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1. 发明授权

US11624793B2 Method for acquiring measurement data using a magnetic resonance system with correction of k-space trajectories 有权
公开(公告)号：US11624793B2
公开(公告)日：2023-04-11
申请号：US17383526
申请日：2021-07-23
申请人： Siemens Healthcare GmbH
发明人： Adam Kettinger , Mario Zeller
IPC分类号： G01V3/00 , G01R33/48 , G01R33/561 , G01R33/56 , G01R33/54 , G01R33/385
摘要： In a method for acquiring measurement data using a magnetic resonance (MR) system having a gradient unit, frequency-dependent parameters characterizing the gradient unit of the MR system are accessed (e.g. loaded from a memory), a k-space trajectory of a RESOLVE (Readout Segmentation Of Long Variable Echo trains) sequence planned for a MR measurement is accessed, MR measurement data is acquired based on the planned k-space trajectory and reconstructing image data from the MR measurement data, and an electronic signal is provided that represents the reconstructed image data as an output of the MR system. The k-space trajectory may have a frequency component in at least one direction. The planned k-space trajectory may be corrected based on at least one frequency component of the planned k-space trajectory and the frequency-dependent parameters.

2. 发明授权

US11619690B2 Medical scanner accessory system and medical scanner 有权
公开(公告)号：US11619690B2
公开(公告)日：2023-04-04
申请号：US17241765
申请日：2021-04-27
申请人： TracInnovations ApS
发明人： Oline Vinter Olesen , Ole Nerst
IPC分类号： G01V3/00 , G01R33/28 , G01R33/36 , G01R33/567 , G02B6/44 , H02G11/02
摘要： The present disclosure relates to an un-motorized coiling mechanism for cable handling in medical scanning. A medical scanner accessory system for a medical scanner is disclosed. The medical scanner accessory system comprises a base part; a drum part rotatably connected to the base part, the drum part having a rotation axis and configured for accommodating an electronic device; a coiling mechanism comprising a first coiling part and a second coiling part; an elastic cord with a first point attached to the base part and a second point attached to the drum part, wherein the elastic cord is coiled on the coiling mechanism; and a cable comprising a jacket, wherein the cable has a first connector at a first end and a second connector at a second end thereof, wherein the first connector is connectable to a movable part of the medical scanner and the second connector is connectable to the electronic device, wherein the cable is coiled on a first part of the drum part, wherein the elastic cord is configured to apply a force to the drum part for rotating the drum part in a coiling direction of rotation about the rotation axis thereby coiling the cable on the first part of the drum part.

3. 发明授权

US11598834B2 Magnetic resonance imaging apparatus 有权
公开(公告)号：US11598834B2
公开(公告)日：2023-03-07
申请号：US17305257
申请日：2021-07-02
申请人： CANON MEDICAL SYSTEMS CORPORATION
发明人： Mitsue Miyazaki , Yoshimori Kassai
IPC分类号： G01V3/00 , G01R33/54 , G01R33/48 , G01R33/567
摘要： In one embodiment, a magnetic resonance imaging apparatus includes: a scanner that includes a static magnetic field magnet configured to generate a static magnetic field, a gradient coil configured to generate a gradient magnetic field, and a WB (Whole Body) coil configured to apply an RF pulse to an object; and processing circuitry. The processing circuitry is configured to: set (i) a pulse sequence in which a sequence element is repeated, the sequence element including at least an inversion pulse and (ii) a data acquisition sequence executed after a delay time from the inversion pulse; and cause the scanner to execute the pulse sequence by using virtual gating.

4. 发明授权

US11574728B2 Method for enabling magnetic resonance imaging of a subject 有权
公开(公告)号：US11574728B2
公开(公告)日：2023-02-07
申请号：US17254321
申请日：2019-06-19
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Thomas Erik Amthor , Liqin Wang , Chenguang Zhao , Joachim Dieter Schmidt , Jorn Borgert , Yajing Zhang , Ingmar Graesslin , Tanja Nordhoff
IPC分类号： G01V3/00 , G16H30/40 , G16H50/20 , G06F16/23 , G01R33/54
摘要： The present disclosure relates to a medical imaging method for enabling magnetic resonance imaging of a subject (318) using a set of imaging parameters of imaging protocols, the method comprising: receiving information related to the subject; using a predefined machine learning model for suggesting at least one imaging protocol for the received information, wherein the imaging protocol comprises at least part of the set of imaging parameters and associated values; providing the imaging protocol.

5. 发明授权

US11474183B1 Motion correction systems and methods of propeller magnetic resonance images 有权
公开(公告)号：US11474183B1
公开(公告)日：2022-10-18
申请号：US17370627
申请日：2021-07-08
申请人： GE PRECISION HEALTHCARE LLC
发明人： Shaorong Chang , Xucheng Zhu , Ali Ersoz , Ajeetkumar Gaddipati , Moran Wei
IPC分类号： G01V3/00 , G01R33/565 , G01R33/561 , G01R33/48
摘要： A magnetic resonance (MR) imaging method of correcting motion in precorrection MR images of a subject is provided. The method includes applying, by an MR system, a pulse sequence having a k-space trajectory of a blade being rotated in k-space. The method also includes acquiring k-space data of a three-dimensional (3D) imaging volume of the subject, the k-space data of the 3D imaging volume corresponding to the precorrection MR images and acquired by the pulse sequence. The method further includes receiving a 3D MR calibration data of a 3D calibration volume, wherein the 3D calibration volume is greater than or equal to the 3D imaging volume, jointly estimating rotation and translation in the precorrection MR images based on the k-space data of the 3D imaging volume and the calibration data, correcting motion in the precorrection images based on the estimated rotation and the estimated translation, and outputting the motion-corrected images.

