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公开(公告)号：US11574728B2
公开(公告)日：2023-02-07
申请号：US17254321
申请日：2019-06-19
发明人： Thomas Erik Amthor , Liqin Wang , Chenguang Zhao , Joachim Dieter Schmidt , Jorn Borgert , Yajing Zhang , Ingmar Graesslin , Tanja Nordhoff
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.
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公开(公告)号：US10939876B2
公开(公告)日：2021-03-09
申请号：US14408342
申请日：2013-06-20
IPC分类号： A61B5/00 , A61B5/055 , A61B90/30 , G01R33/28 , A61B90/00 , A61B90/11 , A61B34/20 , A61B34/00 , G01R33/341
摘要： A magnetic resonance (MR) system (10) for guidance of a shaft or needle (16) to a target (14) of a subject (12) is provided. The system includes a user interface (76). The user interface (76) includes a frame (78) positioned on a surface of the subject (12). The frame (78) includes an opening (82) over an entry point of a planned trajectory for the shaft or needle (16). The planned trajectory extends from the entry point to the target (14). The user interface (76) further includes one or more visual indicators (80) arranged on the frame (78) around the opening (82). The one or more visual indicators (80) at least one of: 1) visually indicate deviation of the shaft or needle (16) from the planned trajectory; and 2) visually indicate a current position of a real-time slice of real-time MR images.
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公开(公告)号：US10132897B2
公开(公告)日：2018-11-20
申请号：US15599776
申请日：2017-05-19
IPC分类号： G01V3/00 , G01R33/56 , G01R33/48 , A61N5/10 , G01R33/3873 , G01R33/3875
摘要： A magnetic resonance imaging system (302) includes a magnet (306) for generating the magnetic field within an imaging zone 318. The magnet generates a magnetic field with a zero crossing (346, 404) outside of the imaging zone. The medical apparatus further includes a gantry (332) configured for rotating a ferromagnetic component (336, 510) about a rotational axis (333). A magnetic correcting element (348, 900, 1000) is located on a radial path (344, 504) perpendicular to the rotational axis. The magnetic correcting element is positioned on the radial path such that change in the magnetic field within the imaging zone due to the ferromagnetic component is reduced.
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公开(公告)号：US20180160934A1
公开(公告)日：2018-06-14
申请号：US15875063
申请日：2018-01-19
发明人： Steffen Weiss , Ronaldus Frederik Johannes Holthuizen , Sascha Krueger , Peter Koken , Daniel Wirtz , Thomas Erik Amthor , Alk Uhlemann
CPC分类号： A61B5/055 , A61B5/064 , A61B5/6832 , A61B5/72 , G01R33/287 , G01R33/34084
摘要： A medical apparatus (1100) comprising a magnetic resonance imaging system and an interventional device (300) comprising a shaft (302, 1014, 1120). The medical apparatus further comprises a toroidal magnetic resonance fiducial marker (306, 600, 800, 900, 1000, 1122) attached to the shaft. The shaft passes through a center point (610, 810, 908, 1006) of the fiducial marker. The medical apparatus further comprises machine executable instructions (1150, 1152, 1154, 1156, 1158) for execution by a processor. The instructions cause the processor to acquire (100, 200) magnetic resonance data, to reconstruct (102, 202) a magnetic resonance image (1142), and to receive (104, 204) the selection of a target volume (1118, 1144, 1168). The instructions further cause the processor to repeatedly: acquire (106, 206) magnetic resonance location data (1146) from the fiducial marker and render (108, 212) a view (1148, 1162) indicating the position of the shaft relative to the target zone.
