An apparatus (200, 300, 600, 900) for providing a B0 magnetic field for a magnetic resonance imaging system (100, 700). The apparatus (200, 300, 600, 900) includes at least one permanent B0 magnet (122, 210, 910) to contribute a magnetic field to the B0 magnetic field for the MRI system (100, 700) and a ferromagnetic frame (220) configured to capture and direct at least some of the magnetic field generated by the B0 magnet (122, 210, 910). The ferromagnetic frame (220) includes a first post (222a, 922) having a first end (223a) and a second end (223b), a first multi-pronged member (224a, 924) coupled to the first end (223a), and a second multi-pronged member (224b, 924) coupled to the second end (223b), wherein the first and second multi-pronged members (224a, 224b, 924) support the at least one permanent B0 magnet (122, 210, 910).
00 magnetic field for a magnetic resonance imaging (MRI) system, the assembly comprising: a plurality of rods extending along a common longitudinal direction and positioned to form a bore extending along the common longitudinal direction, the plurality of rods including a first rod, the first rod comprising: ferromagnetic segments, each having a net magnetization in a plane that is substantially perpendicular to the common longitudinal direction; and non-ferromagnetic segments.
Systems and methods for automated assembly of a BO magnet assembly (402) for use in a point-of-care 1100 system are provided herein. A gripper (422) capable of gripping a permanent magnet (10) with a high clamping force is provided for positioning the permanent magnet (10) in the B0 magnet assembly (402) in accordance with a permanent magnet layout (232). A robot (406) having multiple degrees of freedom is provided for positioning the gripper (422). Components of the system described herein have been developed to withstand the effects of strong magnetic forces generated by high-strength magnetic fields surrounding the B0 magnet assembly (402).
G01R 33/38 - Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
G01R 33/383 - Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using permanent magnets
B23P 19/04 - Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformationTools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
Techniques for suppressing noise in an environment of a magnetic resonance (MR) imaging system having at least one primary coil and at least one auxiliary sensor. The techniques involve estimating a transform, that, when applied to noise received by the at least one auxiliary sensor, provides an estimate of noise received by the at least one primary coil. The transform is estimated from data obtained by the at least one primary coil and the least one auxiliary sensor, with the data being weighted prior to estimation to remove or suppress data in regions with a high signal to noise ratio. In turn, the estimated transform may be applied to noise measured by the at least one auxiliary sensor during imaging of a patient, to estimate and suppress noise present in the MR signals received by the at least one primary coil during imaging.
Described herein are techniques for displaying medical images on a first device by using information received from a second device different from the first device and at least one computer different from the first device and the second device. The method comprises: using at least one computer hardware processor of the first device to perform: obtaining, from the second device via at least one communication network, a uniform resource locator (URL) indicating a first plurality of parameters associated with a first view of medical image data for a subject; obtaining, from the at least one computer via the at least one communication network, the medical image data for the subject; after obtaining the URL and the medical image data for the subject: displaying a second view of the medical image data on the display of the first device using the first plurality of parameters indicated by the URL.
A device and method for detecting motion and position of a patient positioned within a magnetic resonance imaging system, the device including at least one sensor configured to be capacitively coupled to the patient during magnetic resonance imaging. The method includes, while a patient is positioned within a magnetic resonance imaging system, measuring a reflected power value indicative of an amount of power reflected by the at least one sensor in response to being driven by at least one RF signal, and determining, using the reflected power value, whether the patient has moved.
Techniques for generation of three-dimensional (3D) medical images. The techniques include: receiving, via at least one communication network, image data obtained by at least one medical imaging device; generating, using ray tracing, the 3D medical image based on the image data obtained by the at least one medical imaging device; and outputting the 3D medical image.
G06F 3/0481 - Interaction techniques based on graphical user interfaces [GUI] based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance
A method of operating a low-field magnetic resonance imaging (MRI) system, the method comprising: obtaining an initial set of k-space phase-encoding coordinates; generating a sampling path through at least some of the k-space phase-encoding coordinates in the initial set to mitigate impact of eddy currents on operation of the low-field MRI system; and operating the low-field MRI system using a pulse sequence in accordance with the sampling path to obtain spatial frequency data for generating one or more magnetic resonance (MR) images of a subject.
