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1. 发明申请

US20230137188A1 HYPERPOLARISATION DEVICE, SYSTEM AND PROCESS 有权
公开(公告)号：US20230137188A1
公开(公告)日：2023-05-04
申请号：US17802470
申请日：2021-02-26
申请人： MASTER DYNAMIC LIMITED
发明人： Yau Chuen YIU , Juan CHENG , Koon Chung HUI
IPC分类号： G01R33/56 , G01R33/28
摘要： A device(100a(i), 100a(ii), 100a(iii), 100a(iv), 200 for cis-tracing polarization of 12C isotope-based magnetic resource imaging contrast agents, comprising one or more diamond material structures(120(i), 120(ii), 120(iii), 120(iv), 210, 220) and one or more channels(105a(i), 105a (ii), 105a (iii), 105a (iv), 205) provided adjacent to the diamond material structures 120(i), 120(ii), 120(iii), 120(iv), 210, 220); the diamond material structures 120(i), 120(ii), 120(iii), 120(iv), 210, 220) provide a source of negatively charged nitrogen vacancy celles for polarization of a 13C iso-type-based magnetic measure imaging contrast agesi disguised in one or more channels(105a (i), 105a (ii), 105a (iii), 105a (iv), 205) and cis diamond material structure(120(i), 120(ii), 120(iii), 120(iv), 210, 220) provides a light guide for light for excitation of nitrogen vacancy celles for polarization of 13C isotope-based magnetic resource imaging contrast agent.

2. 发明授权

US11639980B2 Multi-echo MR imaging with spiral acquisition 有权
公开(公告)号：US11639980B2
公开(公告)日：2023-05-02
申请号：US17613302
申请日：2020-05-25
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Miha Fuderer , Elwin De Weerdt
IPC分类号： G01R33/56 , G01R33/48
摘要： The invention relates to a method of MR imaging of an object (10) positioned in an examination volume of a MR device (1). It is an object of the invention to enable fast spiral MR imaging with a defined T2 contrast. The method of the invention comprises the following steps: —generating a number of spin echoes by subjecting the object (10) to one or 5 more shots of an imaging sequence, each shot comprising an RF excitation pulse (21) followed by a number of RF refocusing pulses (22), wherein modulated readout magnetic field gradients (23, 24) are applied in each interval between successive RF refocusing pulses (22), —acquiring MR signal data, wherein each spin echo is recorded along a spiral trajectory (31-33, 41-43) in k-space which winds around the k-space origin with varying radial distance, wherein the trajectory (31, 41) of at least one spin echo has a different rate of variation of the radial distance at least in a central k-space region compared to the trajectories (32, 33, 42, 43) of the other spin echoes, and—reconstructing an MR image from the acquired MR signal data. Moreover, the invention relates to an MR device (1) and to a computer program for an MR device (1).

3. 发明授权

US11633124B2 Magnetic resonance spectroscopy pulse sequence, acquisition, and processing system and method 有权
公开(公告)号：US11633124B2
公开(公告)日：2023-04-25
申请号：US17529734
申请日：2021-11-18
申请人： ACLARION, INC.
发明人： James Clayton Peacock, III , John Patrick Claude , Paul Henry Kane , Ricardo Dario Pradenas
IPC分类号： G06T19/00 , A61B5/055 , A61B5/00 , G01R33/483 , G01R33/46 , G01R33/48 , G01R33/56 , G06T7/00
摘要： Systems and methods are provided for processing a set of multiple serially acquired magnetic resonance spectroscopy (MRS) free induction decay (FID) frames from a multi-frame MRS acquisition series from a region of interest (ROI) in a subject, and for providing a post-processed MRS spectrum. Processing parameters are dynamically varied while measuring results to determine the optimal post-processed results. Spectral regions opposite water from chemical regions of interest are evaluated and used in at least one processing operation. Frequency shift error is estimated via spectral correlation between free induction decay (FID) frames and a reference spectrum. Multiple groups of FID frames within the acquired set are identified to different phases corresponding with a phase step cycle of the acquisition. Baseline correction is also performed via rank order filter (ROF) estimate and a polynomial fit. Sections of the ROF may be excluded from the polynomial fit, such as for example sections determined to be associated with relevant spectral peaks.

