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公开(公告)号：US12029597B2
公开(公告)日：2024-07-09
申请号：US18298358
申请日：2023-04-10
IPC分类号： A61B5/055 , A61B5/00 , A61B6/00 , A61B6/03 , A61B6/04 , A61B6/50 , G01R33/34 , G01R33/3415 , G01R33/48 , G01T1/16 , G01T1/29 , G01V5/00 , G01V5/22
CPC分类号： A61B6/4417 , A61B5/0035 , A61B5/004 , A61B5/055 , A61B6/037 , A61B6/0435 , A61B6/502 , G01R33/481 , G01T1/1603 , G01T1/2985 , G01V5/22 , A61B6/4411 , G01R33/34053 , G01R33/34076 , G01R33/3415
摘要： The present disclosure relates to an insert system for performing positron emission tomography (PET) imaging. The insert system can be reversibly installed to an existing system, such that PET functionality can be introduced into the existing system without the need to significantly modify the existing system. The present disclosure also relates to a multi-modality imaging system capable for conducting both PET imaging and magnetic resonance imaging (MRI). The PET and MRI imaging can be performed simultaneously or sequentially, while the performance of neither imaging modality is compromised for the operation of the other imaging modality.
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公开(公告)号：US20240219493A1
公开(公告)日：2024-07-04
申请号：US18401266
申请日：2023-12-29
发明人： Dashen CHU , Shihao CHEN , Shang XU , Yunlei YAO , Hai LU
IPC分类号： G01R33/3415 , G01R33/34 , G01R33/36
CPC分类号： G01R33/3415 , G01R33/34084 , G01R33/3621
摘要： Embodiments of the present disclosure provide a radio frequency device and a magnetic resonance device. The radio frequency device may include a surface coil including at least one coil assembly. The at least one coil assembly may include a first coil assembly and a second coil assembly. The first coil assembly may include at least two first coil units arranged in an array. The second coil assembly may include at least one second coil unit. The first coil assembly and the second coil assembly may be arranged in a stacked configuration.
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公开(公告)号：US12025684B2
公开(公告)日：2024-07-02
申请号：US17880326
申请日：2022-08-03
发明人： Thomas Chmielewski , Steven Koenig
IPC分类号： G01R33/34 , G01R33/3415
CPC分类号： G01R33/34053 , G01R33/3415
摘要： RF coil assemblies are disclosed that include multiturn loops formed of conductors configured to receive RF signals from a patient during MRI. The multiturn loops include an inner loop and an outer loop that both lie substantially in a plane of the RF coil assembly. The inner loop is at least partially nested within the outer loop.
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公开(公告)号：US20240172954A1
公开(公告)日：2024-05-30
申请号：US18519142
申请日：2023-11-27
IPC分类号： A61B5/055 , A61B5/06 , G01R33/24 , G01R33/3415 , G01R33/3875
CPC分类号： A61B5/055 , A61B5/062 , G01R33/243 , G01R33/3415 , G01R33/3875
摘要： A computer-implemented method for operating an MR facility having a main magnet unit with a patient bore. A field of view (FOV) of the MR facility, defined by a main magnetic field's homogeneity, lies within the bore. A patient bench to position the patient within the patient bore is longitudinally movable. Additionally, a local coil arrangement with at least one coil element to measure MR data is freely positionable on the patient bench and/or a patient's body to be measured with respect to the longitudinal direction. The method includes: ascertaining position information of the local coil arrangement in the longitudinal direction using a measuring device when the patient bench is partially outside the patient bore; ascertaining recording information describing the local coil arrangement's position with respect to the FOV; and automatically positioning the patient bench in the longitudinal direction at an approach position ascertained from the position and recording information.
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公开(公告)号：US20240142551A1
公开(公告)日：2024-05-02
申请号：US18376530
申请日：2023-10-04
发明人： Yosuke Otake , Koichi Arai , Asuka Ikeda
IPC分类号： G01R33/3415 , G01R33/34 , G01R33/36 , G01R33/385
CPC分类号： G01R33/3415 , G01R33/34046 , G01R33/3621 , G01R33/385
摘要： A high-frequency coil device can maintain a distance between coils at any mounting position in an RF coil including a movable coil unit and can achieve a uniform sensitivity distribution and high sensitivity. A first coil unit configured to move along a substantially circular trajectory and a second coil unit fixed within the substantially circular trajectory are provided, the first coil unit and the second coil unit are disposed at substantially point-symmetric positions, and magnetic coupling between conductor loops provided in both the coil units is maintained substantially constant in a movable range of the first coil unit.
