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41. 发明公开

EP1072899A2 Unified shimming for magnetic resonance superconducting magnets 有权
标题翻译： Vereinheitlichter Magnetfeldabgleichfürsupraleitende Magnetenfürdie magnetische Resonanz
公开(公告)号：EP1072899A2
公开(公告)日：2001-01-31
申请号：EP00306242.9
申请日：2000-07-21
申请人： GENERAL ELECTRIC COMPANY
发明人： Havens, Timothy John , Smith, Robert Sethfield , Huang, Xianrui , Wong, Steven Ho-Chong , Ogle, Michele Dollar , Xu, Minfeng , Xu, Bu-Xin
IPC分类号： G01R33/387
CPC分类号： G01R33/387
摘要： A method for shimming a magnetic resonance imaging magnet requiring higher magnetic field-homogneity on a small imaging volume and by magnetic field measurements on a larger volume providing small measurement error and practical field strength measurements and utilizing the spherical harmonic coefficients of the measurements.
摘要翻译：一种用于对在小成像体积上需要较高磁场均匀性的磁共振成像磁体进行匀场的方法和通过较大体积的磁场测量来提供小的测量误差和实际的场强测量并利用测量的球谐函数。

42. 发明公开

EP3361276A1 A BRIDGE MEMBER FOR A MAGNETIC RESONANCE EXAMINATION SYSTEM 审中-公开
公开(公告)号：EP3361276A1
公开(公告)日：2018-08-15
申请号：EP17155986.7
申请日：2017-02-14
申请人： Koninklijke Philips N.V.
发明人： DE WEERDT, Elwin
IPC分类号： G01R33/387 , G01R33/48 , G01R33/28 , G01R33/56 , G01R33/565 , A61B5/055
CPC分类号： G01R33/387 , G01R33/28 , G01R33/4828 , G01R33/5607 , G01R33/56527
摘要： The present invention pertains to magnetic resonance imaging, notably of separate body parts with open space between them. A bridge member (51) containing MR responsive material is provided in the open space to establish a correspondence between the body parts (41, 42). The MR responsive material generates magnetic resonance signals in response the RF excitation, so that between the separate body parts via the bridge member magnetic resonance signal are obtained from positions between which there is at most a limited spatial variation of the main magnetic field, so that phase ambiguities between the signals from these positions are avoided. Thus chemical shift separation, notably water-fat separation though a region-of-interest containing several (both) body parts may rely on a smoothness condition imposed on the spatial distribution of the main magnetic field. This avoids artefacts, such as water-fat swaps when separating water and fat contributions in the reconstructed magnetic resonance image.

43. 发明授权

EP2725377B1 Assemblage d'aimants permanents pour un système de RMN avec dispositif de maintien et de réglage desdits aimants permanents 失效
标题翻译：集体合伙人永久性合同不受限制
公开(公告)号：EP2725377B1
公开(公告)日：2017-08-02
申请号：EP13188151.8
申请日：2013-10-10
申请人： COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES
发明人： Cazaux, Sandrine , Branco, Alexandre
IPC分类号： G01R33/38 , G01R33/383 , G01R33/387
CPC分类号： G01R33/383 , G01R33/3802 , G01R33/387

44. 发明公开

EP2977001A1 NUCLEAR MAGNETIC RESONANCE IMAGING SYSTEM AND METHOD 审中-公开
标题翻译： SYSTEM UND VERFAHRENFÜRNUKLEARMAGNETRESONANZBILDGEBUNG
公开(公告)号：EP2977001A1
公开(公告)日：2016-01-27
申请号：EP13879127.2
申请日：2013-11-28
申请人： Jiangsu Magspin Instrument Co., Ltd
发明人： ZHAO, Huawei
IPC分类号： A61B5/055 , G01R33/385 , G01R33/48 , G01R33/28
CPC分类号： G01R33/30 , A61B5/055 , A61B5/0555 , G01R33/288 , G01R33/34007 , G01R33/34046 , G01R33/385 , G01R33/3854 , G01R33/3858 , G01R33/387 , G01R33/3875
摘要： A nuclear magnetic resonance imaging system and imaging method. The system includes: an independently arranged main magnet (30); and a gradient coil (40) and a radio frequency coil (50), both connected to a patient bed (60). A bore (100) is formed in a central portion of the main magnet (30), for containing the patient bed (60), the gradient coil (40) and the radio frequency coil (50). In this system, the gradient coil (40) and the radio frequency coil (50) are separated from the main magnet (30) instead of being integrated with the main magnet (30), thus avoiding making a patient claustrophobic feeling in a too narrow space. In addition, the system lowers the requirements on the magnet material and shielding space and thus leads to further reductions in costs and maintenance expenses.
摘要翻译：核磁共振成像系统及成像方法。该系统包括：独立设置的主磁体（30）; 以及两个都连接到患者床（60）的梯度线圈（40）和射频线圈（50）。在主磁体（30）的中心部分形成孔（100），用于容纳患者床（60），梯度线圈（40）和射频线圈（50）。在该系统中，梯形线圈（40）和射频线圈（50）与主磁体（30）分离，而不是与主磁体（30）一体化，从而避免使患者幽闭感过于狭窄空间。此外，该系统降低了对磁体材料和屏蔽空间的要求，从而进一步降低了成本和维护费用。

