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21. 发明授权

US6084497A Superconducting magnets 有权
标题翻译：超导磁体
公开(公告)号：US6084497A
公开(公告)日：2000-07-04
申请号：US129572
申请日：1998-08-05
申请人： Stuart Crozier , David Michael Doddrell
发明人： Stuart Crozier , David Michael Doddrell
IPC分类号： G01R33/3815 , H01F5/00
CPC分类号： G01R33/3815
摘要： A compact magnet is disclosed for high field, superconducting magnets for use in magnetic resonance spectroscopy. The magnet has at least a first and a second group of coils with the or each coil in the first group having wound to provide a negative current density with respect to the other coils. The first group acts to enable the overall length of the magnet to be reduced while maintaining a homogenous field over a central region of the magnet.
摘要翻译：公开了用于磁共振光谱的高场超导磁体的小型磁体。磁体具有至少第一组和第二组线圈，其中第一组中的线圈或每个线圈具有绕组，以提供相对于其它线圈的负电流密度。第一组起作用以使磁体的整个长度减小，同时保持在磁体的中心区域上的均匀场。

22. 发明授权

US09977100B2 Coil arrangement for use in a magnetic resonance imaging system 有权
公开(公告)号：US09977100B2
公开(公告)日：2018-05-22
申请号：US13262145
申请日：2010-03-30
申请人： Stuart Crozier , Adnan Trakic , Ewald Weber , Bing Keong Li , Hua Wang
发明人： Stuart Crozier , Adnan Trakic , Ewald Weber , Bing Keong Li , Hua Wang
IPC分类号： G01R33/3415 , A61B5/055 , G01R33/36 , A61B5/00
CPC分类号： G01R33/3415 , A61B5/055 , A61B5/4528 , A61B5/4533 , G01R33/365
摘要： A coil arrangement for use in a magnetic resonance imaging system, the imaging system being for generating a magnetic imaging field in an imaging region, the coil arrangement including at least three coils for at least one of transmitting, receiving or transceiving an electromagnetic field, each coil being provided on a coil geometry and being substantially orthogonal.

23. 发明申请

US20120074935A1 MRI Coil Design 有权
标题翻译： MRI线圈设计
公开(公告)号：US20120074935A1
公开(公告)日：2012-03-29
申请号：US12936682
申请日：2009-04-07
申请人： Stuart Crozier , Bing Keong Li , Feng Liu , Ewald Weber
发明人： Stuart Crozier , Bing Keong Li , Feng Liu , Ewald Weber
IPC分类号： G01R33/48 , G01R33/34
CPC分类号： G01R33/34046 , G01R33/34007 , G01R33/3415 , G01R33/365 , G01R33/5611
摘要： A coil for a magnetic resonance imaging device consists of multiple coil elements arranged about an imaging space. Each coil element comprise radiating structures oriented at an angle to a tangent of the imaging space. Angling the radiating structures reduces mutual coupling between coil elements and enhances the penetration of the radio frequency field to the imaging space.
摘要翻译：用于磁共振成像装置的线圈由围绕成像空间布置的多个线圈元件组成。每个线圈元件包括以与成像空间的切线成一角度定向的辐射结构。倾斜辐射结构减少线圈元件之间的相互耦合，并增强射频场对成像空间的穿透。

24. 发明授权

US07936168B2 Magnetic field dosimeter 有权
标题翻译：磁场剂量计
公开(公告)号：US07936168B2
公开(公告)日：2011-05-03
申请号：US11663825
申请日：2005-09-28
申请人： Stuart Crozier , Stephen James Wilson , Ian Gregg
发明人： Stuart Crozier , Stephen James Wilson , Ian Gregg
IPC分类号： G01R33/02 , G01R33/07
CPC分类号： G01D9/005 , G01R33/02 , G01R33/022
摘要： A portable device is used to measure exposure to magnetic fields and/or exposure to changes of magnetic field. The device (10) includes a first sensor (14) for measuring instantaneous magnetic field strength, and a second sensor (15) which is located adjacent to, and orientated in the same direction as, the first sensor for providing an output indicative of the time rate of change of the magnetic field. An integrator (22) integrates the rate of change output from the second sensor (15) over time to derive relative changes in the magnetic field. A processor (20) is connected to the outputs of at least the first sensor and the integrator. The processor selectively provides an indication of field strength from the output of the first sensor if the output is within the normal operating range of the first sensor, or otherwise from the integrator. A memory (24) is connected to the output of the second sensor (15) to store cumulative exposure to changes in the magnetic field. Three pairs of first and second sensors may be orientated in respective orthogonal directions.
摘要翻译：便携式设备用于测量磁场的暴露和/或暴露于磁场的变化。装置（10）包括用于测量瞬时磁场强度的第一传感器（14）和与第一传感器相邻并定向于与第一传感器相同方向定位的第二传感器（15），用于提供指示磁场的时间变化率。积分器（22）将随着时间推移从第二传感器（15）输出的变化率积分以导出磁场的相对变化。处理器（20）至少连接到第一传感器和积分器的输出。如果输出在第一传感器的正常操作范围内，或者来自积分器，则处理器选择性地从第一传感器的输出提供场强的指示。存储器（24）连接到第二传感器（15）的输出端以存储对磁场变化的累积曝光。可以在各个正交方向上定向三对第一和第二传感器。

