[Problem] To improve reliability in identifying the movement of a probe when inputting a control command by operating the probe. [Solution] The present invention is characterized by being provided with: a probe 12 that transmits and receives ultrasonic sonic waves to and from a subject 10; and a probe operation command unit 30 that sequentially inputs a plurality of pieces of ultrasonic image data acquired in chronological order by the probe, determines the displacement of a set region, which is set for the ultrasonic image data, on the basis of pixel data for the set region, identifies movement of the probe on the basis of the determined displacement of the set region in the pieces of ultrasonic image data, and outputs, to a device control unit 34, a control command that is set in association with the identified movement of the probe.
The X-ray high-voltage device is provided with a transformer, an inverter for converting a direct current voltage into an alternating current voltage, a rectification circuit for smoothing the alternating current voltage and supplying a direct current voltage to an X-ray tube, a control unit for controlling the inverter, and a resonance circuit whereof the constitution includes the transformer. The frequency of the alternating current voltage applied to the rectification circuit is set to be (natural number + 1) times the frequency at which the inverter is driven by setting the resonance circuit in such a way that the frequency of the resonance current that is supplied from the inverter to the resonance circuit is (natural number + 1) times the frequency at which the inverter is driven.
Provided is an improved technology for obtaining diagnostic information relating to elasticity of a tissue in an ultrasonic diagnostic device. A displacement measurement unit (30) obtains displacement information of a tissue in a subject on the basis of received data acquired from a cross-section of the subject using a probe (10). A tissue diagnostic unit (40) obtains diagnostic information relating to the elasticity of the tissue in the subject on the basis of the displacement information. A stability index calculation unit (50) obtains a stability index relating to stability of the cross-section on the basis of a result of comparison between frame data different from each other out of a plurality of frame data acquired from the cross-section of the subject using the probe (10). An index image formation unit (52) forms an index image visually indicating the stability index on the basis of the stability index. The formed index image is displayed on a display unit (62).
Provided is an ultrasound imaging apparatus whereby artifacts in a generated image can be reduced even when the imaging subject moves during spatially encoded transmission/reception. In the present invention, spatially encoded ultrasonic waves are transmitted three or more times toward a predetermined position from at least two transmission regions of an ultrasonic probe simultaneously. A reception unit in the present invention includes a decoding unit and a synthesizing unit, and the decoding unit performs decoding corresponding to the spatial encoding and generates a decoded reception signal (HA1) using two or more of three or more reception signals (R1, R2, R3) outputted by the reception regions in corresponding fashion to the three or more transmissions of ultrasonic waves. This processing is performed for each of two or more different combinations of the two or more reception signals used, and a plurality of decoded reception signals (HA1, HA2) are thereby generated. The synthesizing unit adds the plurality of decoded reception signals (HA1, HA2) and obtains a decoded reception signal (HA’) in which an unwanted signal (19b) is suppressed.
The purpose of the present invention is to appropriately display the state of biological tissue when punctured. The diagnostic ultrasound apparatus is provided with: a tomographic image-generating section (20) for generating tomographic image frame data on the basis of ultrasonic waves reflected by a test object (16) that is being punctured; a displacement data-generating section (28) for generating displacement image data representing the displacement of the biological tissue of the test object (16) on the basis of tomographic image frame data for multiple frames; and an image-combining section (22) for displaying a displacement image representing the state of displacement of the biological tissue superimposed on a tomographic image on a monitor (30) on the basis of the tomographic image frame data and the displacement image data. As a result, displacements such as deformation of the biological tissue that result from puncturing are displayed.
Provided is a diagnostic ultrasound apparatus capable of obtaining more reliable pulse wave information with a relatively small number of measurements. The calculation unit of the diagnostic ultrasound apparatus is provided with a pulse wave measurement unit for measuring pulse waves that move inside a blood vessel in a living body using echo signals that are reflected at two locations of the blood vessel wall when multiple ultrasound beams are irradiated at a slant relative to the blood vessel. The pulse wave measurement unit obtains, for the multiple ultrasound beams, the respective temporal changes of a first echo signal reflected from the side of the blood vessel that is closer to the probe and a second echo signal reflected from the side that is further from the probe and calculates the pulse wave velocity using the difference in time that changes arising from the pulse wave occur at the respective reflection origins (measurement points) and the distance between measurement points in the direction in which the blood vessel runs.
The present invention estimates and corrects changes in X-ray radiation quality arising from small design tolerances, etc. for substances between the X-ray source and detection elements. As a result, reduction in the ability to distinguish substances by the dual energy imaging method is prevented. The X-ray image pickup apparatus (100) is provided with an inherent filtration-calculating unit (223) for calculating the deviation from a reference radiation quality as a transmission distance (inherent filtration) of a specific reference substance using measurement data for air (without a subject) taken at two or more different tube voltages. The inherent filtration-calculating unit calculates the reference substance transmission distance (inherent filtration) for each detection element by applying reference substance transmission distance conversion using the dual energy imaging method to the measured data. When imaging the subject, images in which changes in radiation quality have been corrected are obtained by performing dual energy imaging that takes the calculated inherent filtration for each detection element into account.
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
8.
SEMICONDUCTOR RADIATION DETECTOR, NUCLEAR MEDICINE DIAGNOSTIC DEVICE USING SAME, AND METHOD FOR PRODUCING SEMICONDUCTOR RADIATION DETECTOR
This semiconductor radiation detector (101) uses a semiconductor crystal (111) sandwiched by a cathode (112) and an anode (113). The semiconductor crystal (111) is configured from a thallium bromide monocrystal in which the concentration of lead as an impurity is less than 0.1 ppm, the full width at half maximum of the (110) rocking curve in the X-ray diffraction in a specimen tilting angle scan is no greater than 1.6 degrees, the full width at half maximum in a specimen in-plane rotation angle scan is no greater than 3.5 degrees, and the full width and half maximum in an X-ray incident angle scan is no greater than 1.3 degrees. As a result, it becomes possible to measure the γ-ray energy spectrum at 122 keV and 662 keV and an energy resolution of no greater than 8% with respect to 122 keV γ-rays is obtained.
G01T 1/24 - Measuring radiation intensity with semiconductor detectors
G01T 1/161 - Applications in the field of nuclear medicine, e.g. in vivo counting
H01L 31/08 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof in which radiation controls flow of current through the device, e.g. photoresistors
In image data obtained, the radius (50) and ulna (52), and interosseous soft tissue (78) between the two bones are identified. A midpoint (Ygk) of the length of the interosseous soft tissue (78) in a Y axis direction in (Xk) coordinates is determined. This midpoint is determined in multiple coordinates, and an approximate straight line of these midpoints is determined and set as a reference line (80). The foot of the perpendicular from the ulnar styloid (54) to the reference line (80) is set as a reference position (82). A region of interest is set in a position at a predetermined distance from the reference position (82) along the reference line (80).
When the readout key is operated in a non-ultrasound test period, an indirect playback mode is selected. In this case, after an image selection screen and a list display screen have been displayed in succession, an individual display screen is displayed. On the individual display screen, the ultrasound image group selected by the examinee is selectively displayed. When the readout key is operated during an ultrasound test period, a direct playback mode is selected. In this case, the individual display screen is immediately displayed. On the individual display screen, the ultrasound image group being acquired and stored in the ultrasound test that is currently being executed is selectively displayed.
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
Goods & Services
X-ray apparatus for industrial purposes; diagnostic ultrasound apparatus, other than for medical use; testing apparatus not for medical purposes; computer software for industrial X-ray apparatus; computer software for diagnostic ultrasound apparatus for industrial use; computer software for medical X-ray diagnostic apparatus; computer software for diagnostic ultrasound apparatus for medical use. X-ray diagnostic apparatus for medical use; diagnostic ultrasound apparatus for medical use; ultrasound bone densitometer for medical use.
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
Goods & Services
X-ray apparatus for industrial purposes; diagnostic ultrasound apparatus, other than for medical use; testing apparatus not for medical purposes; computer software for industrial X-ray apparatus; computer software for diagnostic ultrasound apparatus for industrial use; computer software for medical X-ray diagnostic apparatus; computer software for diagnostic ultrasound apparatus for medical use. X-ray diagnostic apparatus for medical use; diagnostic ultrasound apparatus for medical use; ultrasound bone densitometer for medical use.
13.
MAGNETIC RESONANCE IMAGING APPARATUS AND TEMPERATURE INFORMATION MEASUREMENT METHOD
Provided is a technique for improving in vivo temperature measurement accuracy in temperature measurement using MRS/MRSI. A cerebrospinal fluid suppression sequence for suppressing the nuclear magnetic resonance signal from cerebrospinal fluid without affecting the nuclear magnetic resonance signal from a desired metabolite is performed prior to the signal measurement sequence for measuring the respective nuclear magnetic resonance signals for water and the metabolite. From the nuclear magnetic resonance signals for water and the metabolite thereby obtained in which the nuclear magnetic resonance signal from cerebrospinal fluid has been suppressed, spectra are obtained. By fitting the spectral peaks obtained to a model function, the resonance frequencies of the water and the metabolite are obtained and temperature is calculated using the difference thereof.