A magnetic resonance (MR) imaging system, comprising a magnetics system having a plurality of magnetics components configured to produce magnetic fields for performing magnetic resonance imaging, and a sensor configured to detect electromagnetic interference conducted by a patient into an imaging region of the MR imaging system. The sensor may comprise at least one electrical conductor configured for electrically coupling to the patient. The MR imaging system may further comprise a noise reduction system configured to receive the electromagnetic interference from the sensor and to suppress electromagnetic interference in detected MR signals received by the MR imaging system based on the electromagnetic interference detected by the sensor.
Techniques for compensating for presence of eddy currents during the operation of a magnetic resonance imaging (MRI) system in accordance with a pulse sequence, the pulse sequence comprising a gradient waveform associated with a target gradient field. The techniques include: compensating for presence of eddy currents during operation of the MRI system at least in part by correcting the gradient waveform using a nonlinear function of a characteristic of the gradient waveform to obtain a corrected gradient waveform; and operating the MRI system in accordance with the corrected gradient waveform to generate the target gradient field.
Provided herein are systems, devices, and methods to facilitate imaging an infant using a magnetic resonance imaging (MRI) device. A system for facilitating imaging an infant using an MRI device is provided herein, the system comprising a radio frequency (RF) coil assembly configured to be coupled to the MRI device and comprising a first RF coil configured to transmit RF signals during MRI and/or be responsive to MR signals generated during MRI and a helmet for supporting at least a portion of the infant' s head, and an infant support to support at least a portion of the infant' s body and configured to be coupled to the RF coil assembly. Further provided is an apparatus for coupling an infant support to an MRI device.
A61B 5/055 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fieldsMeasuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
Techniques are described for controlling components of a Magnetic Resonance Imaging (MRI) system with a single controller, such as a Field Programmable Gate Array (FPGA), by dynamically instructing the controller to issue commands to the components using a processor coupled to the controller. According to some aspects, the controller may issue commands to the components of the MRI system whilst actively receiving commands from the processor to be later issued to the components.
Techniques for generating magnetic resonance (MR) images of a subject from MR data obtained by a magnetic resonance imaging (MRI) system, the techniques comprising: obtaining input MR spatial frequency data obtained by imaging the subject using the MRI system; generating an MR image of the subject from the input MR spatial frequency data using a neural network model comprising: a pre-reconstruction neural network configured to process the input MR spatial frequency data; a reconstruction neural network configured to generate at least one initial image of the subject from output of the pre-reconstruction neural network; and a post-reconstruction neural network configured to generate the MR image of the subject from the at least one initial image of the subject.
G01R 33/483 - NMR imaging systems with selection of signal or spectra from particular regions of the volume, e.g. in vivo spectroscopy
G01R 33/561 - Image enhancement or correction, e.g. subtraction or averaging techniques by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
G01R 33/565 - Correction of image distortions, e.g. due to magnetic field inhomogeneities
A61B 5/055 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fieldsMeasuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
G06K 9/36 - Image preprocessing, i.e. processing the image information without deciding about the identity of the image
G06K 9/52 - Extraction of features or characteristics of the image by deriving mathematical or geometrical properties from the whole image
According to some aspects, a system configured to facilitate imaging an infant using a magnetic resonance imaging (MRI) device is provided herein. The system comprises an infant-carrying apparatus comprising an infant support configured to support the infant and an isolette for positioning the infant relative to the MRI device, the isolette comprising: a base for supporting the infant-carrying apparatus; and a bottom surface configured to be coupled to the MRI device. In some embodiments, the infant-carrying apparatus further comprises at least one radio frequency (RF) coil coupled to the infant support and configured to be coupled to the MRI device to detect MR signals during imaging performed by the MRI device. A method for positioning an infant relative to an MRI device using an infant-carrying apparatus and isolette is further provided herein.