25. 发明授权

US07898252B2 Phased array coil for MRI 有权
标题翻译：磁共振阵列线圈
公开(公告)号：US07898252B2
公开(公告)日：2011-03-01
申请号：US11908033
申请日：2006-03-09
申请人： Stuart Crozier , Feng Liu , Bing Keong Li
发明人： Stuart Crozier , Feng Liu , Bing Keong Li
IPC分类号： G01V3/00
CPC分类号： G01R33/5659 , G01R33/3415
摘要： A method and apparatus for ameliorating high-field image distortion in magnetic resonance imaging of tissue. Two separate scans of a target region are taken with different phase and amplitude values for each scan. The phase and amplitude values of each scan are selected to be complimentary so as to provide scans that have improved SNR when averaged using, for example, sum-of-squares averaging.
摘要翻译：一种用于改善组织磁共振成像中高场图像失真的方法和装置。对于每个扫描，以不同的相位和幅度值拍摄目标区域的两个单独的扫描。选择每个扫描的相位和振幅值是互补的，以便当使用例如平方和平均来提供平均时具有改善的SNR的扫描。

26. 发明授权

US08754644B2 MRI apparatus and method with moving field component 有权
标题翻译：具有运动场分量的MRI装置和方法
公开(公告)号：US08754644B2
公开(公告)日：2014-06-17
申请号：US13000312
申请日：2009-06-19
申请人： Adnan Trakic , Ewald Weber , Bing Keong Li , Stephen James Wilson , Wang Hua , Feng Liu , Stuart Crozier
发明人： Adnan Trakic , Ewald Weber , Bing Keong Li , Stephen James Wilson , Wang Hua , Feng Liu , Stuart Crozier
IPC分类号： G01V3/00
CPC分类号： G01R33/5659 , G01R33/34007 , G01R33/3635 , G01R33/422 , G01R33/446 , G01R33/5611 , G01R33/5612
摘要： Apparatus for use in a magnetic resonance imaging system, the imaging system generating a magnetic imaging field in an imaging region (5), the apparatus including at least one coil for at least one of transmitting, receiving or transceiving an electromagnetic field, a field component (4) (such as a coil or a shield) and a drive (6) coupled to the field component for moving the field component (4) relative to the imaging region (5) to thereby modify the electromagnetic field during imaging process. The same concept can also be applied to nuclear imaging or nuclear spectroscopy apparatus.
摘要翻译：一种在磁共振成像系统中使用的装置，所述成像系统在成像区域（5）中产生磁成像场，所述装置包括至少一个用于发射，接收或收发电磁场的线圈，场分量（4）（例如线圈或屏蔽）和耦合到场分量的驱动器（6），用于相对于成像区域（5）移动场分量（4），从而在成像过程期间修改电磁场。同样的概念也可以应用于核成像或核光谱仪器。

27. 发明授权

US08421463B2 Magnets for use in magnetic resonance imaging 有权
标题翻译：用于磁共振成像的磁铁
公开(公告)号：US08421463B2
公开(公告)日：2013-04-16
申请号：US12447070
申请日：2007-10-26
申请人： Stuart Crozier , Huawei Zhao , Feng Liu
发明人： Stuart Crozier , Huawei Zhao , Feng Liu
IPC分类号： G01V3/00
CPC分类号： G01R33/3815 , G01R33/421
摘要： A magnetic resonance system uses a shielded superconducting magnet to produce a dsv useful for specialist imaging in an overall short magnet system at field strengths 1.5 Tesla and above. The magnet includes at least a first central coil C1, which has a length of at least 25% of the overall length of the magnet, and is used in concert with a series of symmetric primary coils, at least one set of which carry current in a direction opposite to that of the central coil. Force balancing is advantageously used in the design of the coils. The primary coils are shielded by at least one shielding coil, which carries current in a direction opposite to the majority of the primary coils. The magnet resonance system can be used for orthopedic imaging.
摘要翻译：磁共振系统使用屏蔽超导磁体产生一个dsv，用于整个短磁体系统中的专家成像，场强为1.5特斯拉及以上。该磁体包括至少一个第一中心线圈C1，该中心线圈C1的长度至少为磁铁整体长度的25％，并与一系列对称的初级线圈一致使用，至少一组载体电流与中心线圈相反的方向。力平衡有利地用于线圈的设计中。初级线圈由至少一个屏蔽线圈屏蔽，该屏蔽线圈沿与大部分初级线圈相反的方向承载电流。磁共振系统可用于矫形成像。