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
14.
MAGNETIC RESONANCE IMAGING APPARATUS AND MAGNETIC RESONANCE IMAGING METHOD
The purpose of the present invention is to obtain high quality images even when measuring with radial sampling. For said purpose, a pre-measurement is performed. Of the echo signal shifts, only the component that differs for each individual blade is extracted and the shift in the k-space of the echo signal due to said component is reflected in reconstruction processing. For the pre-measurement, readout gradient magnetic field pulses in which only the polarity has been changed positively or negatively are applied with a pulse form that is the same as the readout gradient magnetic field pulse used in the image acquisition sequence and the respective echo signals are acquired. Using the change in the phase difference between the two echo signals as the shift, the respective shifts for the X-axis, Y-axis and Z-axis of the MRI apparatus are obtained.
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
15.
MAGNETIC RESONANCE IMAGING DEVICE AND IMAGING PARAMETER DETERMINATION METHOD
Provided is an MRI device using a transmission coil having a plurality of channels, wherein safety and image quality are obtained at the same time. In the present invention, a SAR distribution is computed, and an imaging parameter is determined for optimizing high-frequency magnetic field distribution of an imaging region while keeping the maximum value of the SAR equal to or less than a threshold value set in advance. The determined imaging parameter includes a high-frequency magnetic field parameter for specifying a high-frequency pulse transmitted from each of a plurality of channels. The SAR distribution is computed using a database for retaining an electric field distribution of each of the plurality of channels for each subject model retained in advance.
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
16.
DIAGNOSTIC ULTRASOUND APPARATUS AND ELASTICITY EVALUATION METHOD
Provided is a technology that reduces the deterioration of measurement precision and reproducibility due to long measurement times in measurement of shear wave velocity in radiation pressure elastography and is capable of acquiring ultrasound images of high diagnostic value. In radiation pressure elastography, while detecting shear waves from echo signals due to irradiation of a tracking pulse, information relating to the movement (fluctuation) of a measurement region is extracted and is provided to the user as reliability information representing the degree of reliability of the measurement results. From the extracted information, the cause of the fluctuation is also specified and presented to the user. Moreover, when arithmetically averaging measurement results of multiple runs, weighting is performed using the reliability information.
The present invention provides an ultrasonic image pickup device and an ultrasonic image display method which are capable of measuring stress distribution with high precision by setting conditions of a subject (shape, boundary condition, etc.) with high precision. This ultrasonic image pickup device comprises a pressure measuring unit which measures a pressure applied to a subject, a condition setting unit which sets conditions relating to sites to be measured on the basis of an ultrasonic image of the subject, and a stress information computing unit which computes stress information of the measured site under said conditions on the basis of said pressure.
In order to provide a technique with which it is possible to arrange, during fluoroscopy, an annotation that moves so as to follow an image, and with which it is possible to use the information of the annotation even during surgery or clinical training, this x-ray imaging device is provided with: an x-ray source; an x-ray detector arranged in opposition to the x-ray source; an image generation unit that generates an x-ray image on the basis of x-rays detected by the x-ray detector; a display unit that displays the x-ray image generated by the image generation unit; and a position recognition unit that recognizes the position of the x-ray detector or the position of a subject with respect to the x-ray detector. The image generation unit includes an annotation addition unit that arranges a predetermined annotation in the x-ray image. The annotation addition unit updates the position of the annotation to be superposed on the x-ray image on the basis of the position of the x-ray detector or the position of the subject as recognized by the position recognition unit.
Provided is an ultrasound image pickup apparatus capable of determining highly precise delay amounts for a broad range of image pickup points even when focused transmission is performed. A transmission beam former (602) performs focused transmission to form a transmission focal point (203) of an ultrasound beam (104) inside a subject. A reception beam former (603) is provided with a virtual sound source delay amount-computing section (609) for determining delay amounts for received signals assuming that the transmission focal point (203) is the virtual sound source, and a correction-computing section (610) for correcting the delay amounts determined by the virtual sound source delay amount-computing section (609) according to the position of the image pickup point. As a result, highly precise delay amounts can be determined for a broad range of image pickup points.
An objective of the present invention is, in an aperture synthesis process, to reduce receiving signal variations between transmissions, and obtain a high-precision image. A receiving beam former (107) which carries out an aperture synthesis process comprises: a delay add phasing unit (204) which delays and adds receiving signals of each transmission for one or more receiving foci, phasing the receiving signals; a beam memory (206) which stores delay phased data of each of the receiving foci from the delay add phasing unit (204) for each transmission; and an inter-transmission synthesis unit (205) which reads out and synthesizes the delay phased data for a given receiving focus, among the delay phased data which is stored in the beam memory for each transmission. With the inter-transmission synthesis unit (205), the synthesis is carried out after weighting the delay phased data for each transmission for each given receiving focus with respective weighting coefficients.
In the present invention, a battery box is provided on the lower side of a survey meter body so as to protrude downwardly. Four primary batteries are accommodated inside the battery box with inclined postures. A stepped structure is formed between the front surface of the battery box and the lower surface of the body. The survey meter can be held by a hand while an index finger, or the like, is hooked on the stepped structure. It is also possible to remove the battery box and dispose a plate-like secondary battery in an accommodation space.
An objective of the present invention is to provide a high spatial resolution CT image or a CPR image with no deterioration due to interpolation by photographing a site of interest of a subject while constantly moving the site of interest of the subject toward the center of photography. When photographing while rotating a rotating disk wherein a radiation source and a radiation detector are positioned in opposition to each other and while moving a subject in a body axis direction of the subject which is a direction which intersects the rotation direction, either a platform whereupon the subject is mounted is moved in a direction which is orthogonal to the body axis direction of the subject or an angle of a scanner is changed. In image reconstruction, the image reconstruction is carried out using either movement information of the platform during photography (movement information in the direction which is orthogonal to the body axis direction) or the angle information of the scanner.
In order to provide a technique for reducing system noise from output signal values (measurement data), there is provided an X-ray CT device having an X-ray generation unit for X-ray irradiation of a subject under test, an X-ray detection unit for detecting X-rays that have passed through the subject under test, a correction process unit for correcting the output signal of the X-ray detection unit, and a reconstruction computation unit for reconstructing an image from the output of the correction process unit, wherein the X-ray detection unit includes arrayed detection elements; and the correction process unit, while maintaining the average value of output signal values of a prescribed plurality of detection elements centered on a detection element of interest from among the detection elements, reduces dispersion of the output signal values of the prescribed plurality of detection elements centered on the detection element of interest.
In order to provide a simply configured X-ray CT device in which the standby time until X-ray irradiation is permissible is reduced without detection of positive electrode rotation frequency, a control unit (23) selects a rated positive-electrode rotation frequency from amongst a plurality of types thereof in response to X-ray irradiation conditions, and supplies a drive current, which implements the selected rated positive-electrode rotation frequency, from a starter circuit (10) to a stator coil (81). The control unit (23) acquires the time required to arrive at an irradiation-enabling rotation frequency, which is less than the rated positive-electrode rotation, that is necessary for X-ray irradiation under the X-ray irradiation conditions. If the arrival time has passed, X-ray irradiation is permitted. Thus, X-ray irradiation can be initiated at the minimum permissible positive-electrode rotation frequency in response to the X-ray irradiation conditions, and the standby time, during which a user waits before a positive electrode rotation frequency has been reached, can be reduced.
A first calculation unit calculates a moving average (dose rate) using a relatively long averaging period (T). A second calculation unit calculates an integrated value (dose rate) using a relatively short time constant (τ). In a state in which the moving average is displayed, an alarm determination unit identifies a dose abnormality on the basis of the integrated value. Within a measurement start period, a display switching determination unit identifies a constant dose rate state on the basis of the integrated value. A restoration determination unit identifies the restoration of a dose rate on the basis of the integrated value. If a dose rate is displayed using a large degree of smoothing, sudden increases, and the like, in the dose rate can be identified quickly.
A first grounding capacitor on a device side and a second grounding capacitor on a power source side within a noise filter are connected by the same filter ground plate, and when the filter ground plate is grounded on the second grounding capacitor side to a device casing body, a portion of noise current which flows through the first grounding capacitor to the filter ground plate leaks through the second grounding capacitor to a power source supply unit. In the present invention, a noise filter comprising a plurality of grounding capacitors has separate grounding capacitor grounds (filter casing body grounds) for each grounding capacitor, and the respective filter casing body grounds are connected to device casing body grounds.
The present invention provides a technique that makes it possible to adjust resonance frequency without sacrificing test space in a high-frequency coil of a of a tunnel-type MRI apparatus. The present invention provides a high-frequency coil of a tunnel-type MRI apparatus that forms a resonant loop for determining the resonance frequency of the high-frequency coil from a high-frequency shield and a coil pattern, the tunnel-type MRI apparatus being equipped with a cylindrical high-frequency shield, a coil pattern placed on a cylindrical virtual plane having the same central axis as the high-frequency shield, and a frequency adjustment unit. The frequency adjustment unit is placed between the high-frequency shield and the coil pattern so as to be able to adjust the coupling capacitance therebetween, thereby making it possible to adjust the resonance frequency of the resonant loop.