A61B 5/055 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fieldsMeasuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
An apparatus for controlling at least one gradient coil of a magnetic resonance imaging (MRI) system. The apparatus may include at least one computer hardware processor; and at least one computer-readable storage medium storing processor executable instructions that, when executed by the at least one computer hardware processor, cause the at least one computer hardware processor to perform a method. The method may include receiving information specifying at least one target pulse sequence; determining a corrected pulse sequence to control the at least one gradient coil based on the at least one target pulse sequence and a hysteresis model of induced magnetization in the MRI system caused by operation of the at least one gradient coil; and controlling, using the corrected gradient pulse sequence, the at least one gradient coil to generate one or more gradient pulses for imaging a patient.
A magnetic resonance imaging (MRI) system, comprising a magnetics system having a plurality of magnetics components configured to produce magnetic fields for performing magnetic resonance imaging, electromagnetic shielding provided to attenuate at least some electromagnetic noise in an operating environment of the MRI system, and an electrical conductor coupled to the electromagnetic shielding and configured to electrically couple to a patient during imaging of the patient by the MRI system. The magnetics system may include at least one permanent Bo magnet configured to produce a Bo magnetic field for an imaging region of the MRI system. The Bo magnetic field strength may be less than or equal to approximately 0.2 T.
Techniques for removing artefacts, such as RF interference and/or noise, from magnetic resonance data. The techniques include: obtaining (302) input magnetic resonance data using at least one radio-frequency coil (526) of a magnetic resonance imaging system (500); and generating (306) a magnetic resonance image from the input magnetic resonance data at least in part by using a neural network model (130) to suppress (304, 308) at least one artefact in the input magnetic resonance data.
Methods and apparatus for operating a low-field magnetic resonance imaging (MRI) system to perform diffusion weighted imaging, the low-field MRI system including a plurality of magnetics components including a Bo magnet configured to produce a low-field main magnetic field Bo, at least one gradient coil configured to, when operated, provide spatial encoding of emitted magnetic resonance signals, and at least one radio frequency (RF) component configured to acquire, when operated, the emitted magnetic resonance signals. The method comprises controlling one or more of the plurality of magnetics components in accordance with at least one pulse sequence having a diffusion- weighted gradient encoding period followed by multiple echo periods during which magnetic resonance signals are produced and detected, wherein at least two of the multiple echo periods correspond to respective encoded echoes having an opposite gradient polarity.
G01R 33/44 - Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
G01R 33/561 - Image enhancement or correction, e.g. subtraction or averaging techniques by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
G01R 33/563 - Image enhancement or correction, e.g. subtraction or averaging techniques of moving material, e.g. flow-contrast angiography
A system and method for operating a magnetic resonance imaging system including a magnetics system and a controller located in a same room as the magnetics system and communicatively coupled to at least one communication network. The method includes operating the magnetic resonance system to acquire at least one magnetic resonance image of a patient, and, in response to a triggering event, transmitting, via the at least one communication network, a message including metadata associated with acquisition of the at least one magnetic resonance image and/or results thereof to one or more recipients.
G16H 40/63 - ICT specially adapted for the management or administration of healthcare resources or facilitiesICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices for local operation
A61B 6/00 - Apparatus or devices for radiation diagnosisApparatus or devices for radiation diagnosis combined with radiation therapy equipment
G16H 30/20 - ICT specially adapted for the handling or processing of medical images for handling medical images, e.g. DICOM, HL7 or PACS
G16H 40/67 - ICT specially adapted for the management or administration of healthcare resources or facilitiesICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices for remote operation
20.
DEEP LEARNING TECHNIQUES FOR MAGNETIC RESONANCE IMAGE RECONSTRUCTION
A magnetic resonance imaging (MRI) system, comprising: a magnetics system comprising: a Bo magnet configured to provide a Bo field for the MRI system; gradient coils configured to provide gradient fields for the MRI system; and at least one RF coil configured to detect magnetic resonance (MR) signals; and a controller configured to: control the magnetics system to acquire MR spatial frequency data using non-Cartesian sampling; and generate an MR image from the acquired MR spatial frequency data using a neural network model comprising one or more neural network blocks including a first neural network block, wherein the first neural network block is configured to perform data consistency processing using a non-uniform Fourier transformation.
A61B 5/055 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fieldsMeasuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
G01R 33/561 - Image enhancement or correction, e.g. subtraction or averaging techniques by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
21.