6. 发明授权

US11474179B2 Method and system for in-phase and out-of-phase magnetic resonance imaging 有权
公开(公告)号：US11474179B2
公开(公告)日：2022-10-18
申请号：US17149040
申请日：2021-01-14
申请人： Siemens Healthcare GmbH
发明人： Nadine Dispenza , Dominik Paul , Manuel Stich , Mario Zeller
IPC分类号： G01V3/00 , G01R33/48 , G01R33/54 , G01R33/56
摘要： In a method for MRI of an object, spins of a first material and spins of a second material are excited. An in-phase echo signal is acquired when the spins are in-phase and an out-of-phase echo signal is acquired, when the spins are out of phase. A first image for the first material and/or a second image for the second material is generated by a computing unit depending on the in-phase echo signal and the out-of-phase echo signal. For acquiring the out-of-phase echo signal, a momentum space is sampled asymmetrically in a read-out direction.

7. 发明授权

US11325544B2 Protector with sensor 有权
公开(公告)号：US11325544B2
公开(公告)日：2022-05-10
申请号：US17027806
申请日：2020-09-22
申请人： NISHIKAWA RUBBER CO., LTD. , AISIN SEIKI KABUSHIKI KAISHA
发明人： Michihiko Matsumoto , Wataru Hattori
IPC分类号： B60R16/023 , B60J5/06 , E05F15/44 , G01V3/00 , B60J5/04
摘要： An inner-cabin side part of a hollow part of a protector with a sensor extends between a top end and an inner-cabin side end with an inner-cabin side apex closest to an interior of an automobile body. A distance is shorter between the inner-cabin side apex and the inner-cabin side end than between the top end and the inner-cabin side apex. An outer-cabin side part of the hollow part extends between the top end and an outer-cabin side end with an outer-cabin side apex closest to an exterior of the automobile body. A distance is shorter between the outer-cabin side apex and the outer-cabin side end than between the top end and the outer-cabin side apex. Thicknesses of an outer coat of the hollow part are increased toward the apexes from the top end, and are uniform between the apexes and the inner-cabin side end and the outer-cabin side end.

8. 发明授权

US11313934B2 Method for 2D magnetic resonance imaging, corresponding MRI device, computer program, and computer-readable storage medium 有权
公开(公告)号：US11313934B2
公开(公告)日：2022-04-26
申请号：US16914780
申请日：2020-06-29
申请人： Siemens Healthcare GmbH
发明人： Mario Zeller
IPC分类号： G01V3/00 , G01R33/565 , G01R33/48 , G01R33/561
摘要： The present disclosure relates to a method and a magnetic resonance imaging device for two-dimensional (2D) magnetic resonance (MR) imaging of a subject. The disclosure further relates to a corresponding computer program and a corresponding computer-readable storage medium. In one exemplary method, a k-space dataset of the subject is acquired using a simultaneous multi-slice technique. Therein, a blipped phase-encoding gradient is applied in a pseudo-random manner to achieve an incoherent undersampling at least in a k-space direction perpendicular to a slice select direction. A compressed sensing reconstruction is then performed based on the acquired k-space dataset to generate an MR image of the subject.

9. 发明授权

US11294009B2 Cartesian sampling for dynamic magnetic resonance imaging (MRI) 有权
公开(公告)号：US11294009B2
公开(公告)日：2022-04-05
申请号：US16984351
申请日：2020-08-04
申请人： Ohio State Innovation Foundation , Siemens Healthcare GmbH
发明人： Rizwan Ahmad , Ning Jin , Orlando Simonetti , Yingmin Liu , Adam Rich
IPC分类号： G01V3/00 , G01R33/48 , G01R33/561 , G01R33/54 , G01R33/56
摘要： A variable density Cartesian sampling method that allows retrospective adjustment of temporal resolution, providing added flexibility for real-time applications where optimal temporal resolution may not be known in advance. The methods provide for a computationally efficient sampling methods where a first step includes producing a uniformly random sampling pattern using a golden ratio on a grid, and the second step is applying a nonlinear stretching operation to create a variable density sampling pattern. Diagnostic quality images may be recovered at different temporal resolutions.

10. 发明授权

US11280866B2 System and methods for T1 and T2 weighted magnetic resonance imaging 有权
公开(公告)号：US11280866B2
公开(公告)日：2022-03-22
申请号：US15734337
申请日：2019-06-13
申请人： UNIVERSITY OF PITTSBURGH—OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION
发明人： Jullie W. Pan , Chan-Hong Moon , Hoby Hetherington
IPC分类号： G01V3/00 , G01R33/56 , G01R33/48 , G01R33/50 , G01R33/561
摘要： A magnetic resonance imaging method includes performing an inversion pulse sequence using an MRI system, the inversion pulse sequence producing an inversion recovery period, and during the inversion recovery period: (i) performing a longitudinal T2 encoding pulse sequence using the MRI system; (ii) acquiring a post longitudinal T2 encoding pulse sequence image signal block immediately following the longitudinal T2 encoding pulse sequence using the MRI system; and (iii) acquiring an additional image signal block either before the longitudinal T2 encoding pulse sequence or following the acquiring of the post longitudinal T2 encoding pulse sequence image signal block using the MRI system. The method further include generating calculated image data based on at least the post longitudinal T2 encoding pulse sequence image signal block using a self-correcting normalization image combination scheme.

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