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公开(公告)号：US20220175486A1
公开(公告)日：2022-06-09
申请号：US17598544
申请日：2020-03-27
摘要： Disclosed is a magnetic resonance imaging magnet assembly (102, 102′) configured for supporting a subject (118) within an imaging zone (108). The magnetic resonance imaging magnet assembly comprises a magnetic resonance imaging magnet (104), wherein the magnetic resonance imaging magnet is configured for generating a main magnetic field with the imaging zone. The magnetic resonance imaging magnet assembly further comprises an optical image generator (122) configured for generating a two-dimensional image. The magnetic resonance imaging magnet assembly further comprises an optical waveguide bundle (123) configured for coupling to the optical image generator. The magnetic resonance imaging magnet assembly further comprises a two-dimensional display (124) comprising pixels (600), wherein each of the pixels comprises a diffusor (602, 602′). Each of the pixels is optically coupled to at least one optical waveguide selected from the optical waveguide bundle, wherein the at least one optical waveguide of each of the pixels is configured for illuminating the diffusor. The optical waveguide bundle and the two-dimensional display are configured for displaying the two-dimensional image.
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公开(公告)号：US20220171007A1
公开(公告)日：2022-06-02
申请号：US17600616
申请日：2020-04-01
发明人： Peter Forthmann
IPC分类号： G01R33/3873
摘要： A shim tray (10) for a main magnet system of a magnetic resonance examination system comprises a plurality of shim pockets (11), of which an individual shim pocket has side walls (21, 42) forming an open channel (11). Two opposite lateral side walls (21) have insertion profiles (22) to receive an end shim-element (13) at least one open channel's end. Essentially the entire volume of the channel of the shim pocket is available to hold passive shim elements.
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公开(公告)号：US11055848B2
公开(公告)日：2021-07-06
申请号：US14396407
申请日：2013-05-10
发明人： Holger Schmitt , Peter Forthmann , Michael Grass
摘要： A method includes determining at least one characteristic about a stenosis in a vessel of a patient from image data of the stenosis, mapping the characteristic to a predefined stenosis characteristic to fractional flow reserve value look up table, identifying the fractional flow reserve value in the look up table corresponding to the characteristic, and visually presenting the image data and the identified fractional flow reserve value. A system includes memory storing a pre-defined stenosis characteristic to fractional flow reserve value look up table, a metric determiner (118) that maps at least one characteristic about a stenosis in a vessel of a patient, which is determined from image data of the stenosis, to a characteristic in the look up table and identifies a fractional flow reserve value corresponding to the characteristic, and a display (116) that visually presents the image data and the identified fractional flow reserve value.
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公开(公告)号：US20170356970A1
公开(公告)日：2017-12-14
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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公开(公告)号：US09746533B2
公开(公告)日：2017-08-29
申请号：US14375354
申请日：2013-01-14
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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6.发明申请DETERMINATION OF A FRACTIONAL FLOW RESERVE (FFR) VALUE FOR A STENOSIS OF A VESSEL 审中-公开确定流体流动的流动储备（FFR）价值公开(公告)号：US20150092999A1
公开(公告)日：2015-04-02
申请号：US14396407
申请日：2013-05-10
发明人： Holger Schmitt , Peter Forthmann , Michael Grass
IPC分类号： G06T7/00
CPC分类号： G06T7/0014 , A61B5/02007 , A61B5/742 , A61B6/032 , A61B6/504 , A61B6/5217 , G01N2800/323 , G06T2207/10088 , G06T2207/10116 , G06T2207/30104
摘要： A method includes determining at least one characteristic about a stenosis in a vessel of a patient from image data of the stenosis, mapping the characteristic to a predefined stenosis characteristic to fractional flow reserve value look up table, identifying the fractional flow reserve value in the look up table corresponding to the characteristic, and visually presenting the image data and the identified fractional flow reserve value. A system includes memory storing a pre-defined stenosis characteristic to fractional flow reserve value look up table, a metric determiner (118) that maps at least one characteristic about a stenosis in a vessel of a patient, which is determined from image data of the stenosis, to a characteristic in the look up table and identifies a fractional flow reserve value corresponding to the characteristic, and a display (116) that visually presents the image data and the identified fractional flow reserve value.
摘要翻译： 一种方法包括从狭窄图像数据确定患者血管中的狭窄的至少一个特性，将特征映射到预定义的狭窄特征到分数流量储备值查找表，识别外观中的分数流量储备值 对应于特征，并且可视地呈现图像数据和识别的分数流量储备值。 一种系统包括存储分数流量储备值查找表中预定义的狭窄特征的存储器，一个度量确定器（118），其将关于病人容器中的狭窄的至少一个特性映射到患者的血管中， 狭窄，到查找表中的特征，并且识别对应于该特征的分数流量保留值，以及可视地呈现图像数据和识别的分数流量储备值的显示器（116）。
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公开(公告)号：US11344218B2
公开(公告)日：2022-05-31
申请号：US15546310
申请日：2016-01-14
发明人： Julien Senegas , Daniel Wirtz , Sascha Krueger , Vincent Jeanne , Thirukumaran Thangaraj Kanagasabapathi , Joerg Sabczynski , Peter Forthmann
IPC分类号： A61B5/055 , A61B5/00 , A61B5/107 , A61B5/11 , G01R33/28 , G01R33/32 , G01R33/54 , G06T7/00 , A61B6/00 , A61B5/113
摘要： A contact-free method of determining biometric parameters and physiological parameters of a subject of interest (20) to be examined by a medical imaging modality (10), comprising steps of taking (72) a picture by a first digital camera (52) including a total view of an examination table (44); applying (74) a computer vision algorithm or an image processing algorithm to the picture for determining a biometric parameter of the subject of interest (20) in relation to the examination table (44); taking (78) at least one picture with a second digital camera (58), whose field of view (60) includes a region of the subject of interest (20) that is related to the at least one determined biometric parameter; using data indicative of the determined biometric parameter to identify (82) a subset of pixels of the at least one picture taken by the second digital camera (58) that define a region of interest (64) from which at least one physiological parameter of the subject of interest (20) is to be determined, taking (84) a plurality of pictures of the region of the subject of interest (20) with the second digital camera (58), and applying (86) a computer vision algorithm or an image processing algorithm to pictures of the plurality of pictures taken by the second digital camera (58) for calculating the region of interest (64) in the pictures of the plurality of pictures for determining the physiological parameter of the subject of interest (20) during examination; a camera system (50) for determining, in a contact-free way, biometric parameters and physiological parameters of a subject of interest (20) to be examined by use of a medical imaging modality (10) and using such method; and—a medical imaging modality (10) configured for acquisition of scanning data of at least a portion of a subject of interest (20), the medical imaging modality (10) comprising such camera system.
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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：US10894174B2
公开(公告)日：2021-01-19
申请号：US15777929
申请日：2016-12-01
IPC分类号： A61N5/10 , G01R33/38 , G01R33/3815 , G01R33/48 , A61B5/055
摘要： The following relates generally to use of magnetic resonance (MR) imaging as guidance in radiation therapy, and more specifically to use of MR imaging as guidance in proton therapy. In some embodiments, a cryogenic dewar is provided with multiple channels allowing a proton beam from a proton beam source to pass through. The proton beam may first be aligned with a first channel, and the dewar may then be rotated along with the proton source. The dewar may then be rotated to align a second channel with the proton beam.
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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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