METHODS AND APPARATUS FOR PATIENT POSITIONING IN MAGNETIC RESONANCE IMAGING
According to some aspects, a magnetic resonance imaging system capable of imaging a patient is provided. The magnetic resonance imaging system comprising at least one Bo magnet to produce a magnetic field to contribute to a Bo magnetic field for the magnetic resonance imaging system and a member configured to engage with a releasable securing mechanism of a radio frequency coil apparatus, the member attached to the magnetic resonance imaging system at a location so that, when the member is engaged with the releasable securing mechanism of the radio frequency coil apparatus, the radio frequency coil apparatus is secured to the magnetic resonance imaging system substantially within an imaging region of the magnetic resonance imaging system.
G01R 33/34 - Constructional details, e.g. resonators
A61B 5/055 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fieldsMeasuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
G01R 33/44 - Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
G01R 33/38 - Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
G01R 33/422 - Screening of the radiofrequency field
22.
0 MAGNET METHODS AND APPARATUS FOR A MAGNETIC RESONANCE IMAGING SYSTEM
Methods and apparatus for reducing noise in RF signal chain circuitry for a low-field magnetic resonance imaging system are provided. A switching circuit in the RF signal chain circuitry may include at least one field effect transistor (FET) configured to operate as an RF switch at an operating frequency of less than 10 MHz. A decoupling circuit may include tuning circuitry coupled across inputs of an amplifier and active feedback circuitry coupled between an output of the amplifier and an input of the amplifier, wherein the active feedback circuitry includes a feedback capacitor configured to reduce a quality factor of an RF coil coupled to the amplifier.
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
Goods & Services
Downloadable computer software for medical imaging and for
use with medical imaging equipment, namely, downloadable
computer software for analyzing, processing, and displaying
images on medical imaging machines. Medical devices and apparatus for medical imaging in the
field of diagnostics and treatment; medical diagnostic
imaging apparatus incorporating software.
25.
DEPLOYABLE GUARD FOR PORTABLE MAGNETIC RESONANCE IMAGING DEVICES
According to some aspects, an apparatus is provided comprising a deployable guard device, configured to be coupled to a portable medical imaging device, the deployable guard device further configured to, when deployed, inhibit encroachment within a physical boundary with respect to the portable medical imaging device. According to some aspects, an apparatus is provided comprising a deployable guard device, configured to be coupled to a portable magnetic resonance imaging system, the deployable guard device further configured to, when deployed, demarcate a boundary within which a magnetic field strength of a magnetic field generated by the portable magnetic resonance imaging system equals or exceeds a given threshold.
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
Goods & Services
Downloadable computer software for medical imaging and for
use with medical imaging equipment, namely, downloadable
computer software for analyzing, processing, and displaying
images on medical imaging machines. Medical devices and apparatus for medical imaging in the
field of diagnostics and treatment; medical diagnostic
imaging apparatus incorporating software.
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
downloadable computer software for medical imaging and for use with medical imaging equipment, namely, downloadable computer software for analyzing, processing, and displaying images on medical imaging machines Medical devices and apparatus for medical imaging in the field of diagnostics and treatment; medical diagnostic imaging apparatus incorporating software providing temporary use of non-downloadable computer software for medical imaging and for use with medical imaging equipment, namely, software for analyzing, processing, and displaying images on medical imaging machines
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
downloadable computer software for medical imaging and for use with medical imaging equipment, namely, downloadable computer software for analyzing, processing, and displaying images on medical imaging machines Medical devices and apparatus for medical imaging in the field of diagnostics and treatment; medical diagnostic imaging apparatus incorporating software providing temporary use of non-downloadable computer software for medical imaging and for use with medical imaging equipment, namely, software for analyzing, processing, and displaying images on medical imaging machines
29.