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6.发明授权公开(公告)号：US11918337B2
公开(公告)日：2024-03-05
申请号：US17832772
申请日：2022-06-06
发明人： Toru Shirai , Suguru Yokosawa , Yukio Kaneko , Atsuro Suzuki , Tomoki Amemiya
IPC分类号： A61B5/055 , G01R33/3415 , G01R33/56 , G01R33/561 , G06T7/00
CPC分类号： A61B5/055 , G01R33/3415 , G01R33/5608 , G01R33/5611 , G06T7/0012 , G06T2207/10088
摘要： The present invention is to perform appropriate noise reduction processing on an image having different signal levels or noise levels depending on an imaging condition or a reconstruction condition. A magnetic resonance imaging apparatus according to the invention includes: a measurement unit that receives a nuclear magnetic resonance signal generated in a subject by a receiving coil; an image reconstruction unit that processes the nuclear magnetic resonance signal received by the receiving coil and reconstructs an image of the subject; an SNR spatial distribution calculation unit that calculates spatial distribution of a signal-to-noise ratio of the image using spatial distribution of a noise level and spatial distribution of the signal of the image; and a noise reduction unit that reduces noise from the image based on the spatial distribution of the signal-to-noise ratio.
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公开(公告)号：US20240065571A1
公开(公告)日：2024-02-29
申请号：US18387197
申请日：2023-11-06
发明人： Qingyu Dai , Yanting Huo , Jiabin Yao , Saban Kurucay , Jonathan C. West , Yuwen Li
IPC分类号： A61B5/055 , G01R33/3415 , G01R33/48 , G01R33/54
CPC分类号： A61B5/055 , G01R33/3415 , G01R33/4822 , G01R33/543
摘要： An embodiment of the present invention provides a scanning control system for a magnetic resonance imaging system, comprising: a first 3D camera, configured to capture a three-dimensional image of a scan subject located on a scanning table of the magnetic resonance imaging system; a processing device, configured to identify body position information of the scan subject based on the three-dimensional image; and a control device, configured to set scanning parameters related to a body position based on the body position information.
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公开(公告)号：US11885856B2
公开(公告)日：2024-01-30
申请号：US17078308
申请日：2020-10-23
申请人： Hitachi, Ltd.
发明人： Kohjiro Iwasawa , Takanori Nishiyama , Kazuyuki Kato , Hideta Habara , Yosuke Otake , Satoshi Yamashita , Toru Shirai
IPC分类号： G01R33/34 , G01R33/3415 , A61B5/055
CPC分类号： G01R33/34084 , A61B5/055 , G01R33/34007 , G01R33/3415 , G01R33/34046
摘要： Provided is a coil device capable of improving operability or durability thereof, being attached to a subject in a close contact state regardless of the size of a head of the subject, and obtaining a high-quality MRI image. The coil device includes at least one coil unit which has a coil element and a coil support portion which has a mechanism for attaching the coil unit to a head of a subject. The coil support portion includes a base portion, a support body which is connected to the base portion and has an elastic member, and a holder which connects the support body to the at least one coil unit and the holder has at least three contact points which are formed directly or indirectly with respect to the base portion.
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9.发明公开公开(公告)号：US20230337932A1
公开(公告)日：2023-10-26
申请号：US18134197
申请日：2023-04-13
IPC分类号： A61B5/055 , G01R33/3415 , G01R33/561 , G01R33/48 , G06T5/00
CPC分类号： A61B5/055 , G01R33/3415 , G01R33/5611 , G01R33/482 , G06T5/002 , G06T2207/10088
摘要： Various examples relate to SENSitivity Encoding (SENSE) reconstruction of Magnetic Resonance Imaging (MRI) images. Multiple coil sensitivity maps per coil of a receiver coil array are used, e.g., obtained from an Eigenvalue-based Spatially Constrained Iterative Reconstruction Technique (ESPIRiT) autocalibration protocol.
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10.发明公开公开(公告)号：US20230296706A1
公开(公告)日：2023-09-21
申请号：US18180903
申请日：2023-03-09
发明人： Yu TANAKA
IPC分类号： G01R33/3415 , G01R33/34 , G01R33/00 , G01R33/56
CPC分类号： G01R33/3415 , G01R33/34046 , G01R33/0029 , G01R33/5608
摘要： A radio frequency coil apparatus according to an embodiment is a radio frequency coil apparatus to be disposed in a bore of a magnetic resonance imaging apparatus and including processing circuitry. The processing circuitry acquires a nuclear magnetic resonance signal generated from a subject placed in the bore. The processing circuitry supplies voltage to a constituent component of the radio frequency coil apparatus by using a switching regulator and a linear regulator. The processing circuitry selectively drives the switching regulator and the linear regulator based on an imaging sequence of the magnetic resonance imaging apparatus. The processing circuitry drives the linear regulator in a first duration including a duration in which the nuclear magnetic resonance signal is acquired, and drives the switching regulator in a second duration other than the first duration.
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