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
G01R 33/34 - Constructional details, e.g. resonators
The noise of a CT image is accurately reduced using noise information determined from the CT image. The present invention has an iterative-approximation reconstruction unit that reconstructs a CT image in a reconstruction range of an object on the basis of measured projection data obtained by the X-ray detection unit of an X-ray apparatus, and iteratively corrects the CT image so that calculated projection data determined by forward projection using calculation of the CT image and the measured projection data detected by the X-ray detection unit are equal. The iterative-approximation reconstruction unit is provided with a noise measurement unit for calculating the noise intensity of the CT image in at least a prescribed region of interest, and iteratively corrects the CT image in the region of interest using the calculated noise intensity.
In order to provide an X-ray CT device and an image reconstruction method which are capable of improving spatial resolution of the entire effective field of view without loss of rotational speed in an FFS method which improves spatial resolution by moving an X-ray focal position to multiple positions to acquire projection data, the X-ray focal position in an X-ray tube device (101) is shifted to acquire focal point shift projection data (FFS projection data), a virtual view generation unit (126) up-samples the FFS projection data in a viewing direction (generation of a virtual view), and in a reconstruction calculation process of an image, a reconstruction calculation unit (127) reconstructs the image using actual data of the FFS projection data in a center region (604) which is closer to the center of the image than a prescribed boundary and using the up-sampled projection data in a peripheral region (603) which is outside the boundary.
The purpose of the present invention is: to manage medical images stored in a medium; to reduce the total size of DICOMDIR files, i.e. management files, stored in the medium along with the medical images; and to improve responsiveness during data reading/writing. Accordingly, the present invention extracts regularities from management files of medical-image groups stored in a medium, and compresses the management files on the basis of the extracted regularities. More specifically, the present invention is characterized by being provided with: a medium input/output unit which stores medical images in the medium; a selection unit which receives a selection of a plurality of medical images stored in the medium; a management-file generation unit which generates a management file for managing the selected plurality of medical images; a regularity extraction unit which extracts a regularity from the management file; and a compression unit which compresses the management file on the basis of the regularity, and stores said management file in the medium.
G16H 10/60 - ICT specially adapted for the handling or processing of patient-related medical or healthcare data for patient-specific data, e.g. for electronic patient records
G06F 12/00 - Accessing, addressing or allocating within memory systems or architectures
31.
HIGH-VOLTAGE GENERATION DEVICE AND X-RAY GENERATION DEVICE
Increasingly miniaturizing a Cockcroft-Walton high-voltage generation device carries the risk of discharges from connection points between components, i.e. insufficient insulation reliability. This Cockcroft-Walton circuit (1) comprises series-connected capacitors (2a-1 through 2a-4 and 2b-1 through 2b-4), each of which has end electrodes (22) at both ends. One capacitor (2a-1) and a capacitor (2a-2) adjacent thereto in series are electrically connected at a connection point (7a-1). Said connection point (7a-1) is positioned so as not to protrude outside a first space (9) between the end electrodes (22) on said capacitors (2a-1 and 2a-2). Said connection point (7a-1) is also electrically connected to the anode of one diode (3a-1) and the cathode of another diode (3b-1).
H05G 1/20 - Power supply arrangements for feeding the X-ray tube with pulse trains
H02M 7/10 - Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode arranged for operation in series, e.g. for multiplication of voltage
An ultrasound diagnostic device comprises a coefficient computation unit. The coefficient computation unit computes a coefficient on the basis of phase scattering in a plurality of received signals arranged in an element array direction. The coefficient is multiplied with beam data to which a phasing has been added. A correction unit ensures that the coefficient does not get smaller than necessary on the basis of a transmission frequency. Excessive suppression of a main lobe component is thus eliminated or reduced.
The shimming work assistance unit performs singular value decomposition of a response matrix, which represents the relationship between an error magnetic field distribution and an adjusted magnetic moment placement distribution. From the multiple eigenmodes obtained, the eigenmodes are selected and added one by one in order from the eigenmode with the highest eigenvalue, and the residual magnetic field error, which represents the fluctuation range of the difference between the magnetic field distribution, generated by the placement of the shimming magnetic moments corresponding to said eigenmode, and the error magnetic field distribution, is displayed on a display unit as a function of eigenmode order (line graph (1)).
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
H01F 7/20 - Electromagnets; Actuators including electromagnets without armatures
H01F 41/00 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
34.
MAGNETIC RESONANCE IMAGING DEVICE AND MAGNETIC RESONANCE IMAGING METHOD
Provided is a technique for use in MRI to efficiently minimize downstream blood in a specific area in a blood vessel having slow flow speed, such as the portal vein. To accomplish this, during an interval extending from application of an IR pulse to initiation of imaging proper, a plurality of Beam Sat pulses are applied such that a signal of blood inflowing to a desired imaging area from a desired blood vessel is suppressed just enough. The conditions for applying the Beam Sat pulses to accomplish this are selected on the basis of the flow speed of blood within the desired blood vessel, and the T1 of the blood in question, whereby downstream blood in a specific area in a blood vessel having slow flow speed, such as the portal vein, can be efficiently minimized.
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
35.
RADIOGRAPHIC IMAGE GENERATING DEVICE AND IMAGE PROCESSING METHOD
An objective of the present invention is to better reduce noise in an x-ray fluoroscopic image. Provided is a radiographic image generating device which: receives an input of a plurality of images with different image capture times for an x-ray fluoroscopic image which is image captured using x-rays; uses a temporally prior image and a temporally later image among the inputted plurality of images to perform motion detection and detect one instance of movement information in one image; computes for each local region a difference between the temporally prior image when positionally offset by the movement information amount and the temporally later image; determines, on the basis of the difference for each local region, a region for carrying out a time direction noise reduction process and a region for carrying out a space direction noise reduction process; sets three kinds of regions, regions wherein the time direction noise reduction process is carried out and the space direction noise reduction process is not carried out, regions wherein the space direction noise reduction process is carried out and the time direction noise reduction process is not carried out, and regions wherein both the time direction noise reduction process and the space direction noise reduction process are carried out; and carries out the noise reduction processes differing by each respective region.
Provided is an ultrasonic diagnostic device which is capable of effectively detecting blood flow state of a blood vessel, or a data processing method thereof. An ultrasonic diagnostic device (100) comprises: an ultrasonic signal generation unit (132) which receives echos of ultrasonic waves based on irradiated ultrasonic waves and generates an echo signal; an image processing unit (148) which generates an ultrasonic image based on the echo signal; a display device (164) which displays the ultrasonic image; a measuring position setting unit (112) which sets a measuring position by the ultrasonic waves on the displayed ultrasonic image; a processing condition setting unit (115) which sets a processing condition for acquiring state information using the measurement result based on the set measuring position; and a measurement data processing unit (220) which performs arithmetic processing based on the processing condition using the measurement result and acquires the state information. The ultrasonic diagnostic device (100) displays the state information acquired by the measurement data processing unit (220) on the display device (164).
Provided is a magnetic resonance imaging apparatus capable of computing the rate of electromagnetic wave absorption in a subject with high accuracy. For said purpose, the magnetic resonance imaging apparatus is provided with: a computing means for computing the rate of electromagnetic wave absorption in a subject that results from irradiating a RF pulse at an intended image pickup region in the subject or at a bed position; a means for setting image pickup conditions so that the computed absorption rate satisfies the conditions for the prescribed electromagnetic wave absorption rate by means of the relationship between the computed absorption rate and the prescribed electromagnetic wave absorption rate; a bed control device for controlling the tabletop according to the established image pickup conditions; a magnetic field-generating means for generating a magnetic field for MRI image pickup in the space accommodating the subject; a RF pulse-generating means for generating a RF pulse to be irradiated on the subject according to the established image pickup conditions; and a means for detecting the NMR signal generated by the subject and converting the detected NMR signal to an image.
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
38.
PROTEIN-POLYMER COMPLEX, TGase SUBSTRATE-CONTAINING POLYMER, TGase SUBSTRATE-CONTAINING MONOMER, METHOD FOR PRODUCING PROTEIN-POLYMER COMPLEX, AND METHOD FOR IMPROVING PROTEIN FUNCTION ON INTERFACE OR IN VICINITIY OF INTERFACE OF SOLID-LIQUID
KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION (Japan)
HITACHI ALOKA MEDICAL, LTD. (Japan)
Inventor
Kamiya, Noriho
Wakabayashi, Rie
Yahiro, Kensuke
Hayashi, Kounosuke
Abstract
Provided is a protein-polymer complex which is capable of detecting a target with good sensitivity. The present invention is a protein-polymer complex which is constituted by a protein having a primary amine being bonded to a glutamine (Gln) residue or the glutamine (Gln) in a polymer having a primary amine on a side chain, or which is constituted by a protein having a glutamine (Gln) residue being bonded to the primary amine.