45. 发明授权

EP1072899B1 Unified shimming for magnetic resonance superconducting magnets 有权
标题翻译：对于核磁共振超导磁体统一磁平衡
公开(公告)号：EP1072899B1
公开(公告)日：2012-10-24
申请号：EP00306242.9
申请日：2000-07-21
申请人： GENERAL ELECTRIC COMPANY
发明人： Havens, Timothy John , Smith, Robert Sethfield , Huang, Xianrui , Wong, Steven Ho-Chong , Ogle, Michele Dollar , Xu, Minfeng , Xu, Bu-Xin
IPC分类号： G01R33/387 , G01R33/3873
CPC分类号： G01R33/387

46. 发明公开

EP2498677A2 SYSTEM FOR MAGNETIC RESONANCE SPECTROSCOPY OF BRAIN TISSUE FOR PATTERN-BASED DIAGNOSTICS 审中-公开
标题翻译：系统为基于模型的诊断脑组织磁光谱
公开(公告)号：EP2498677A2
公开(公告)日：2012-09-19
申请号：EP10830773.7
申请日：2010-11-12
申请人： The Government of the United States of America as represented by the Secretary of the Department of Health and Human Services
发明人： WILKES, Jon, G. , BUZATU, Dan, A. , ALUSTA, Pierre , PEARCE, Bruce , KRETZER, Ryan, M. , IM, Inessa , BEGER, Richard, D.
IPC分类号： A61B5/055
CPC分类号： A61B5/055 , A61B5/0042 , G01R33/387 , G01R33/4625 , G01R33/465 , G06F19/36
摘要： A system and method for preprocessing magnetic resonance spectroscopy (MRS) data of brain tissue for pattern-based diagnostics is disclosed. The MRS preprocessing system includes an MRS preprocessing module that executes an operation that normalizes MRS spectrum data, recalibrates and scales the normalized MRS spectrum data, and then renormalizes the scaled MRS spectrum data. The resulting preprocessed MRS data is used to assist in identifying abnormalities in tissues shown in MRS scans.

47. 发明授权

EP1668655B1 LOW TEMPERATURE SUSCEPTIBILITY COMPENSATION 有权
标题翻译：低温敏感性补偿
公开(公告)号：EP1668655B1
公开(公告)日：2010-03-10
申请号：EP04782801.7
申请日：2004-08-31
申请人： Varian, Inc.
发明人： BARBARA, Thomas, M. , DE SWIET, Thomas
IPC分类号： H01F1/42 , G01R33/38
CPC分类号： H01F1/42 , G01R33/387 , H01F1/0018

48. 发明公开

EP2850446A1 FEEDING CIRCUIT ARRANGEMENT FOR SUPPLYING A RADIO FREQUENCY SIGNAL TO A PLURALITY OF COIL ELEMENTS OF A MAGNETIC RESONANCE COIL SYSTEM 有权转让
标题翻译：电源电路，用于提供射频信号的磁线圈系统的线圈元件各种
公开(公告)号：EP2850446A1
公开(公告)日：2015-03-25
申请号：EP13732243.4
申请日：2013-05-03
申请人： Koninklijke Philips N.V. , Philips GmbH
发明人： LIPS, Oliver , LEUSSLER, Christoph
IPC分类号： G01R33/3415 , G01R33/36
CPC分类号： G01R33/34 , G01R33/288 , G01R33/3415 , G01R33/3657 , G01R33/3664 , G01R33/387 , G01R33/543 , G01R33/583
摘要： The invention relates to a feeding circuit arrangement (18) for supplying a radio frequency signal to a plurality of coil elements (14) of a magnetic resonance coil system (12), wherein the circuit arrangement (18) comprises a main line (20) for connecting a radio frequency signal source (16); a plurality of feeding lines (22), each feeding line (22) for connecting a corresponding coil element (14) of the coil system (14); a power divider (24) arranged between the main line (20) and the plurality of feeding lines (22) for distributing the signal on the main line (20) to each of the feeding lines (22), wherein at least one of the feeding lines (22) comprises a controllable switching circuit (26) with a switching element (28) for connecting/disconnecting of two resulting line sections (30, 32) of the feeding line (22), a first line section (30) on the divider side and a second line section (32) on the side connectable to the coil element (14), and wherein the switching circuit (26) further comprises at least one connectable termination element (44) for line termination of the first line section (30) or the main line (20) comprises a circulator device (60) interconnected with a termination means (62). The invention further relates to a corresponding parallel transceiver system (10).