4. 发明授权

US11633119B2 Medical imaging and efficient sharing of medical imaging information 有权
公开(公告)号：US11633119B2
公开(公告)日：2023-04-25
申请号：US16952914
申请日：2020-11-19
申请人： ARTERYS INC.
发明人： Kyle Dormer , Hussein Patni , Darryl Bidulock , John Axerio-Cilies , Torin Arni Taerum
IPC分类号： A61B5/026 , A61B5/00 , A61B5/055 , A61B5/021 , A61B5/02 , G01R33/56 , G16H10/60 , G16H30/20 , G06T7/00 , H04L9/32 , H04L9/40 , G06T7/269 , G16H30/40 , G01R33/563
摘要： An MRI image processing and analysis system may identify instances of structure in MRI flow data, e.g., coherency, derive contours and/or clinical markers based on the identified structures. The system may be remotely located from one or more MRI acquisition systems, and perform: error detection and/or correction on MRI data sets (e.g., phase error correction, phase aliasing, signal unwrapping, and/or on other artifacts); segmentation; visualization of flow (e.g., velocity, arterial versus venous flow, shunts) superimposed on anatomical structure, quantification; verification; and/or generation of patient specific 4-D flow protocols. A protected health information (PHI) service is provided which de-identifies medical study data and allows medical providers to control PHI data, and uploads the de-identified data to an analytics service provider (ASP) system. A web application is provided which merges the PHI data with the de-identified data while keeping control of the PHI data with the medical provider.

5. 发明申请

US20230122915A1 REDUCTION OF OFF-RESONANCE EFFECTS IN MAGNETIC RESONANCE IMAGING 有权
公开(公告)号：US20230122915A1
公开(公告)日：2023-04-20
申请号：US17914435
申请日：2021-03-24
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Kay Nehrke , Peter Boernert
IPC分类号： G01R33/565 , G01R33/48 , G01R33/56 , G06N3/08
摘要： Abstract: Disclosed herein is a medical system comprising a memory (110) storing machine executable instructions (120) and a trained neural network (122). The trained neural network is configured to output corrected magnetic resonance image data (130) in response to receiving as input a set of magnetic resonance images (126) each having a different spatially constant frequency off-resonance factor. The medical system further comprises a computational system (106) configured for controlling the medical system, wherein execution of the machine executable instructions causes the computational system to: receive (200) k-space data (124) acquired according to a magnetic resonance imaging protocol; reconstruct (202) a set of magnetic resonance images (126) according to the magnetic resonance imaging protocol, wherein each of the set of magnetic resonance images is reconstructed assuming a different spatially constant frequency off-resonance factor chosen from a list of frequency off-resonance factors (128); and receive (204) the corrected magnetic resonance image data in response to inputting the set of magnetic resonance images into the trained neural network.

6. 发明申请

US20230116931A1 MEDICAL INFORMATION PROCESSING APPARATUS, MEDICAL INFORMATION PROCESSING METHOD, AND STORAGE MEDIUM 有权
公开(公告)号：US20230116931A1
公开(公告)日：2023-04-20
申请号：US18084613
申请日：2022-12-20
申请人： CANON MEDICAL SYSTEMS CORPORATION
发明人： Yuichi YAMASHITA , Kazuto NAKABAYASHI , Hitoshi KANAZAWA , Kazuya OKAMOTO , Hiroshi TAKAI , Nobuyuki KONUMA , Kensuke SHINODA
IPC分类号： G01R33/56 , G06T5/00 , G06T5/50
摘要： According to one embodiment, a medical information processing apparatus includes processing circuitry configured to derive an index value with respect to noise included in data associated with magnetic resonance signals collected by each of a plurality of reception coils, adjust a degree to which noise is removed from the data associated with the magnetic resonance signals based on the derived index value, remove noise from the data associated with the magnetic resonance signals based on the adjusted degree, and perform compositing of the data associated with the magnetic resonance signals from which noise has been removed.