In order to provide a magnetic resonance imaging device that does not use liquid helium and that can stably operate a superconducting magnet operating in driven mode, the present invention is, at a power source unit that supplies current to a superconducting coil, provided with a control unit that controls the current supplied to the superconducting coil on the basis of at least one unit of information among the power supply state from the outside to the power source unit, the operating state of a refrigerator, the temperature of the superconducting coil, the magnetostatic field strength, the current value flowing to the superconducting coil, and the nuclear magnetic resonance signal detected by a detector.
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
G01R 33/381 - Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using electromagnets
In order to improve image quality while reducing the SAR regardless of imaging conditions such as slice position, phase encoding amount and difference in RF pulse type, this VERSE method determines the compression rate of the VERSE pulse depending on the imaging conditions. To this end, this magnetic resonance imaging device is provided with an imaging sequence generating unit for generating an imaging sequence by applying the imaging conditions to a preset pulse sequence, and an imaging unit which performs measurements in accordance with the imaging sequence and reconstructs an image from the acquired echo signal. The pulse sequence includes a VERSE pulse which comprises a high-frequency magnetic field pulse and a slice selection gradient magnetic field pulse, and the imaging sequence generating unit is provided with a VERSE pulse design unit which determines the compression rate of the VERSE pulse depending on prescribed imaging conditions and applies the determined compression rate when generating the imaging sequence.
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
This magnet device (2) is provided with a pair of generally disk-shaped magnetic poles (4U) situated in opposition, and a yoke (3) which is C-shaped or U-shaped in side view and which is situated with either end of the C-shape or U-shape situated in proximity to the magnetic poles (4U). The yoke (3) has a yoke-side opposing portion (15U) in proximity to and opposing the magnetic poles (4U), the yoke-side opposing portion (15U) having a center strip area (15b) that includes part of a vertical symmetric plane (α) of the yoke (3), and side strip areas (15c) situated to either side of the center strip area (15b), further away from the vertical symmetric plane (α). At a height (W3) of the yoke-side opposing portion (15U) with respect to a yoke-side opposing surface (15a) which is situated in proximity and opposing the magnetic poles (4U), the center strip area (15c, W3b) is taller than the side strip areas (15c, W3c). The height (W3) of the yoke-side opposing portion (15U) with respect to the yoke-side opposing surface (15a) decreases in weakly monotonic fashion further away from the vertical symmetric plane (α), and the maximum value and minimum value thereof differ.
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
G01R 33/381 - Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using electromagnets
42.
ULTRASOUND IMAGE PICKUP APPARATUS AND ULTRASOUND IMAGE PICKUP METHOD
The present invention provides an ultrasound image pickup apparatus and ultrasound image pickup method capable of evaluating the stability of Doppler information acquired by a Doppler method and of observing the dynamics of living tissue (heart, blood vessels, etc.) in a subject on the basis of stable Doppler information. This ultrasound image pickup apparatus is equipped with: a probe for transmitting and receiving ultrasonic signals to and from the subject; a Doppler information-generating unit for generating Doppler information from the ultrasonic signals; a degree of similarity-calculating unit for calculating the degree of similarity between multiple sets of Doppler information; and a similar Doppler information-acquiring unit for acquiring Doppler information having a specified degree of similarity as similar Doppler information.
Provided is an ultrasound diagnostic device which is compact, which has a high degree of freedom with respect to the viewing position and angle of a display panel, and which exhibits excellent operability. The present invention is provided with: a main body (10) provided with an operation panel (20); a first display (30) coupled to the main body via a support part (60); and a second display (40) detachably connected to the main body. The second display (40) is provided with a transmission/reception circuit for transmitting and receiving to and from the main body (10). When the second display (40) is detached, a main-body-side coupling part (25) with which the second display (40) is coupled becomes a coupling part of the second display (40).
A modulation frequency control unit (36) controls a displacement-use transmission unit (34) such that a displacement-use ultrasonic beam (EB) is subjected to modulation processing using a relatively high modulation frequency and a relatively low modulation frequency. A displacement measurement unit (24) measures the displacement of a tissue in a treatment area (P) at each of the modulation frequencies, and a coagulation measurement unit (25) measures local coagulation in the treatment area (P) on the basis of the measurement result of the displacement at the relatively high modulation frequency, and measures wide-area coagulation in the treatment area (P) on the basis of the measurement result of the displacement at the relatively low modulation frequency. Consequently, for example, the presence or absence of local coagulation immediately after coagulation has occurred, and the like can be measured with high accuracy, and further, for example, the size of wide-area coagulation after coagulation has progressed, and the like can be measured with high accuracy.
To provide an X-ray CT device and an imaging method which can handle movements having periodic variations and reduce radiation exposure while maintaining image quality, an image processing device (40) of an X-ray CT device (1) acquires, prior to imaging, electrocardiac information of a subject and distribution of the heart rate (movement period). Additionally, the frequency of each heart rate is calculated. Then, an X-ray modulation curve is calculated such that an X-ray dose is at a high level at a specific phase time in a most frequent movement period (most frequent heart rate) and the X-ray dose corresponds to the frequency at the specific phase time in each movement period other than the most frequent movement period. Specifically, the X-ray dose is modulated such that when the heart rate is lower than the most frequent heart rate the X-ray dose corresponds to the rate of the frequency at a finish time of the specific phase time. Further, the X-ray dose is modulated such that when the heart rate is higher than the most frequent heart rate the X-ray dose corresponds to the rate of the frequency at a start time of the specific phase time.
The present invention is capable of distinguishing four types or more of substances such as air, water (soft tissues), contrast medium, and bones (calcification) to diagnose progress of atherosclerotic sites using dual energy imaging. A subject is imaged with two types of different tube voltages and an image obtained by image reconstruction is binarized to carry out a reprojection process; thereby, the distance of penetration of air is estimated, the contribution of air in measurement projection data is determined, and the amount of reduction by the air is deducted from the projection data so as to enable distinction between four or more substances such as air, water (soft tissues), contrast medium, and bones (calcification).
In order to provide an X-ray imaging device which is capable of reducing storage capacity for storing radiographic sequential images, an X-ray imaging device (5) according to the present invention comprises: an X-ray irradiation unit (110) which irradiates a subject (1) with X-rays; an image generation unit (124) which detects the X-rays passed through the subject (1) and generates an image on the basis of the detected X-rays; an operational unit (246) for moving an imaging position of the subject (1); a control unit (330) which detects movement of the imaging position of the subject (1) and generates a compression control signal (332); an image compression unit (222) which carries out a compression process on the image according to the compression control signal (332); and a storage unit (230) which stores the compression processed image.
In order to provide an X-ray CT device and an imaging method which are capable of efficiently imaging a cadaver, a mode of death is selected by a mouse click operation or touch operation on any one of buttons (72-78) on a death mode selection screen (7) and input to a CPU (401) of an image processing device (40). The CPU (401) obtains imaging conditions from a storage unit (53) according to the input mode of death. For example, in a charred body mode, imaging conditions are defined in advance for high definition imaging of the pelvis region to estimate sex and for standard imaging of the whole body other than the pelvis region. In a sex estimation process, the cadaver's sex is estimated on the basis of the shape of the pelvis region and the result is output. In a drowned body mode, imaging conditions are defined in advance for high definition imaging of the lung field to measure the amount of water in the lungs and for standard imaging of the whole body other than the lung field. With an image diagnosis, the amount of water in the lungs can be measured without dissecting the same and as the water in the lungs is not spilled, the amount of water can be measured accurately.
A magnetic resonance imaging device (1) comprising: at least a pair of superconducting main coils (21) which are disposed in a manner so as to have the same central axis (2) as one another, and to be in plane symmetry in relation to the equatorial plane (4) that is orthogonal to the central axis (2); at least a pair of shield coils (22) which are disposed coaxially with the superconducting main coils (21), at the outer sides of the superconducting main coils (21), at the opposite side thereof to the equatorial plane (4), and in plane symmetry in relation to the equatorial plane (4), and generate magnetic fields of the reverse direction to the superconducting main coils (21); a pair of annular first magnetic bodies (31) which are disposed at the inner sides of the superconducting main coils (21) in the radial direction, and in plane symmetry in relation to the equatorial plane (4); and a second magnetic body (32) which is a protrusion provided to the outer peripheral side of an end surface (311) at the opposite side of the first magnetic bodies (31) to the equatorial plane (4). Thus, the uniform magnetic field performance of an image capture space is improved without reducing the degree of opening, and without causing the cost of the device to increase due to an increase in superconducting wires.
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
The purpose of the present invention is to provide technology for reducing deterioration of image quality due to phase differences between scan trajectories (blades) in measurement using a non-orthogonal sampling method. For said purpose, during image reconstruction, the present invention performs a correction that reduces phase differences between multiple scan trajectories (blades) measured using a non-orthogonal sampling method. For example, the reduction of phase differences is performed using a method, which: causes the phases at the intersection points of the blades to coincide; causes the phases of all of the blades, at the position where the shift in the frequency direction has been added, to coincide; or cancels the calculated phase change for each blade.
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
G01R 33/54 - Signal processing systems, e.g. using pulse sequences
51.
