A method for processing projection data in the projection domain includes receiving the projection data. The projection data is generated by a spectral detector and includes two or more independent energy-resolved measurements in which at least one of the two or more measurements has first photon statistics. The method further includes generating a de-noised measurement in electronic format for the at least one of the two or more measurements having the first photon statistics. The de-noised measurement has second photon statistics which are better than the first photon statistics.
The present invention relates to an electroluminescent device (100) comprising a pair of electroluminescent stacks (101,102), each stack comprising a first electrode layer (103,104), a second electrode layer (105,106) and an electroluminescent layer (107,108) being located between the first and second electrode layers (103-105,104-106), an electrical connection (115,116) between the two stacks (101,102),each of the second electrode layers comprising a conductive plate, the two conductive plates forming a pair of receiver electrodes for capacitive power transfer.
H01L 27/32 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including components using organic materials as the active part, or using a combination of organic materials with other materials as the active part with components specially adapted for light emission, e.g. flat-panel displays using organic light-emitting diodes
The present invention relates to a VCSEL array comprising several VCSELs arranged side by side on a common substrate (1). Each VCSEL is formed of at least a top mirror (5, 14), an active region (4), a current injection layer (3) and an undoped bottom semiconductor mirror (2). The current injection layer (3) is arranged between the active region (4) and the bottom semiconductor mirror (2). At least an upper layer of the substrate (1) is electrically conducting. Trenches (8) and/or holes are formed between the bottom semiconductor mirrors (2) of said VCSELs to said upper layer of said substrate (1). A metallization (9) electrically connects the upper layer of the substrate (1) with the current injection layer (3) through said trenches (8) and/or holes. The proposed VCSEL array allows a homogeneous current injection an has a high efficiency and power density.
H01S 5/183 - Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]
The invention describes a method of driving a gas-discharge lamp (1) according to conditions in a specific region (R) of the lamp (1), which gas-discharge lamp (1) comprises a burner (2) in which a first electrode (4) and a second electrode (5) are arranged on either side of a discharge gap, which lamp (1) is realised such that the position (PCs) of a coldest spot during an AC mode of operation is in the vicinity of the first electrode (4), which method comprises the steps of initially driving the lamp (1) in the AC mode of operation; monitoring an environment variable of the lamp (1), which environment variable is indicative of conditions in a specific region (R) of the lamp (1); switching to a temporary DC mode of operation at a DC power value on the basis of the monitored environment variable, whereby the first electrode (4) is allocated as the anode; and driving the lamp (1) in the DC mode of operation until the monitored environment variable has returned to an intermediate environment variable threshold value (TDCAC). The invention also describes a gas-discharge lamp and a driver for a gas-discharge lamp.
When applying shielded ECG leads to a patient, during the presence of strong RF signals such as electrocautery, high currents may flow through the cable capacitance to the shield and from there back to the patient via another cable capacitance and electrode, thus causing skin burnings. Such high currents can be reduced dramatically when the shields of the lead cable are separated by means of connecting series resistances into the shield conductors. Implementing these resistors into a ECG trunk cable allows the usage of uniform lead cables for all applications.
The invention relates to a phosphor composition for LEDs with flat absorption curve in the blue spectral range (430 - 460 nm) by having a Ce (III) doped phosphor and a Eu (II) doped phosphor. The increase of absorption of the Ce(III) doped phosphor from 430 nm to 460 nm compensates the decrease of absorption of the Eu(II) phosphor leading to a wanted flattened absorption behavior of the mixture.
A light-emitting device (1), comprising an LED-module (3) comprising at least one LED mounted on a carrier and at least one connection pad (10a-b) for electrical connection of the LED module (3), a heat dissipator (2) for dissipating heat generated by the LED when in operation, a connection board (4) comprising a substrate having a conductor pattern for enabling provision of external power to the LED module (3), an interconnecting arrangement (7a-d) comprising at least one connection spring (7a-d) attached to the connection board (4) electrically interconnecting the at least one connection pad (10a-b) of the LED module (3) with the conductor pattern of the connection board (4), and an LED-holder comprising at least one holding spring (7a-d) attached to the connection board (4) exerting a spring force there by pressing the LED-module (3) against the heat dissipator (2) to provide a thermal connection between the LED-module (3) and the heat dissipator (2). The interconnecting arrangement (7a-d) is configured to allow movement between the conductor pattern of the connection board (4) and the at least one connection pad (10a-b). The at least one connection spring (7a-d) constitutes the at least one holding spring (7a-d), to simultaneously electrically interconnect the at least one connection pad (10a-b) of the LED-module (3) with the conductor pattern of the connection board (4) and press the LED-module (3) against the heat dissipator (2).
A medical imaging device (300) comprising a magnetic resonance imaging system(302). The medical image device further comprises a memory(334) containing machine executable instructions (370, 372, 374, 376, 378, 380, 382, 384, 386) for execution by a processor (328). Execution of the instructions causes the processor to receive (100, 204) a pulse sequence protocol (340). Execution of the instructions further causes the processor to determine (102, 206) a pulse sequence type classification (342) descriptive of the pulse sequence protocol. Execution of the instructions further cause the processor to determine (104, 208) a magnetic resonance contrast classification (344), wherein the choice of the magnetic resonance contrast classification depends upon the pulse sequence type classification. Execution of the instructions further causes the processor to determine (106, 210) a pulse sequence protocol classification (346). The pulse sequence protocol classification is determined by the pulse sequence type classification and the magnetic resonance contrast classification.
The invention relates to a method of MR imaging of at least a portion of a body (110) of a patient placed in an examination volume of a MR device, the method comprising the steps of: - subjecting the portion of the body (110) to an imaging sequence comprising at least one RF pulse, the RF pulse being transmitted toward the portion of the body (110) via a RF coil arrangement (109) to which RF signals are supplied by two or more RF power amplifiers the RF power amplifiers being activated alternately during the imaging sequence in a time -multiplexed fashion, wherein the imaging sequence requires a RF duty cycle and/or a RF pulse duration exceeding the specification of at least one of the RF power amplifiers; - acquiring MR signals from the portion of the body (110); and - reconstructing a MR image from the acquired MR signals. Moreover, the invention relates to a method of MR spectroscopy involving the alternating use of RF power amplifiers in a time -multiplexed fashion.
G01R 33/561 - Image enhancement or correction, e.g. subtraction or averaging techniques by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
G01R 33/56 - Image enhancement or correction, e.g. subtraction or averaging techniques
G01R 33/36 - Electrical details, e.g. matching or coupling of the coil to the receiver
patents