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公开(公告)号：US20150148660A1
公开(公告)日：2015-05-28
申请号：US14408342
申请日：2013-06-20
IPC分类号： A61B19/00 , A61B5/00 , G01R33/341 , G01R33/28 , A61B5/055
CPC分类号： A61B5/7405 , A61B5/055 , A61B5/7475 , A61B34/20 , A61B34/25 , A61B90/11 , A61B90/30 , A61B90/39 , A61B2034/2074 , A61B2090/309 , A61B2090/372 , A61B2090/374 , A61B2090/3954 , G01R33/286 , G01R33/341
摘要： A magnetic resonance (MR) system (10) for guidance of a shaft or needle (16) to a target (14) of a subject (12) is provided. The system includes a user interface (76). The user interface (76) includes a frame (78) positioned on a surface of the subject (12). The frame (78) includes an opening (82) over an entry point of a planned trajectory for the shaft or needle (16). The planned trajectory extends from the entry point to the target (14). The user interface (76) further includes one or more visual indicators (80) arranged on the frame (78) around the opening (82). The one or more visual indicators (80) at least one of: 1) visually indicate deviation of the shaft or needle (16) from the planned trajectory; and 2) visually indicate a current position of a real-time slice of real-time MR images.
摘要翻译： 提供了一种用于将轴或针（16）引导到对象（12）的目标（14）的磁共振（MR）系统（10）。 该系统包括用户界面（76）。 用户界面（76）包括定位在被摄体（12）的表面上的框架（78）。 框架（78）包括在用于轴或针（16）的计划轨迹的入口点上方的开口（82）。 计划轨迹从进入点延伸到目标（14）。 用户界面（76）还包括布置在围绕开口（82）的框架（78）上的一个或多个视觉指示器（80）。 所述一个或多个视觉指示器（80）至少一个：1）可视地指示所述轴或针（16）与所述计划轨迹的偏差; 和2）可视地指示实时MR图像的实时切片的当前位置。
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公开(公告)号：US20140316249A1
公开(公告)日：2014-10-23
申请号：US14356223
申请日：2012-11-06
CPC分类号： G01R33/287 , A61N5/1001 , A61N5/1007 , A61N5/1039 , A61N2005/1022 , A61N2005/1055 , A61N2005/1089 , A61N2005/1094 , G01R33/48
摘要： A miniature X-ray source (10) for high dose rate brachytherapy that can be operated in a wide range of operating directions (76) in the presence of a strong magnetic field (B), such as, for instance, the static magnetic field (B) of an MR scanner, with at least one anode (12) and at least one cathode (14), wherein in an operative state, an electric field (18) between the anode (12) and the cathode (14) is essentially spherically symmetric in at least a continuous solid angle of more than π/2 sr about a center (16) of the cathode (14); a brachytherapy system, comprising at least one said miniature X-ray source (10), and a method for generating a beam (82) of X-ray radiation inside an outer magnetic field (B) or an operative MR scanner with said miniature X-ray source (10).
摘要翻译： 一种用于高剂量率近距离放射治疗的微型X射线源（10），其可以在强磁场（B）的存在下在宽范围的操作方向（76）下操作，例如静态磁场 （12）和至少一个阴极（14）的MR扫描器（B），其中在工作状态下，阳极（12）和阴极（14）之间的电场（18）是 在阴极（14）的中心（16）的至少一个连续立体角以上大体上相对于对称; 包括至少一个所述微型X射线源（10）的近距离放射治疗系统，以及用于在外部磁场（B）或具有所述微型X的操作MR扫描器中产生X射线辐射束（82）的方法 射源（10）。
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公开(公告)号：US11274857B2
公开(公告)日：2022-03-15
申请号：US15778082
申请日：2016-11-24
发明人： Thomas Erik Amthor , Miha Fuderer , Gerardus Bernardus Jozef Mulder , Christoph Leussler , Peter Forthmann , Philippe Abel Menteur
摘要： A cryogenic cooling system (10) comprising a cryostat (12), a two-stage cryogenic cold head (24) and at least one thermal connection member (136; 236; 336; 436) that is configured to provide at least a portion of a heat transfer path (138; 238; 338; 438) from the second stage member (30) to the first stage member (26) of the two-stage cryogenic cold head (24). The heat transfer path (138; 238; 338; 438) is arranged outside the cold head (24). A thermal resistance of the provided at least portion of the heat transfer path (138; 238; 338; 438) at the second cryogenic temperature is larger than a thermal resistance of the provided at least portion of the heat transfer path (138; 238; 338; 438) at the first cryogenic temperature.