MAGNETIC RESONANCE IMAGING DEVICE, IMAGE PROCESSING DEVICE, IMAGE DIAGNOSIS DEVICE, IMAGE ANALYSIS DEVICE, AND MRI IMAGE CREATION METHOD AND PROGRAM
SCHOOL JURIDICAL PERSON KITASATO INSTITUTE (Japan)
HITACHI MEDICAL CORPORATION (Japan)
Inventor
Itatani, Keiichi
Miyaji, Kagami
Miyazaki, Shohei
Takahashi, Tetsuhiko
Abstract
An MRI wherein a blood flow parameter is presented to a user in a manner suitable for diagnosis of a disease and the user is assisted so that the user can easily ascertain a correlation between blood flow and the disease. An MRI device, wherein images of desired imaging regions of a subject are taken using different imaging methods and a plurality of images having different properties are obtained. The plurality of images include a form image and a blood flow vector image in which blood flow velocity vector values are used as pixel values. Each imaging method is executed so as to minimize positional misalignment between the plurality of images. Post-processing is performed on the blood flow vector image and the form image, and a blood flow parameter image indicating energy loss and other parameters is obtained. The obtained blood flow parameter image is then superposed on an image having information relating to a form or function of the region and displayed to the user.
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
A graphic image displayed on a tomographic image includes a puncture guide. The puncture guide has a main guide line and a sub guide line. The main guide line represents a reference puncture route based on a puncture angle, and the sub guide line represents the edge of a composite area defined by a plurality of scans. A deflection angle (θ1) is determined according to the designation of a puncture angle (ϕ1), and the puncture guide is formed on the basis of these angles.
Preprocessing is conducted on a unipolar pulse output from a photomultiplier tube, to thereby generate a bipolar signal (bipolar pulse). In the bipolar signal, the falling waveform portion (back slope) of the initial peak waveform is steep, and also cuts across the baseline, whereby it is possible to accurately identify the falling point as the zero crossing point. The accuracy of identification of the pulse width t can be improved thereby. In addition to the pulse width, further reference may be made to the crest value of the unipolar pulse, the crest value of the bipolar pulse, and the like, when determining line type.
The present invention obtains high quality tomosynthesis images in real time in a fluoroscopic apparatus using low dose fluoroscopic data. In the present invention, a detector detects X-rays irradiated from an X-ray source and the data obtained is obtained as fluoroscopic images. When an instruction is received from the user during this time, the X-ray source and the detector are moved relative to each other, pre-processing is performed on the fluoroscopic images acquired during this time, and the images are stored. Then, when a specified number has been stored, arithmetic processing is performed on the stored fluoroscopic images to obtain a tomographic image. The tomographic images obtained can be displayed along with the fluoroscopic images.
A medical image processing device such as an ultrasonic diagnosis device, wherein an observation point tracking process is sequentially performed between each of the adjacent frames in a frame sequence. The observation point thereby moves from the start coordinates to the end coordinates in a single heartbeat period. The difference between the coordinates is the error vector, and the total correction amount is obtained from the error vector. The total correction amount is adaptively allocated to individual frames to be corrected in the expansion period. More specifically, the allocated amount for each of the frames to be corrected is calculated on the basis of the amount of movement of the observation point representing the error indicator value obtained for each of the frames to be corrected. A larger allocation amount is applied for a larger amount of observation point movement, and a smaller allocation amount is applied for a smaller amount of observation point movement. It is thereby possible to naturally correct each of the observation point coordinates.
A61B 8/00 - Diagnosis using ultrasonic, sonic or infrasonic waves
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
In order to provide an X-ray tube device having a configuration which is capable of shielding X-rays without reducing cooling efficiency and provide an X-ray imaging device in which the X-ray tube device is installed, a device is equipped with: a cathode (211) which discharges an electron beam; an anode (212) which, by the electron beam colliding therewith, emits X-rays from a focal point that is the collision point with the electron beam; a vacuum envelope (213) which houses the cathode (211) and the anode (212) in a vacuum atmosphere; a housing (220) which supports the vacuum envelope (213) along with a cooling medium; and an X-ray shield (500) which is provided between the vacuum envelope (213) and the housing (220) and blocks the X-rays emitted from the focal point, and which is provided along the direction of flow of the cooling medium.
Provided are an ultrasonic diagnostic device and an ultrasonic three-dimensional image generation method which are capable of providing an ultrasonic diagnostic device that generates a three-dimensional image which depicts interactions such as of scattering and absorption of light in a tissue or between different tissues so as to improve reality. This ultrasonic diagnostic device displays a three-dimensional image of an object on the basis of at least one volume data out of luminance volume data, blood flow volume data and elasticity volume data and comprises: a light source information setting unit which sets light source data representing light source properties that are set in a three-dimensional space; an optical property setting unit which sets optical properties of the volume data with respect to the light source; an illuminance calculation unit which calculates the illuminance of a position corresponding to coordinates of the volume data on the basis of the light source data and the optical properties and creates an illuminance volume data on the basis of the calculated illuminance; and a projection processing unit which generates the three-dimensional image from the illuminance volume data.
To provide an X-ray CT device, etc. which are capable of improving image quality even with low radiation exposure imaging by reducing artifacts that are generated around a high absorber on the image and image noises, a reconstruction operation device (221) sets the number of iterations of an iteration process for correcting projection data and calculates, as calibration factors, an adjustment factor (α) which adjusts an application rate of a noise reduction process (f1) and a signal intensity maintaining process (f2) that are included in the iteration process and a correction factor (β). The iteration process that includes the noise reduction process (f1) and signal intensity maintaining process (f2) is performed on the projection data on the basis of the number of iterations and the calibration factors (α, β), corrected projection data is created, and a CT image is reconstructed.
Provided is a diagnostic ultrasound apparatus equipped with an elasticity evaluation technology for which error due to tissue structure has been reduced. A diagnostic ultrasound apparatus for measuring the velocity of a shear wave propagating inside a subject using ultrasonic waves and evaluating the elasticity of the subject, wherein: a first ultrasonic wave is transmitted to and received from the subject to detect the position and size of the subject's tissue structure and automatically determine the measurement region excluding the tissue structure; a second ultrasonic wave is transmitted to the measurement region to generate a shear wave; and a third ultrasonic wave is transmitted to and received from the measurement region to measure the amount of displacement associated with the propagation of the shear wave and calculate the shear wave velocity using said amount of displacement.
Provided is a medical diagnosis device that further increases the reliability of measurement results on the basis of an image of a subject. The medical diagnosis device is characterized by being provided with: an image generation unit (106) that generates an image (330) of a subject; an auxiliary information generation unit (164) that generates auxiliary information (1642) on the basis of input from an operation unit (108); a measurement computation unit (120) that computes a measurement position using the image (330) generated by the image generation unit (106), the auxiliary information (1642), and measurement conditions (1522), and computes measurement values using the image (330) generated by the image generation unit (106) and the computed measurement position; and a display unit (132) that displays the image (330) generated by the image generation unit (106), the input position information (1622), and the measurement value computed by the measurement computation unit (120).
Provided is a simple ultrasound diagnostic equipment operation device capable of ensuring flexibility of movement. The operation device is provided with a body (11) having an operating tool for providing prescribed instructions to ultrasound diagnostic equipment, and a mounting part (13) disposed on the body (11). The mounting part (13) has a ring shape that enables the mounting part to be inserted in or hooked on the body or a part of clothing of an operator. In addition, a disc part (12) that holds a coupling structure for coupling with a probe or the like can be provided. The operating tool can be disposed on the disc part (12) separately to the body (11). The operation device is connected to the ultrasound diagnostic equipment in a wired or wireless fashion.
In order to provide a medical imaging system which is provided with a bed that is capable of maintaining a subject's safety, a medical imaging system (200) according to an embodiment of the present invention comprises a top plate (12) on which a subject is placed, a drive screw shaft (52) and a fall prevention part (300). The fall prevention part (300) comprises: a load support nut (56) which is in threaded engagement with the drive screw shaft (52) and onto which the load of the top plate (12) is applied; a fall prevention nut (58) which is disposed below the load support nut (56) and is in threaded engagement with the drive screw shaft (52); a rotation prevention mechanism (55) which prevents rotation of the load support nut (56); and a detent mechanism (57) which prevents the fall prevention nut (58) from turning and in which, when the threaded engagement between the drive screw shaft (52) and the load support nut (56) is disconnected, the detent of the fall prevention nut (58) is released. Additionally, when the threaded engagement between the drive screw shaft (52) and the load support nut (56) is disconnected, the detent of the fall prevention nut (58) is released whereby the fall prevention nut (58) rotates along with the rotation of the drive screw shaft (52).
Provided are: an ultrasound diagnostic equipment probe that enables various functions to be optionally added and removed according to the requirements of an operator, while maintaining a compact ultrasound probe form; and a probe system that uses the ultrasound diagnostic equipment probe. This probe (10) is provided with: a head part that has a plurality of ultrasonic transducers built in, and is provided with a circular or spherical contact surface that comes into contact with a subject; and a cylindrical body part that is contiguous with the head part. The probe is further provided with a connector that connects other modules to the contact surface of the head part and/or an end section of the cylindrical body part. A module such as an operating module (50) or an elastography module (30) has a structure that can be connected to the connector of the probe, and is connected to the probe as necessary, and used as a probe system.
