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1.发明公开公开(公告)号：US20240319299A1
公开(公告)日：2024-09-26
申请号：US18609481
申请日：2024-03-19
Applicant: Siemens Healthineers AG
Inventor： Stephan Biber
Abstract: A method for operating an imaging modality of a magnetic resonance system and magnetic resonance system. At least one item of environmental information in an environment of the imaging modality is detected with at least one detection unit (of the magnetic resonance system. A potential start time is defined depending on the at least one detected item of environmental information. At least one component of the imaging modality is activated depending on the potential start time.
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公开(公告)号：US20240241197A1
公开(公告)日：2024-07-18
申请号：US17850407
申请日：2022-06-27
Applicant: Fahad Alraddadi , William Monski , Tobias Sun
Inventor： Fahad Alraddadi , William Monski , Tobias Sun
Abstract: An MRI coil having embedded therein a Diagnostic Interface Device (or DID); means for plugging the embedded DID of the MRI coil to a frequency-testing power source, said embedded DID adapted for: (a) measuring the status of certain key electrical conditions for the coil; (b) receiving a response back from the signals initially aimed at the coil in question; (c) processing those responses received; and (d) transferring the measured electronic status (using a specific code number for the coil) to a remote storage area on the internet. A method of use is also disclosed.
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公开(公告)号：US11959983B2
公开(公告)日：2024-04-16
申请号：US17827471
申请日：2022-05-27
Applicant: Siemens Healthcare GmbH
Inventor： Hong Cheng , Stefan Pott , Franz Eiermann
Abstract: Body coil tuning control device having: DC-DC converter with input connected to a DC power supply of an MRI system and output connected to input of an LDO, output of the LDO connected to first connection of a first resistor group; a first opamp with non-inverting input connected to first connection of the first resistor group, inverting input connected to the second connection of the first resistor group, and output connected to gate of a MOSFET array; and a negative feedback circuit connected between the output and the non-inverting input of the first opamp. The MOSFET array has a drain connected to the second connection of the first resistor group and a source connected to the input of the body coil of the MRI system. After the output signal of the first opamp is input to the gate of the MOSFET array, the source outputs a constant preset current.
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公开(公告)号：US20230333188A1
公开(公告)日：2023-10-19
申请号：US18138261
申请日：2023-04-24
Applicant: Hyperfine Operations, Inc.
Inventor： Todd Rearick , Gregory L. Charvat , Matthew Scot Rosen , Jonathan M. Rothberg
IPC: G01R33/36 , H01F7/06 , G01R33/56 , G01R33/28 , G01R33/48 , H01F7/02 , G01R33/38 , G01R33/565 , G01R33/58 , G01R33/383 , G01R33/3875 , G01R33/34 , G01R33/385 , G01R33/44 , G01R33/381 , G01R33/54
CPC classification number: G01R33/5608 , G01R33/28 , G01R33/34007 , G01R33/36 , G01R33/3614 , G01R33/38 , G01R33/3802 , G01R33/3804 , G01R33/3806 , G01R33/381 , G01R33/383 , G01R33/385 , G01R33/3852 , G01R33/3854 , G01R33/3856 , G01R33/3858 , G01R33/3875 , G01R33/445 , G01R33/48 , G01R33/543 , G01R33/546 , G01R33/56 , G01R33/56518 , G01R33/58 , H01F7/02 , H01F7/06 , G01R33/422
Abstract: 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.
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公开(公告)号：US20230168322A1
公开(公告)日：2023-06-01
申请号：US18161690
申请日：2023-01-30
Applicant: Transmural Systems LLC
Inventor： Nasser Rafiee , Ozgur Kocaturk
CPC classification number: G01R33/287 , G01R33/36
Abstract: The present disclosure provides medical devices having MRI-compatible circuitry. Preferably, the devices do not project an enlarged profile, yet their position can be determined during an iMRI procedure. Illustrative embodiments of such a device can include a base surface, a first conducting layer disposed on the base surface, a first insulating layer disposed over at least a portion of the first conducting layer, and a second conducting layer disposed over at least a portion of the first insulating layer.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20190137587A1
公开(公告)日：2019-05-09
申请号：US16170168
申请日：2018-10-25
Applicant: Siemens Healthcare GmbH
Inventor： Swen CAMPAGNA
IPC: G01R33/54 , G01R33/561
CPC classification number: G01R33/546 , G01R33/36 , G01R33/543 , G01R33/561 , G05B19/042 , G06T1/20 , G06T1/60
Abstract: An MR system including a control computer and a digital control device is described. The control computer includes an external digital image data port for transmitting control data, including sequence data and encoded as image data, from the control computer to a digital control device; and the digital control device includes a port, compatible with the external digital image data port of the control computer, for receiving the control data, received from the external digital image data port and designed to extract the sequence data from the received control data, encoded as image data. A method for activating a digital control device via a control computer is also described.