SYSTEMS AND METHODS FOR AUTOMATED DETECTION IN MAGNETIC RESONANCE IMAGES
Some aspects include a method of detecting change in degree of midline shift in a brain of a patient. While the patient remains positioned within the low-field magnetic resonance imaging device, acquiring first magnetic resonance (MR) image data and second MR image data of the patient's brain; providing the first and second MR data as input to a trained statistical classifier to obtain corresponding first and second output, identifying, from the first output, at least one initial location of at least one landmark associated with at least one midline structure of the patient's brain; identifying, from the second output, at least one updated location of the at least one landmark; and determining a degree of change in the midline shift using the at least one initial location of the at least one landmark and the at least one updated location of the at least one landmark.
According to some aspects, a low-field magnetic resonance imaging system is provided. The low-field magnetic resonance imaging system comprises a magnetics system having a plurality of magnetics components configured to produce magnetic fields for performing magnetic resonance imaging, the magnetics system comprising, a Bo magnet configured to produce a Bo field for the magnetic resonance imaging system at a low-field strength of less than.2 Tesla (T), a plurality of gradient coils configured to, when operated, generate magnetic fields to provide spatial encoding of magnetic resonance signals, and at least one radio frequency coil configured to, when operated, transmit radio frequency signals to a field of view of the magnetic resonance imaging system and to respond to magnetic resonance signals emitted from the field of view, a power system comprising one or more power components configured to provide power to the magnetics system to operate the magnetic resonance imaging system to perform image acquisition, and a power connection configured to connect to a single-phase outlet to receive mains electricity and deliver the mains electricity to the power system to provide power needed to operate the magnetic resonance imaging system. According to some aspects, the power system operates the low-field magnetic resonance imaging system using an average of less than 1.6 kilowatts during image acquisition.
A61B 5/055 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fieldsMeasuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
G01R 33/20 - Arrangements or instruments for measuring magnetic variables involving magnetic resonance
G01R 33/32 - Excitation or detection systems, e.g. using radiofrequency signals
G01R 33/34 - Constructional details, e.g. resonators
Some aspects comprise a tuning system configured to tune a radio frequency coil for use with a magnetic resonance imaging system comprising a tuning circuit including at least one tuning element configured to affect a frequency at which the radio frequency coil resonates, and a controller configured to set at least one value for the tuning element to cause the radio frequency coil to resonate at approximately a Larmor frequency of the magnetic resonance imaging system determined by the tuning system. Some aspects include a method of automatically tuning a radio frequency coil comprising determining information indicative of a Larmor frequency of the magnetic resonance imaging system, using a controller to automatically set at least one value of a tuning circuit to cause the radio frequency coil to resonate at approximately the Larmor frequency based on the determined information.
G01R 33/20 - Arrangements or instruments for measuring magnetic variables involving magnetic resonance
G01R 33/32 - Excitation or detection systems, e.g. using radiofrequency signals
G01R 33/36 - Electrical details, e.g. matching or coupling of the coil to the receiver
G01R 33/58 - Calibration of imaging systems, e.g. using test probes
H03J 3/12 - Electrically-operated arrangements for indicating correct tuning
H03J 3/24 - Continuous tuning of more than one resonant circuit simultaneously, the circuits being tuned to substantially the same frequency, e.g. for single-knob tuning
According to some aspects, a method of producing a permanent magnet shim configured to improve a profile of a B0 magnetic field produced by a B0 magnet is provided. The method comprises determining deviation of the B0 magnetic field from a desired B0 magnetic field, determining a magnetic pattern that, when applied to magnetic material, produces a corrective magnetic field that corrects for at least some of the determined deviation, and applying the magnetic pattern to the magnetic material to produce the permanent magnet shim. According to some aspects, a permanent magnet shim for improving a profile of a B0 magnetic field produced by a B0 magnet is provided. The permanent magnet shim comprises magnetic material having a predetermined magnetic pattern applied thereto that produces a corrective magnetic field to improve the profile of the B0 magnetic field.
G01R 15/00 - Details of measuring arrangements of the types provided for in groups , or
G01R 33/3873 - Compensation of inhomogeneities using ferromagnetic bodies
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
Aspects relate to providing radio frequency components responsive to magnetic resonance signals. According to some aspects, a radio frequency component comprises at least one coil having a conductor arranged in a plurality of turns oriented about a region of interest to respond to corresponding magnetic resonant signal components. According to some aspects, the radio frequency component comprises a plurality of coils oriented to respond to corresponding magnetic resonant signal components. According to some aspects, an optimization is used to determine a configuration for at least one radio frequency coil.