Provided is an ultrasound probe that enables the probe and equipment to be wirelessly and stably operated in parallel, while maintaining a compact ultrasound probe form. The ultrasound diagnostic equipment probe (100) is provided with: a probe part (10) having a head section (11) provided with a plurality of ultrasonic transducers, and a gripping section (15) connected to the head section; an operating part (20) provided with an operating tool for sending signals required for operations to ultrasound diagnostic equipment; and a coupling structure that has a cable (30) connecting the probe part (10) and the operating part (20), and removably integrates the gripping section (15) of the probe part and the operating part (20). The probe part and the operating part (20) can be used similarly to probes of the prior art when coupled, and the probe part can be used as a probe even when separated.
Provided are an ultrasonic imaging device and an ultrasonic image display method which can prevent flickering of a three-dimensional ultrasonic image caused by calculation of an inappropriate ROI to improve the quality of the ultrasonic image. This ultrasonic imaging device comprises: an ROI calculation unit which calculates an ROI from ultrasonic image data; a determination unit which determines success and failure of the ROI calculation on the basis of a place of a predetermined brightness difference and/or the number of places of the brightness difference in the ultrasonic image data; and a compensation unit which compensates a failed ultrasonic image based on the ROI that was determined as failed by the determination unit with a successful ultrasonic image based on the ROI that was determined as successful by the determination unit.
[Problem] To simplify an image alignment process and shorten the process time thereof. [Solution] The present invention performs an alignment process of an ultrasonic image (US image) generated on the basis of a reflected echo signal of a tomographic plane of a subject that is received by an ultrasonic probe and a reference image (R image) imaged with another image diagnostic device to display the images on a display screen (22) of an image display unit, saves multiple results of the alignment process together with alignment data and captured images (20), lists the saved captured images (20) on the display screen (22), and when one of the displayed captured images (20) is selected, performs the alignment process by the alignment data for the captured image (20) provided with a selection mark (21).
An inclined-magnetic-field generating device (3) of an MRI device has at least a pair of conductor rings (5) provided in an arrangement region which is an inside part of the inclined-magnetic-field generating device (3), an end-part side of the inclined-magnetic-field generating device (3) in a homogeneous magnetic field direction, and outside of inclined-magnetic-field generating sources (3a, 3b) in the radial direction of a static-magnetic-field generating source. In a cross-section where an at least single-turn coil pattern (341b) positioned in contiguity in the radial direction of the conductor ring (5) is cut in a plane including the radial direction and the homogeneous magnetic field direction (z-axis direction), a dimension in the radial direction is smaller than a coil pattern (342b) of another turn of the same coil as the at least single turn, and a dimension in the homogeneous magnetic field direction is larger. Through this configuration, an MRI device having an inclined-magnetic-field generating device is provided whereby degradation of a tomographic image can be suppressed while leakage magnetic fields are reduced, and whereby wall thickness is reduced, short axis is lengthened in the case of a horizontal-magnetic-field-type device, and the radial-direction dimension is shortened in the case of a vertical-magnetic-field-type device.
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
G01R 33/385 - Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field coils
68.
IMAGE PROCESSING DEVICE, RADIOGRAPHY DEVICE, AND IMAGE PROCESSING METHOD
An image processing device or radiography device for creating an image using output data from a detector for detecting radiation that passes through a test object, wherein artifacts due to offset between an estimated output value and a true output value are reduced when estimating the output value of a defective pixel of the detector. Rather than correcting only the output of a defective pixel, the output of surrounding normal pixels used to correct the defective pixel is corrected by blur processing. The presence of blur processing or degree of blur processing of the surrounding normal pixels is also adjusted through use of a condition such as a device condition or an imaging condition.
In order to provide an X-ray imaging apparatus that enables an operator to recognize an X-ray irradiation range via a visible light irradiation region, even if an X-ray source is positioned below a subject: an X-ray irradiation range display unit, which emits visible light showing the range of X-rays radiated by an X-ray generation unit towards a subject, is disposed on an X-ray detection unit, and a second X-ray irradiation range display unit, which emits visible light showing the range of X-rays radiated by the X-ray generation unit towards the subject, is disposed on the X-ray generation unit. Even if the X-ray generation unit has an under tube disposed below the subject, the X-ray irradiation range display unit radiates visible light on top of the subject, showing the X-ray irradiation range on top of the subject.
To facilitate positioning operation that is necessary for X-ray imaging, a mobile X-ray device (1) comprises: an X-ray source (40) which is supported in a raisable and lowerable manner; an ultrasonic distance measurement unit (90) which measures the distance from the X-ray source (40) to an object subject to the distance measurement that is positioned below the X-ray source; and a control unit (12) and a braking unit (80) which compare a focus-image reception face distance that indicates the distance from the X-ray source (40) to an X-ray detector (4) and a measurement value obtained by measurement by the ultrasonic distance measurement unit (90) and on the basis of the result of comparison apply braking to the raising and lowering movement.
Provided is an ultrasonic diagnosis device that can measure hardness information of a subject at a high temporal resolution and spatial resolution. The present invention is provided with an ultrasonic probe (1) and a displacement generation unit (10) that causes the interior of a subject to be displaced. A displacement detection ultrasonic beam is transmitted from the ultrasonic probe (1) to a plurality of detection positions of the subject, and using the reflected signal detected by a detection unit (20), a control unit (3) detects a shear wave speed on the basis of the displacement of the plurality of detection positions, and outputs hardness information of the subject. The displacement detection ultrasonic beam is transmitted to one of the plurality of detection positions, the waveform analysis unit (26) of the control unit (3) analyzes the shear wave arising by means of the displacement, and performs switching control in a manner so that the displacement detection ultrasonic beam is transmitted to another one of the plurality of detection positions. As a result, it is possible to measure shear wave speed at a greater spatial resolution and temporal resolution, and it is possible to obtain hardness information of a subject at a high precision.
In order to provide an X-ray detector and X-ray CT device that make the alignment of a collimator plate easy, said X-ray detector and X-ray CT device are characterized by the provision of the following: a radiation-detecting-element array in which a plurality of radiation-detecting elements that detect radiation produced by a radiation source are arrayed in a first direction and a second direction that is perpendicular thereto; a collimator plate that is aligned in the first direction on the radiation-source-side of the radiation-detecting-element array and gets rid of scattered radiation; and collimator-plate support parts that are aligned in the second direction between radiation-detecting elements and have grooves that support the collimator plate.
In the present invention, in order to reduce errors in assessment of a structure due to noise, and to remove noised superimposed on an image while retaining significant information and without introducing artificiality into a resultant image after noise removal, a reference image created from a plurality of source images and each source image are compared to compute a degree of similarity, and the degree of similarity is used as an index for noise determination. The source images are smoothed and synthesized using the index, and a final image is obtained from which noise has been removed.
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 6/00 - Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
A61B 8/00 - Diagnosis using ultrasonic, sonic or infrasonic waves
74.
IMAGE PROCESSING DEVICE AND REGION EXTRACTION METHOD
In order to provide an image processing device, region extraction method, and image processing method capable of extracting a target region on the basis of minute variations in a concentration value which exist in localized fashion, and of clearly displaying the extracted target region, an image processing device (100) extracts a blood vessel region (A) from an image and extracts a region in which a CT value is smaller than the average concentration value of the blood vessel region (A) as a soft plaque region (B). For unextracted soft plaque, a pixel pair is set in a difference region between the blood vessel region (A) and the soft plaque region (B), and for each pixel (Pj) of the pixel pair, a determination is made as to whether the pixel value is even smaller than a value slightly smaller than the CT value of the pixel pair. A portion in which there is localized slight variation in pixel values is thereby extracted as soft plaque.
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
75.
MEDICAL IMAGE DATA MANAGEMENT SYSTEM, MEDICAL IMAGE DATA MANAGEMENT DEVICE, AND MEDICAL IMAGE DATA MANAGEMENT PROGRAM
Provided is a technology whereby the conditions for deleting medical image data from an internal storage device of a medical image data management system are dynamically updated according to usage of the medical image data. A medical image data management system according to the present invention comprises a first storage unit which stores medical image data and a second storage unit which is connected over a network to the first storage unit. On the basis of the records of transmission and reception of the medical image data between the first storage unit and the second storage unit, the conditions for deleting the medical image data from the first storage unit are updated.
G16H 10/60 - ICT specially adapted for the handling or processing of patient-related medical or healthcare data for patient-specific data, e.g. for electronic patient records
A61B 5/00 - Measuring for diagnostic purposes ; Identification of persons
To provide an X-ray CT device and an image reconstruction method which are capable of creating an image in which influence of movement of a site to be imaged is reduced, an image processing device (403) of an X-ray CT device (1) calculates a reconstruction data range which is the range of projection data used for reconstruction on the basis of a movement direction of a site to be imaged. An image is reconstructed using the projection data of the calculated reconstruction data range. The reconstruction data range is the projection data of the projection range of at least 180 degrees that includes a projection direction which substantially matches the movement direction of the site to be imaged. Since the image is reconstructed using the projection data of the range such that influence of the movement direction of the site to be imaged is minimal, an image with less motion artifacts can be obtained.