7. 发明授权

US11624796B2 Correction of TOF MR data 有权
公开(公告)号：US11624796B2
公开(公告)日：2023-04-11
申请号：US17678665
申请日：2022-02-23
申请人： Siemens Healthcare GmbH
发明人： Flavio Carinci , Dominik Paul
IPC分类号： G01R33/563 , G01R33/483 , G01R33/561 , G01R33/56
摘要： A method for correcting TOF MR data, including providing a coil sensitivity map for an examination region of an examination object, providing the TOF MR data of the examination region, and generating corrected TOF MR image data comprising multiplying the TOF MR data by an inverse of the coil sensitivity map.

8. 发明授权

US11619695B2 Method and device for magnetic resonance imaging, and corresponding computer program product 有权
公开(公告)号：US11619695B2
公开(公告)日：2023-04-04
申请号：US17139304
申请日：2020-12-31
申请人： Siemens Healthcare GmbH
发明人： David Grodzki , Gregor Koerzdoerfer , Mathias Nittka
IPC分类号： G01R33/56 , G01R33/44 , G01R33/483 , G01R33/50 , G01R33/561 , G01R33/58 , A61B5/055
摘要： In a Method and a device for magnetic resonance imaging of a subject using a spoiled gradient echo sequence, a B0 magnetic field strength of at most 1.5 T is used during the sequence. As part of the sequence a slice select gradient acting as a spoil gradient is played out. Substantially simultaneously with the slice select gradient a predetermined RF pulse is played out in the sequence, wherein a time-bandwidth product of the RF pulse is set so that a majority of the energy of the RF pulse is transmitted in its central main lobe.

9. 发明申请

US20230082616A1 SYSTEM, APPARATUS, AND METHOD FOR INCREMENTAL MOTION CORRECTION IN MAGNETIC RESONANCE IMAGING 有权
公开(公告)号：US20230082616A1
公开(公告)日：2023-03-16
申请号：US17988825
申请日：2022-11-17
申请人： CANON MEDICAL SYSTEMS CORPORATION
发明人： Andrew J. WHEATON , Anuj SHARMA , Samir Dev SHARMA
IPC分类号： G06T11/00 , G01R33/565 , G01R33/48 , G01R33/56
摘要： An apparatus for incremental motion correction in medical imaging. The apparatus for motion correction in magnetic resonance imaging includes processing circuitry configured to estimate an intermediate image from a first section of k-space, the first section of the k-space corresponding to acquisition time points within a magnetic resonance scan of a subject, the corresponding acquisition time points within the magnetic resonance scan being associated with shots of the k-space determined to have minimal motion, estimate motion parameters of a second section of the k-space using the estimated intermediate image, combine data from the first section of the k-space with data from the second section of the k-space according to the estimated motion parameters, and reconstruct the combined data of the k-space to generate a final image.

10. 发明授权

US11592508B2 Generation of a homogenization field suitable for homogenization of magnetic resonance data 有权
公开(公告)号：US11592508B2
公开(公告)日：2023-02-28
申请号：US17363294
申请日：2021-06-30
申请人： Siemens Healthcare GmbH
发明人： Thomas Benkert , Fasil Gadjimuradov , Marcel Dominik Nickel
IPC分类号： G01V3/00 , G01R33/56 , G01R33/54 , G01R33/565
摘要： In a method for generation of a homogenization field suitable for homogenization of magnetic resonance data of an examination object, first magnetic resonance data from an examination region of the examination object is provided, a trained function is provided, a homogenization field is extracted by processing the first magnetic resonance data by way of the trained function, and the homogenization field is provided.

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