49. 发明公开

EP2841958A1 SYSTEM AND METHOD FOR LOCATING A GRADIENT COIL. 审中-公开
标题翻译：用于定位渐变线圈的系统和方法。
公开(公告)号：EP2841958A1
公开(公告)日：2015-03-04
申请号：EP13726279.6
申请日：2013-04-09
申请人： Koninklijke Philips N.V.
发明人： KRALICK, James Howard , BATTISTA, Frank , LEACH, Jeffrey Edward , BECKER, Dennis Ambrose
IPC分类号： G01R33/385 , G01R33/24
CPC分类号： G01R33/3858 , G01R33/24 , G01R33/243 , G01R33/307 , G01R33/387
摘要： A magnetic resonance imaging (MRI) system includes an MRI magnet (100) including a bore (101) and having a magnetic field and a gradient coil (400) disposed within the bore and having an isocenter (404). A first location within the MRI magnet is determined with respect to a first predetermined reference surface of the MRI magnet, the first location representing a center (104) of the magnetic field. A second location within the gradient coil is determined with respect to a second predetermined reference surface of the gradient coil, the second location representing the isocenter. When the gradient coil is installed within the bore, the second predetermined reference surface abuts the first predetermined reference surface. The first predetermined reference surface is adjusted to an adjusted position, the adjusted position being determined as a function of the first location and the second location and corresponding to a position of the first predetermined reference surface at which the first location coincides with the second location when the gradient coil is installed within the bore.
摘要翻译：磁共振成像（MRI）系统包括MRI磁体（100），其包括孔（101）并且具有磁场和设置在孔内并具有等中心（404）的梯度线圈（400）。 MRI磁体内的第一位置相对于MRI磁体的第一预定参考表面来确定，第一位置表示磁场的中心（104）。相对于梯度线圈的第二预定参考表面确定梯度线圈内的第二位置，第二位置表示等中心点。当梯度线圈安装在孔内时，第二预定参考表面邻接第一预定参考表面。第一预定参考表面被调节到调节位置，调节位置被确定为第一位置和第二位置的函数，并且对应于当第一位置与第二位置重合时的第一预定参考表面的位置梯度线圈安装在孔内。

50. 发明公开

EP1748300A1 Method for correcting inhomogeneities of the static magnetic field, particularly of the static magnetic field generated by the magnetic structure of a machine for acquiring mri images 有权
标题翻译：校正Inhomogeneitäten静磁场的方法，特别是通过一台机器的磁性结构产生的，用于接收核磁共振静磁场
公开(公告)号：EP1748300A1
公开(公告)日：2007-01-31
申请号：EP05425499.0
申请日：2005-07-11
申请人： Esaote S.p.A.
发明人： Besio, Stefano , Pittaluga, Stefano , Trequattrini, Alessandro
IPC分类号： G01R33/387
CPC分类号： G01R33/387
摘要： Method for correcting inhomogeneities of the static magnetic field particularly of the static magnetic field generated by the magnetic structure of a machine for acquiring nuclear magnetic resonance images provides to determine the number, the position and the magnetic moment of dipoles compensating inhomogeneities of the magnetic field to be positioned on a positioning grid such to minimize a function wherein even the total magnetic moment of compensation dipoles provided for compensating the magnetic field inhomogeneity is minimized in addition to minimizing said certain norm of the difference between the inhomogeneity vector of each magnetic field components and the linear combination of effect vectors corresponding to said magnetic field component of compensation dipoles.
摘要翻译：用于校正静磁场特别是通过一台机器的磁结构中产生的静磁场的不均匀性，用于获取核磁共振图像中的方法提供给确定性矿的数量，位置和偶极子的磁矩补偿的磁场的不均匀性，以上的定位网格寻求最小化的函数worin甚至提供用于补偿磁场不均匀性的补偿偶极子的总磁矩被定位在除了被最小化以最小化所述各磁场成分的不均匀性矢量和之间的差的某些规范效应向量对应于补偿偶极子的所述磁场分量的线性组合。

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