28. 发明申请

US20120258862A1 OPEN-BORE MAGNET FOR USE IN MAGNETIC RESONANCE IMAGING 审中-公开
标题翻译：用于磁共振成像的开放磁体
公开(公告)号：US20120258862A1
公开(公告)日：2012-10-11
申请号：US13518117
申请日：2010-12-20
申请人： Feng Liu , Riyu Wei , Stuart Crozier
发明人： Feng Liu , Riyu Wei , Stuart Crozier
IPC分类号： G01R33/3815 , G01R33/035
CPC分类号： G01R33/3815 , H01F6/06
摘要： A magnetic resonance system is provided which employs a shielded, electromagnetically asymmetric and low-stress magnet to produce a superior sized imaging region close to the patient side. The magnet has a double layered configuration. In the primary layer, the magnet includes at least two strongest coils at two ends of the magnet (end coils), which carry current in the same direction. The magnet may include at least one coil close to the end coils which carries current in a direction opposite to that of the end coils. The magnet employs a plurality of smaller sized coils (4-7, relative to the large end-coils) in the central region of the primary layer, and these coils are located asymmetrically relative to the imaging region centre. The magnet is shielded by a plurality (1-5) of shielding coils, which carry current in a direction opposite to that of the end-coils at primary layer. Compared with conventional short-bore magnets, the magnet of the invention offers an accessible imaging region with significantly enlarged imaging region, and it can be used in, for example, body-part or whole-body imaging.
摘要翻译：提供一种磁共振系统，其采用屏蔽的电磁不对称和低应力磁体来产生靠近患者侧的高级成像区域。磁体具有双层结构。在主层中，磁体包括在磁体（端部线圈）的两端处的至少两个最强的线圈，其在同一方向上承载电流。磁体可以包括靠近端部线圈的至少一个线圈，其在与端部线圈的方向相反的方向上承载电流。磁体在主层的中心区域使用多个较小尺寸的线圈（相对于大端部线圈的4-7），并且这些线圈相对于成像区域中心不对称地定位。磁体被多个（1-5）的屏蔽线圈屏蔽，该屏蔽线圈在主层上沿着与末端线圈相反的方向承载电流。与传统的短孔磁体相比，本发明的磁体提供了一种具有显着放大的成像区域的可访问成像区域，并且可以用于例如身体部位或全身成像。

29. 发明申请

US20100182009A1 COIL DECOUPLING 有权
标题翻译：线圈解锁
公开(公告)号：US20100182009A1
公开(公告)日：2010-07-22
申请号：US12593237
申请日：2008-03-26
申请人： Stuart Crozier , Bing Keong Li , Ewald Weber
发明人： Stuart Crozier , Bing Keong Li , Ewald Weber
IPC分类号： G01R33/36
CPC分类号： G01R33/34046 , A61B5/055 , G01R33/34076 , G01R33/365 , G01R33/5611
摘要： A Magnetic Resonance Imaging (MRI) phased array head coil (10) comprises an array of coils (1, 2, 3, 4) a decoupling circuit (7) and a decoupling base (14). Counter wound inductors from adjoining coils (1, 2, 3, 4) in the decoupling circuit (7) are interlaced to achieve mutual decoupling between adjoining coils. Each separate coil (1, 2, 3, 4) includes a pair of spaced parallel main conductors (12) located on opposite sides of a cylindrical space (5) enclosed by the coils (1, 2, 3, 4). The decoupling base (14) comprises two meandering conductor bases (8, 9) which are interlaced. Orthogonal main conductors (12) of the coil (1, 2, 3, 4) share a common conductor base (8, 9). The multiple crossings of the paths of the conductor bases (8, 9) reduces mutual coupling effects.
摘要翻译：磁共振成像（MRI）相控阵列头线圈（10）包括线圈（1,2,3,4）阵列，去耦电路（7）和去耦基座（14）。在去耦电路（7）中来自相邻线圈（1,2,3,4）的反绕绕电感器交织以实现相邻线圈之间的相互去耦。每个分离的线圈（1,2,3,4）包括位于由线圈（1,2,3,4）包围的圆柱形空间（5）的相对侧上的一对隔开的平行主导体（12）。去耦基座（14）包括两个交织的曲折导体基座（8,9）。线圈（1,2,3,4）的正交主导体（12）共用公共导体基座（8,9）。导体基座（8,9）的路径的多个交叉点减少了相互耦合效应。

30. 发明申请

US20080272785A1 Phased Array Coil for MRI 有权
标题翻译：用于MRI的相控阵线圈
公开(公告)号：US20080272785A1
公开(公告)日：2008-11-06
申请号：US11908033
申请日：2006-03-09
申请人： Stuart Crozier , Feng Liu , Bing Keong Li
发明人： Stuart Crozier , Feng Liu , Bing Keong Li
IPC分类号： G01R33/3415
CPC分类号： G01R33/5659 , G01R33/3415
摘要： A method and apparatus for ameliorating high-field image distortion in magnetic resonance imaging of tissue. Two separate scans of a target region are taken with different phase and amplitude values for each scan. The phase and amplitude values of each scan are selected to be complimentary so as to provide scans that have improved SNR when averaged using, for example, sum-of-squares averaging.
摘要翻译：一种用于改善组织磁共振成像中高场图像失真的方法和装置。对于每个扫描，以不同的相位和幅度值拍摄目标区域的两个单独的扫描。选择每个扫描的相位和振幅值是互补的，以便当使用例如平方和平均来提供平均时具有改善的SNR的扫描。

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