Multi-echo imaging using refocusing RF pulses not only of 180 degrees, whereby high-quality images in which unnecessary contrast is reduced and the intended contrast is emphasized are obtained. For that purpose, imaging parameters are adjusted to reduce unnecessary contrast. Adjustment is carried out such that, among echo signals from multiple tissues having different relaxation times, the signal strengths of the echo signals that determine contrast, such as the echo signal of the k-space center, converge for echo signals from tissues for which the relaxation time producing the intended contrast is the same. The imaging parameters to be adjusted include the repetition time, DE pulse FA, saturation pulse FA, saturation pulse application timing, application strength of gradient magnetic field during recovery time, and application timing.
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
A survey meter (10), which is a radiation meter, has three sections: a main unit (12), a detecting unit (14), and a joint (18). The joint (18) has a lower side (56) disposed adjacent to the detecting unit (14), and an upper side (54) located so that a space is opened to the lower side (56). The main unit (12) is detachable with respect to the upper side (54). When the main unit (12) and detecting unit (14) are unified by way of the joint (18), the survey meter (10) can be held by gripping a grip (48) on the main unit (12) and the upper side (54) together, and measurements can be performed with one hand. When the main unit (12) is removed from the joint (18), measurements can be performed with both hands by holding the main unit (12) with one hand and the detecting unit (14) with the other hand.
Provided is a magnetic resonance imaging device which is capable of displaying more accurately images that indicate the condition of tissues such as water or fat. To that end, a signal processing unit (110) processes the signal of each pixel of a first image (506) created on the basis of NMR signals for each pixel of the first image (506) in turn to generate a second image (509), and determines the order in which to process unprocessed pixels of the first image (506) by preferentially selecting an unprocessed pixel with greater signal strength among unprocessed pixels, for which multiple processes have not been performed, adjoining the processed pixels that are already processed of the first image (506).
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
80.
MAGNETIC RESONANCE IMAGING DEVICE AND MEASUREMENT METHOD THEREOF
Provided is a magnetic resonance imaging device which acquires spectral data for which influence of contaminated signals from outside of a volume of interest is reduced. To that end, this magnetic resonance imaging device acquires a first echo signal generated by a subject in a state in which a gradient magnetic field generation means generates a gradient magnetic field in one polarity, acquires a second echo signal generated by the subject in a state in which the gradient magnetic field generation means generates a gradient magnetic field in another polarity which is the opposite polarity to the one polarity, and creates a graph that indicates a state of metabolites from both the first echo signal and the second echo signal.
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
Through the present invention, an error between projection and back projection in CT image generation is reduced. The CT image generation device according to the present invention is provided with: an X-ray scanner provided with an X-ray source and a detector; a storage module including a detector data block, a weighting data block, and a parameter data block; and a processor module including a main processor, a weighting calculation unit, a weighting vector multiplication unit, and a separable footprint computation unit. A scanner stores scanned data as detector data in the detector data block, the weighting calculation unit acquires a geometry parameter from the parameter data block and calculates a weighting vector, and the main processor controls a projection/back projection angle loop using the geometry parameter. The weighting vector multiplication unit multiplies the detector data by a weighting vector and acquires a corrected detector value, and the separable footprint computation unit executes a separable footprint projection/back projection algorithm using the corrected detector value.
In order to provide an X-ray CT device whereby the computing time required for an iterative approximate projection data correction process is shortened by applying the iterative approximate projection data correction process over a limited range, and whereby it is possible to generate low-noise images according to the purpose of scanning, a first computing unit (202) of the X-ray CT device (1) performs an iterative approximate projection data correction process of projection data obtained through imaging, to create corrected projection data, and uses the corrected projection data to reconstruct a CT image. The computing unit (202) determines a range for application of the iterative approximate projection data correction process, doing so on the basis of imaging parameters, reconstruction parameters, and the like. For example, a slice direction application range is determined on the basis of X-ray beam width, and a channel direction application range is determined on the basis of FOV. The computing unit (202) performs the iterative approximate projection data correction process on projection data corresponding to the application ranges so determined, and creates corrected projection data.
In order to provide a medical image diagnostic device wherein body position setting can be performed easily with few operations, and in a manner such that the direction and the positional relationship of an image capture device relative to a subject are easy to understand, reference location selection objects (5a-5h) are displayed in a plurality of positions together with an image (3A) for body position setting. The image for body position setting indicates the positional relationship of an image capture device (10) and a subject, and the reference location selection objects indicate the position and the orientation of a subject reference location. In addition, if any of the positions of the reference location selection objects are selected, the body position corresponding to the selected object is set as an image capture condition. Furthermore, the display switches to the image for body position setting corresponding to the selected object. Such a method for setting the body position enables an operator to set the body position intuitively. Furthermore, the body position and the direction settings can both be set with one click.
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
84.
MEDICAL IMAGE PROCESSING DEVICE, AND MEDICAL IMAGE CAPTURE DEVICE
The purpose of the present invention is to provide a technology which can perform noise elimination on a three-dimensional image by using an isotropic three-dimensional adaptive filter. With respect to a medical image including a three-dimensional reconstructed image (40) of a subject, the present invention sets three-dimensional regions of interest (41a-41d) centred on target pixels, and detects the travelling directions of structures (42a-42c) present in the three-dimensional regions of interest on the basis of the distribution of pixel values included in the three-dimensional regions of interest. The present invention sets three-dimensional spatial filters, the shapes of which are aligned in the travelling directions of the structures, or if there is no structure, sets a three-dimensional smoothing filter which does not take structural shapes into account, and performs noise elimination processing on the three-dimensional areas of interest by using the three-dimensional spatial filters.
Provided is a technique which, in ultrasound imaging using THI amplitude modulation, can obtain high-quality images by extracting with high accuracy only the non-linear component. The effect of electric distortion caused by analogue amplification on the echo signal of ultrasound of different sound pressure levels is made approximately equivalent, the fundamental wave component is removed with high accuracy and only the non-linear component is extracted with high accuracy. The aforementioned effect can be made equivalent by controlling the gain of the amplifier unit, for example. The effect can also be made equivalent by repairing digital data by means of a filter.
The purpose of the present invention is to improve measurement accuracy by reducing the resolution difference in one reconfiguration image generated using a flying focal spot (FFS) method, said resolution difference being dependent on imaging position. This X-ray CT device interpolates missing data in projection data obtained using an FFS method, by: performing view-direction-interpolation processing in which actual data arranged along an angular direction of rotational movement is used in the projection data; and performing channel-direction-interpolation processing in which actual data arranged along a channel direction is used in the projection data. Accordingly, a reconfiguration image is generated in which the contribution ratio of the projection data subjected to view-direction-interpolation processing and the contribution ratio of the projection data subjected to channel-direction-interpolation processing differ in accordance with the position of pixels in the reconfiguration image.
A personal dosimeter comprises a main body provided with a radiation detector, and an attachment mechanism detachably mounted to the main body. The main body has a right end part and a left end part. The attachment mechanism has a right mounting member and a left mounting member. In a state in which the attachment mechanism is mounted to the main body, the right end part is surrounded by the right mounting member, and the left end part is surrounded by the left mounting member. Consequently, it is possible to firmly join the attachment mechanism to the main body. The attachment mechanism has a clip member. The clip member comprises a pressing bar, and two arms for holding the pressing bar. A cloth or the like is put between the pressing bar and the front surface of the main body. An impact from the front is softened by the clip member.
An objective of the present invention is, with a magnetic resonance imaging device which emits a gradient magnetic field with parallel driving of positive-side subcoils and negative-side subcoils with different power sources in the gradient magnetic field direction, to detect with good precision a misalignment in drive timing of the positive side and the negative side without employing an additional device. Pulse sequences for timing misalignment detection of a plurality of types having a slice gradient magnetic field pulse (201) and a read-out gradient magnetic field pulse (206) in the same direction as a gradient magnetic field of interest are executed. A positive-side slice echo and a negative-side slice echo of the gradient magnetic field are photographed. A phase difference between a positive-side projection image and a negative-side projection image is derived by computation with phase error from other factors being removed. From the slope of the phase difference with respect to a location, the drive timing misalignment between the positive-side subcoil and the negative-side subcoil of the gradient magnetic field emission is detected.
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
G01R 33/385 - Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field coils
Provided is an ultrasonic diagnostic device the operational convenience of which can be improved by identifying movement of a probe and executing a command that is associated with the movement of the probe. This ultrasonic diagnostic device comprises a probe which sends and receives ultrasonic waves to and from a subject, an identification part which identifies the movement of the probe, and a control part which executes a command that is associated with the movement of the probe.
A received signal is obtained along an ultrasonic beam while the ultrasonic beam which passes through the measurement area is moved in periodic fashion inside the measurement area. A sampling processing unit (20) uses a plurality of sampling sets mutually offset in time phase, and samples received signals across a plurality of time phases for each sampling set to thereby obtain a received data string for each sampling set. Doppler information in the measurement area is then obtained on the basis of the plurality of received data strings that correspond to the plurality of sampling sets.