A61B 5/055 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fieldsMeasuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
G01R 33/20 - Arrangements or instruments for measuring magnetic variables involving magnetic resonance
G01R 33/32 - Excitation or detection systems, e.g. using radiofrequency signals
G01R 33/34 - Constructional details, e.g. resonators
An apparatus to provide power for operating at least one gradient coil of a magnetic resonance imaging system. According to some aspects, the apparatus comprises a plurality of power terminals configured to supply different voltages of a first polarity, and a linear amplifier configured to provide at least one output to power the at least one gradient coil to produce a magnetic field in accordance with a pulse sequence, the linear amplifier configured to be powered by one or more of the plurality of power terminals, wherein the one or more of the plurality of power terminals powering the linear amplifier is selected based, at least in part, on the at least one output.
G01R 33/3815 - Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using electromagnets with superconducting coils, e.g. power supply therefor
G01R 33/20 - Arrangements or instruments for measuring magnetic variables involving magnetic resonance
G01R 33/28 - Details of apparatus provided for in groups
G01R 33/32 - Excitation or detection systems, e.g. using radiofrequency signals
G01R 33/36 - Electrical details, e.g. matching or coupling of the coil to the receiver
G01R 33/38 - Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
35.
LOW FIELD MAGNETIC RESONANCE METHODS AND APPARATUS
According to some aspects a system is provided comprising a low-field magnetic resonance (MR) device, at least one electrophysiological device, and at least one controller configured to operate the low-field MR device to obtain MR data and to operate the at least one electrophysiological device to obtain electrophysiological data.
A61B 5/055 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fieldsMeasuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
A low-field magnetic resonance imaging (MRI) system. The system includes a plurality of magnetics components comprising at least one first magnetics component configured to produce a low-field main magnetic field B0 and at least one second magnetics component configured to acquire magnetic resonance data when operated, and at least one controller configured to operate one or more of the plurality of magnetics components in accordance with at least one low-field zero echo time (LF-ZTE) pulse sequence.
A61B 5/055 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fieldsMeasuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
37.
AUTOMATIC CONFIGURATION OF A LOW FIELD MAGNETIC RESONANCE IMAGING SYSTEM
In some aspects, a method of operating a magnetic resonance imaging system comprising a B0 magnet and at least one thermal management component configured to transfer heat away from the B0 magnet during operation is provided. The method comprises providing operating power to the B0 magnet, monitoring a temperature of the B0 magnet to determine a current temperature of the B0 magnet, and operating the at least one thermal management component at less than operational capacity in response to an occurrence of at least one event.
According to some aspects, a laminate panel is provided. The laminate panel comprises at least one laminate layer including at least one non-conductive layer and at least one conductive layer patterned to form at least a portion of a B0 coil configured to contribute to a B0 field suitable for use in low-field magnetic resonance imaging (MRI).
According to some aspects, a method of suppressing noise in an environment of a magnetic resonance imaging system is provided. The method comprising estimating a transfer function based on multiple calibration measurements obtained from the environment by at least one primary coil and at least one auxiliary sensor, respectively, estimating noise present in a magnetic resonance signal received by the at least one primary coil based at least in part on the transfer function, and suppressing noise in the magnetic resonance signal using the noise estimate.
In some aspects, a magnetic system for use in a low-field MRI system. The magnetic system comprises at least one electromagnet configured to, when operated, generate a magnetic field to contribute to a B0 field for the low-field MRI system, and at least one permanent magnet to produce a magnetic field to contribute to the B0 field.
According to some aspects, a thermal management component adapted to cool, when present, at least one component of a magnetic resonance imaging (MRI) system is provided. The thermal management component is adapted to reduce or eliminate eddy current production during operation of the MRI system. The thermal management component comprises at least one conduit configured to circulate coolant, and at least one thermally- conductive substrate coupled to the at least one conduit and configured to transfer heat from the at least one component to the coolant when circulated through the at least one conduit, wherein the at least one thermally-conductive substrate is configured to reduce or eliminate eddy current production
