Patent classifications
G01R33/34
DEVICES FOR MANIPULATING ELECTROMAGNETIC FIELDS
There is provided a method of producing a device for manipulating a magnetic field of RF radiation from one or more RF antenna in an MR system. The method comprises: determining a target resonance quality factor and/or a target resonant RF frequency of the device based on at least one characteristic of the one or more RF antenna; determining a design of the device to provide the device with the determined target resonance quality factor and/or target resonant RF frequency; and making the device in accordance with the design. The device comprises: a plurality of conductive elements arranged in an array, wherein the array is arranged to redistribute energy between electric and magnetic fields of the RF radiation at a resonant RF frequency when receiving the RF radiation, the RF radiation having an RF wavelength greater than a respective dimension of each conductive element; and a dielectric material, wherein the dielectric material has a dielectric permittivity and a loss tangent.
DEVICES FOR MANIPULATING ELECTROMAGNETIC FIELDS
There is provided a method of producing a device for manipulating a magnetic field of RF radiation from one or more RF antenna in an MR system. The method comprises: determining a target resonance quality factor and/or a target resonant RF frequency of the device based on at least one characteristic of the one or more RF antenna; determining a design of the device to provide the device with the determined target resonance quality factor and/or target resonant RF frequency; and making the device in accordance with the design. The device comprises: a plurality of conductive elements arranged in an array, wherein the array is arranged to redistribute energy between electric and magnetic fields of the RF radiation at a resonant RF frequency when receiving the RF radiation, the RF radiation having an RF wavelength greater than a respective dimension of each conductive element; and a dielectric material, wherein the dielectric material has a dielectric permittivity and a loss tangent.
COMFORTABLE MRI RECEIVER COIL SYSTEM CAPABLE OF SUPPORTING ULTRASOUND, DIAGNOSTIC, THERAPEUTIC, AND INTERVENTIONAL IMPLEMENTS
A wearable, open and pliable conforming MRI receiver coil system having an assembly of MRI imaging coils, each configured in a framework to simultaneously apply or position MRI receiver antennae and medical implements such as ultrasound transducers against the skull or skin of a patient. The system is configured to perform an MRI imaging and operation of the one or more medical implements simultaneously.
Superconducting Magnet for MRI System, and Processing Tool and Processing Method Therefor
A processing tool for a superconducting magnet of an MRI system is disclosed. The processing tool comprising a first winding part and a second winding part. The first winding part is used as a winding framework for winding a main coil half-body. The second winding part is used as a winding framework for winding a shield coil. The processing tool has an infusion cavity. The infusion cavity comprises a main coil accommodating zone, a shield coil accommodating zone, and a linking zone. The main coil accommodating zone is used for accommodating the main coil half-body wound on the first winding part. The shield coil accommodating zone is used for accommodating the shield coil wound on the second winding part. The main coil accommodating zone is connected to the shield coil accommodating zone via the linking zone. The processing tool helps to reduce the difficulty of superconducting magnet processing.
Superconducting Magnet for MRI System, and Processing Tool and Processing Method Therefor
A processing tool for a superconducting magnet of an MRI system is disclosed. The processing tool comprising a first winding part and a second winding part. The first winding part is used as a winding framework for winding a main coil half-body. The second winding part is used as a winding framework for winding a shield coil. The processing tool has an infusion cavity. The infusion cavity comprises a main coil accommodating zone, a shield coil accommodating zone, and a linking zone. The main coil accommodating zone is used for accommodating the main coil half-body wound on the first winding part. The shield coil accommodating zone is used for accommodating the shield coil wound on the second winding part. The main coil accommodating zone is connected to the shield coil accommodating zone via the linking zone. The processing tool helps to reduce the difficulty of superconducting magnet processing.
Systems and methods for data transmission in imaging system
Systems and methods for data transmission may be provided. The system may at least include a data transmission module. The system may obtain MR signals from one or more RF coils. The system may generate, via a first portion of the data transmitting module, first data based on the MR signals. The system may generate, via a second portion of the data transmitting module, second data based on the first data. The second portion of the data transmitting module may connect to the first portion of the data transmitting module wirelessly. The system may further store the second data in a non-transitory computer-readable storage medium.
Wide dynamic range magnetic field cycler and ultra portable optical nanodiamond hyperpolarizer
A system can include: a superconducting or permanent magnet; a high field portion corresponding to the superconducting or permanent magnet, wherein the high field has a range of 0.1-20 T; a low field portion positioned outside of the superconducting or permanent magnet, wherein the low field has a range of 0.01 nT-100 mT; a shuttling mechanism configured to deliver a sample between the low field portion and the high field portion; and a polarization sub-assembly configured to hyperpolarize the sample while the sample is within the low field portion. A device can be configured to cause nuclear spin hyperpolarization in diamond particles such that the hyperpolarization is transferable to at least one of an external liquid or an external solid. A process of hyperpolarizing substances can include applying optical illumination to the substance, irradiating the substance with a series of microwave signals as one of either a single signal or as a frequency comb to hyperpolarize the nuclei in the substance, and relaying polarization to nuclear spins of one of a surrounding solid or fluid.
MAGNETIC RESONANCE SYSTEM WITH AIR SUCTION APPARATUS
A magnetic resonance system has an air suction apparatus configured and arranged so as to suck air exhaled by a patient examined by the MR system. A method for operating the MR system is also provided, with which air exhaled by a patient examined by the MR system is sucked in.
SPIN RESONANCE SIGNAL MEASUREMENT USING A MODULATED FICTITIOUS FIELD
Spin resonance spectroscopy and/or imaging is achieved using a system that combines longitudinal (e.g., along the z-axis) detection with a modulated fictitious field generated by a transverse plane (e.g., xy-plane) RF field. Based on z-axis detection of magnetization polarized by this fictitious field as it is modulated (e.g., modulated on and off, or otherwise), spin resonance signals (e.g., EPR, NMR) are measurable with high isolation simultaneous transmit and receive capability. Additionally or alternatively, spin relaxation times can be measured using the described systems.
APPARATUS AND METHOD FOR MAGNETIC RESONANCE IMAGING WITH ELECTROPERMANENT MAGNETS
Apparatuses and methods for MRI take advantage of properties of electropermanent magnet module arrays to change the magnetic state of their magnetizable material during a spin echo.