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公开(公告)号：US11226389B2
公开(公告)日：2022-01-18
申请号：US16339858
申请日：2017-10-09
IPC分类号： G01R33/563 , A61B5/00 , A61B5/055 , A61B5/026 , G01R33/56 , G06T7/00 , G01R33/561
摘要： The invention provides for a method of operating a magnetic resonance imaging system for imaging a subject. The method comprises acquiring (700) tagged magnetic resonance data (642) and a first portion (644) of fingerprinting magnetic resonance data by controlling the magnetic resonance imaging system with tagging pulse sequence commands (100). The tagging pulse sequence commands comprise a tagging inversion pulse portion (102) for spin labeling a tagging location within the subject. The tagging pulse sequence commands comprise a background suppression portion (104). The background suppression portion comprises MRF pulse sequence commands for acquiring fingerprinting magnetic resonance data according to a magnetic resonance fingerprinting protocol. The tagging pulse sequence commands comprise an image acquisition portion (106). The method comprises acquiring (702) control magnetic resonance data (646) and a second portion (648) of the fingerprinting magnetic resonance data by controlling the magnetic resonance imaging system with control pulse sequence commands. The control pulse sequence commands comprise a control inversion pulse portion (202). The control pulse sequence commands comprise the background suppression portion (104′). The control pulse sequence commands comprise the image acquisition portion (106). The method comprises reconstructing (704) tagged magnitude images (650) using the tagged magnetic resonance data. The method comprises reconstructing (706) a control magnitude images (652) using the control magnetic resonance data. The method comprises constructing (708) an ASL image by subtracting the control magnitude images and the tagged magnitude images from each other. The method comprises reconstructing (710) a series of magnetic resonance fingerprinting images (656) using the first portion of the fingerprinting magnetic resonance data and/or the second portion of the fingerprinting magnetic resonance data. The method comprises generating (712) at least one magnetic resonance parametric map (658) by comparing the series of magnetic resonance fingerprinting images with a magnetic resonance fingerprinting dictionary.
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公开(公告)号：US20210350911A1
公开(公告)日：2021-11-11
申请号：US17261771
申请日：2019-07-17
发明人： Thomas Erik Amthor , Jörn Borgert , Joachim Schmidt , Eberhard Sebastian Hansis , Thomas Netsch , Michael Günter Helle
IPC分类号： G16H40/20 , G16H30/20 , G16H10/60 , G16H40/67 , G16H70/20 , G16H50/70 , G06N20/00 , G01R33/56 , G01T1/161 , G06K9/00
摘要： When acquiring detailed utilization information from imaging equipment in a cross-vendor approach, one or more sensors (16, 18, 22, 24) are positioned within a data security zone (14) in which an imaging procedure is performed. Sensor data is pre-processed on an isolated processing unit (20) to remove any sensitive information and keep a selection of features only. The resultant feature pattern is transmitted outside of the data security zone to a processing unit (28) where pattern recognition is performed on feature pattern to identify the type of imaging modality, scan, etc. being performed as well as to determine whether the scan is being performed according to schedule.
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公开(公告)号：US09891298B2
公开(公告)日：2018-02-13
申请号：US15688047
申请日：2017-08-28
CPC分类号： G01R33/3642 , G01R33/34 , G01R33/3815 , H01F6/008 , H01F6/06 , H01F6/065 , H01H36/008
摘要： The invention provides for magnetic resonance imaging system (600) comprising a superconducting magnet (100) with a first current lead (108) and a second current lead (110) for connecting to a current ramping system (624). The magnet further comprises a vacuum vessel (104) penetrated by the first current lead and the second current lead. The magnet further comprises a magnet circuit (106) within the vacuum vessel. The magnet circuit has a first magnet circuit connection (132) and a second magnet circuit connection (134). The magnet further comprises a first switch (120) between the first magnet connection and the first current lead and a second switch (122) between the second magnet connection and the second current lead. The magnet further comprises a first current shunt (128) connected across the first switch and a second current shunt (130) connected across the second switch. The magnet further comprises a first rigid coil loop (124) operable to actuate the first switch. The first rigid coil loop forms a portion of the first electrical connection. The magnet further comprises a second rigid coil loop (126) operable to actuate the second switch. The second rigid coil loop forms a portion of the second electrical connection.
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