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公开(公告)号：US20180372819A1
公开(公告)日：2018-12-27
申请号：US15634598
申请日：2017-06-27
Applicant: General Electric Company
Inventor： Ruxi Wang , Xiaohu Liu , Han Peng , Fengfeng Tao , Juan Antonio Sabate
IPC: G01R33/385 , G01R33/36
CPC classification number: G01R33/3852 , G01R33/36 , G01R33/3856 , G01R33/422
Abstract: This disclosure regards a magnetic resonance imaging system including a scanner, and gradient drivers. The scanner is to be implemented within a scan room that is shielded from electromagnetic interference. Gradient coils are designed to create a linear gradient in the magnetic field generated in the scanner by a primary magnet. These coils are energized by gradient drivers. The gradient drivers use transformers and other electrical devices in a switching stage configured to generate pulse-width-modulated power. The transformers may have non-magnetic cores to facilitate implementing the gradient drivers within the scan room. The gradient drivers also use a filtering stage which uses inductors and other electrical devices to smooth the pulse-width-modulated power. The inductors within the filters may have non-magnetic cores to facilitate implementing the gradient driver within the scan room. Additionally, an inductor with a hollow wire may be used to circulate fluid to facilitate cooling the gradient driver.
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公开(公告)号：US20180372814A1
公开(公告)日：2018-12-27
申请号：US15628742
申请日：2017-06-21
Applicant: Toshiba Medical Systems Corporation
Inventor： Sadanori Tomiha , Xin Chen
CPC classification number: G01R33/288 , G01R33/36 , G01R33/3642 , G01R33/543 , G01R33/58
Abstract: According to one embodiment, a MRI apparatus includes a transmitter coil generating a RF magnetic field, a receiver coil, and processing circuitry. The receiver coil receives a MR signal generated by an object placed in an imaging space to which the RF magnetic field is applied. The processing circuitry calculates a specific absorption rate by using a first correction coefficient which indicates a characteristic that is inherent to the transmitter coil and relates to the generation of the RF magnetic field, and a second correction coefficient which indicates a characteristic that the receiver coil has on the RF magnetic field by electromagnetic coupling between the receiver coil and the RF magnetic field during a generation period of the RF magnetic field.
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公开(公告)号：US20180259601A1
公开(公告)日：2018-09-13
申请号：US15534507
申请日：2015-11-30
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Francis Patrick O'NEILL , Ronald Paul CONSILGIO
IPC: G01R33/28 , G01R33/36 , G01R33/565 , G01R33/567 , G01R33/48 , A61B5/0408 , A61B5/08 , A61B5/16 , A61B5/00
CPC classification number: G01R33/288 , A61B5/0408 , A61B5/0816 , A61B5/165 , A61B5/4821 , G01R33/36 , G01R33/3692 , G01R33/4808 , G01R33/56509 , G01R33/5673
Abstract: The following relates generally to ensuring patient safety while operating a Magnetic Resonance Imaging (MRI) machine. Many MRI systems operate using: fiber optic cables to carry signals, electrically conductive cables to carry other signals, and radio frequency (RF) coils to create an electromagnetic field. Typically, the electrically conductive cables and RF coils do not interact in a way that causes harm to a patient. However, certain shapes and/or lengths of cables exhibit the phenomenon of “resonance” that increases their propensity to concentrate RF currents induced by the RF coils. This may increase the temperature of the cable or other component in the MRI system leading to patient harm. The methods disclosed herein provide a solution to this by sensing a shape of the fiber optic cable and determining if the fiber optic cable will exhibit resonance. If it is determined that resonance may potentially occur, an alarm may be generated or a radio frequency amplifier may be interlocked.
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公开(公告)号：US10073155B2
公开(公告)日：2018-09-11
申请号：US15446597
申请日：2017-03-01
Applicant: HITACHI, LTD.
Inventor： Munetaka Tsuda
CPC classification number: G01R33/3802 , A61B5/055 , G01R3/00 , G01R33/36 , G01R33/3804 , G01R33/3815 , H01F6/02 , H01F6/04 , Y10T29/49002 , Y10T29/49004 , Y10T29/49005 , Y10T29/49014 , Y10T29/4902 , Y10T29/4908
Abstract: An adjustment method of a magnetic resonance imaging apparatus includes: a cooling and excitation step in which work of transporting a superconducting magnet to a facility different from a facility where the superconducting magnet is to be installed, cooling a superconducting coil of the superconducting magnet with a refrigerant, and supplying a current from an external power supply for excitation is repeated until a predetermined rated current flows; a demagnetization and transportation step of demagnetizing the superconducting coil and transporting the superconducting magnet to the facility where the superconducting magnet is to be installed in a state where the superconducting coil is cooled by the refrigerant; and an installation step of installing the superconducting magnet in the facility where the superconducting magnet is to be installed and supplying a predetermined rated current from an external power supply to the superconducting coil in order to excite the superconducting coil.
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