An evaluation value calculation unit (50) evaluates a degree of phasing on the basis of a plurality of received-wave signals obtained from a delay processing unit (30) to thereby calculate a two-dimensional evaluation value related to a two-dimensional array of a plurality of oscillating elements (12). The evaluation value calculation unit (50) obtains a two-dimensional evaluation value of an xy plane from a one-dimensional evaluation value in the x direction and a one-dimensional evaluation value in the y direction. A multiplication unit (60) multiplies the two-dimensional evaluation value and the received beam outputted from an addition processing unit (40) to adjust the gain of the received beam. Unnecessary signal components are thereby reduced.
Provided is an ultrasonic imaging device capable of compensating for degradation of image quality due to inhomogeneity of a medium under test. A reception beam former (108) synthesizes a signal received by an ultrasonic element array (105) after performing phasing processing of the signal in each of two or more steering directions. The two or more steering directions are designated by a steering direction designation unit (112). The two or more steering directions include two directions forming a predetermined angle on each of the right and left along the arrangement direction of the ultrasonic element array, with respect to the direction of reception focusing. The predetermined angle is preferably a null angle.
Provided is an ultrasonic diagnostic device that performs velocity measurement in which the impact of the wavefront characteristics and scattering that accompany the propagation of shear waves is lessened. Burst waves which are first ultrasonic waves and are from a probe (11) and an ultrasonic wave transmission and reception unit (13) are transmitted to a subject and radiation pressure is imparted. The displacement of a medium within the subject that accompanies the propagation of shear waves generated in the subject by the radiation pressure is detected by transmission to the subject and reception by the subject of track pulse waves which are second ultrasonic waves. Using reception data from the ultrasonic wave transmission and reception unit (13), an elasticity evaluation unit (17) of a controller (12) measures a first arrival time of a shear wave in a first depth and a second arrival time of a shear wave in a second depth according to a single track pulse wave having a prescribed angle Ɵ (≠0) with respect to the depth direction of the subject, calculates the propagation speed of the shear wave on the basis of the difference between the first arrival time and the second arrival time, and displays the elasticity information of the subject on a display unit (15).
Provided is an ultrasonic imaging device whereby a cable does not drag on the floor during examination or when not in use, excessive force is not applied to the cable during examination, a probe can be smoothly taken in and out, and the cable can be easily routed. This ultrasonic imaging device is provided with a cart part (10) for mounting an instrument body (30) of the ultrasonic imaging device, a table (20) for loading at least a portion of the instrument body, a table support mechanism, and a housing (40) for accommodating the support mechanism. A probe holder is provided on a side of the table (20). A base (11) of the cart part (10) has an ascending part (13) surrounding the external periphery of the housing (40) fixed to the base (11), and an accommodating recess (45) for accommodating a probe cable is formed between the ascending part and the external periphery of the housing (40).
In order to provide a technique for increasing the precision of separation of a cutaneous blood flow signal and a cerebral blood flow signal without increasing the burden on a user in the separation of signal components from a surface layer site using a TDD-ICA method in biological optical measurement, the present invention imparts a plurality of candidate delay times to pre-acquired data having a short SD distance and data having a long SD distance. The present invention is also provided with an analysis unit (410) for calculating a separation degree indicating the degree of separation of a cutaneous blood flow signal after separation by the TDD-ICA method for each imparted candidate delay time, a delay time determination unit (420) for determining the optimum delay time in accordance with the separation degree, and a display data generation unit (430) for generating display data for displaying a comparison in a display unit (142) of a waveform prior to separation, the waveform of the cerebral blood flow signal after separation, and the waveform of the cutaneous blood flow signal during display of results separated using the determined delay time.
A61B 10/00 - Other methods or instruments for diagnosis, e.g. for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
A61B 5/1455 - Measuring characteristics of blood in vivo, e.g. gas concentration, pH-value using optical sensors, e.g. spectral photometrical oximeters
96.
GRADIENT MAGNETIC FIELD COIL DEVICE AND MAGNETIC RESONANCE IMAGING DEVICE
A gradient magnetic field coil device (2) has a main coil device (3) shaped by embedding a plurality of main coils (3z) for generating a gradient magnetic field and a leakage magnetic field in a first resin (3a), and a shield coil device (4) shaped by embedding a plurality of shield coils (4z) for suppressing the leakage magnetic field in a second resin (4a), the shield coil device (4) is provided with a facing region (A1) facing the main coil device (3) and fixed to the main coil device (3), and a protruding region (A2) protruding from the main coil device (3), and an insulating reinforcing material (5) is embedded in the second resin (4a) in the protruding region (A2). A plurality of the reinforcing material (5) are arranged in the circumferential direction of the shield coil device (4), and the second resin (4a) is preferably filled in between reinforcing materials (5) that are adjacent to each other. The reinforcing materials (5) are preferably arranged on the main coil device (3) side with respect to the shield coils (4z).
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
97.
ULTRASOUND DIAGNOSTIC DEVICE AND ELASTICITY ANALYSIS METHOD
Provided are an ultrasound diagnostic device and an elasticity analysis method whereby it is possible to analyze a region in an elasticity image which is suited to analysis. An ultrasound diagnostic device comprises: a tomographic image construction unit (24) which constructs a tomographic image of a diagnostic site of a subject via an ultrasound probe; an elasticity information computation unit (34) which computes elasticity information which denotes hardness; an elasticity image construction unit (36) which constructs an elasticity image on the basis of the elasticity information which is computed in the elasticity information computation unit (34); an image display unit (28) which displays the tomographic image and the elasticity image; an analysis region detection unit (50) which detects an analysis region, wherein the elasticity information is analyzed, from distribution information of the elasticity information which constructs the elasticity image; and an analysis unit (52) which analyzes the elasticity information corresponding to the analysis region.
In order to reduce processing load on an image display device, an image data transmission system (1) is provided with: a medical image generation device 2) for transmitting medical image data having image-accompanied information and image identity information to a network (5); an image display device (3) for receiving the image-accompanied information transmitted to the network (5); a memory device (4) for receiving the image-accompanied information and image identity information transmitted to the network (5); an image data acquiring unit (34) for requesting transmission of the image identity information to the memory device (4) using the received image-accompanied information, receiving the image identity information transmitted to the network (5) in accordance with the transmission request, and acquiring the received image identity information and medical image data formed from the image-accompanied information, the image data acquiring unit (34) being provided to the image display device (3); and an image data transmission unit (41) for transmitting the image identity information that corresponds to the transmission-requested image-accompanied information to the network (5), the image data transmission unit (41) being provided to the memory unit (4).
G16H 10/60 - ICT specially adapted for the handling or processing of patient-related medical or healthcare data for patient-specific data, e.g. for electronic patient records
99.
X-RAY HIGH-VOLTAGE DEVICE AND X-RAY CT DEVICE USING SAME
Provided is an X-ray high-voltage device that is capable of improving the power factor of an inverter circuit with respect to the stray capacitance of a closed circuit between the secondary winding of a high-voltage transformer and the input terminals of a high-voltage rectifier. This X-ray high-voltage device comprises: a converter circuit (2) that converts an alternating-current voltage of an alternating-current power source having a commercial frequency into a direct-current voltage; an inverter circuit (3) that converts the direct-current voltage converted by the converter circuit (2) into a high-frequency alternating-current voltage having a higher frequency than the commercial frequency; a high-voltage transformer (4) that boosts the voltage of the high-frequency alternating-current voltage converted by the inverter circuit (3) to a high-frequency high alternating-current voltage; a high-voltage rectifier (6) that rectifies the high alternating-current voltage boosted by the high-voltage transformer (4) into a high direct-current voltage; an X-ray tube (8) to which the high direct-current voltage rectified by the high-voltage rectifier (6) is supplied; and an inductive load (resonant inductance) (5) that is connected between the input terminals of the high-voltage rectifier (6), and that reduces the lead in the phase of the current with respect to that of the voltage caused by the stray capacitance of the secondary winding of the high-voltage transformer (4) and other stray capacitors (42) that look parallel to said capacitance.
An ultrasonic imaging device that detects, during ultrasonic imaging, periodic shape changes in living tissue and, from that change information, precisely measures speed information about fluid flowing inside the living tissue as well as pressure fluctuation and absolute pressure inside the living tissue. A signal processing unit in an ultrasonic diagnostic device comprises: an elliptical shape detection unit that detects detection data about elliptical shapes included in an inspection target; and an elliptical shape arithmetic calculation unit that performs arithmetic calculations on the basis of the elliptical shapes. The elliptical shape detection unit: analyzes the elliptical shapes on the basis of chronological imaging data extracted as an elliptical shape of the living tissue, e.g., by capturing the diagonal cross section of a blood vessel; and calculates temporal changes in the long axis and short axis thereof, temporal changes in the aspect ratio, or temporal changes in the blood vessel cross sectional area, etc. The elliptical shape arithmetic calculation unit: uses these elliptical shape temporal changes or, if necessary, correction information from outside; calculates the speed of pulse waves propagated through the blood vessels, arterial pressure changes, and arterial pressure; and displays these as further processed diagnosis information, on a display unit.
