公开(公告)号：US20080204016A1

公开(公告)日：2008-08-28

申请号：US11913019

申请日：2006-04-10

申请人： Ian Leitch McDougall ,  Peter Hanley

发明人： Ian Leitch McDougall ,  Peter Hanley

IPC分类号： G01R33/44

CPC分类号： G01R33/3808 ,  G01R33/3815 ,  G01R33/445 ,  G01R33/48

摘要： Magnetic resonance apparatus is provided comprising a magnet having a first pair of coils arranged in a plane. The coils are operable in a counter-running manner when in use so as to generate a sensitive volume of magnetic field spaced apart from said plane. The magnetic field in the sensitive volume is arranged to have sufficient uniformity to enable magnetic resonance signals to be obtained from a target when located within the sensitive volume. The magnetic field direction Z is oriented to lie substantially parallel to the planes. The coils are arranged such that the sensitive volume is elongate in a direction X substantially parallel to the planes. A drive system is provided to cause relative movement between the magnet and the target so as to allow the sensitive volume to be moved with respect to the target.

摘要翻译： 提供磁共振装置，其包括具有布置在平面中的第一对线圈的磁体。 线圈在使用时可以以相反运行方式操作，以便产生与所述平面间隔开的敏感体积的磁场。 敏感体积中的磁场被布置成具有足够的均匀性，以使得当位于灵敏体积内时可以从目标获得磁共振信号。 磁场方向Z定向为基本平行于平面。 线圈布置成使得敏感体积在基本上平行于平面的方向X上是细长的。 提供驱动系统以引起磁体和目标之间的相对移动，从而允许敏感体积相对于目标物移动。

公开(公告)号：US06611408B2

公开(公告)日：2003-08-26

申请号：US09935157

申请日：2001-08-23

申请人： Peter Hanley ,  Ian Leitch McDougall

发明人： Peter Hanley ,  Ian Leitch McDougall

IPC分类号： H02H700

CPC分类号： H02H9/023 ,  H01F36/00 ,  Y02E40/66 ,  Y02E40/69 ,  Y10S336/01

摘要： The present invention relates to an electrical transformer which includes a primary winding coupled to first and second magnetic circuits. A magnetic flux is driven through the magnetic circuits by the primary winding. First and second secondary windings are also provided, each associated with a respective one of the magnetic circuits and being electrically connected together in series opposition. A closed superconducting fault current winding is also provided to link with the magnetic flux in the second magnetic circuit.

公开(公告)号：US6043731A

公开(公告)日：2000-03-28

申请号：US737080

申请日：1996-10-30

申请人： Ian Leitch McDougall ,  Peter Hanley

发明人： Ian Leitch McDougall ,  Peter Hanley

IPC分类号： H01L39/20 ,  H02H9/02 ,  H01L43/00

CPC分类号： H02H9/023 ,  H01L39/20 ,  H01F2006/001 ,  Y02E40/69 ,  Y10S505/881

摘要： A current limiting device having an electrical superconductor for attachment in an electrical circuit, the superconductor being made of material having a critical current density which varies with applied magnetic field. A magnetic field generator generates a magnetic field to which the superconductor is exposed. Under normal working conditions a magnetic field applied causes the critical current density to be less than a maximum critical current density. A controller adjusts the critical current density such that after a current carried by the superconductor exceeds the critical current density so that the superconductor transforms to a resistive state, the controller can be activated to increase the critical current density causing the superconductor to return the superconducting condition without terminating the flow of current through the superconductor.

摘要翻译： PCT No.PCT / GB96 / 00712 Sec。 371日期1996年10月30日 102（e）日期1996年10月30日PCT 1996年3月22日PCT公布。 公开号WO96 / 30990 日期1996年10月3日一种具有用于连接在电路中的电超导体的限流装置，超导体由具有随施加的磁场变化的临界电流密度的材料制成。 磁场发生器产生超导体暴露的磁场。 在正常工作条件下，施加的磁场使临界电流密度小于最大临界电流密度。 控制器调节临界电流密度，使得在由超导体承载的电流超过临界电流密度以使超导体转变为电阻状态之后，控制器可被激活以增加临界电流密度，从而使超导体返回超导条件 而不终止通过超导体的电流。

公开(公告)号：US5646528A

公开(公告)日：1997-07-08

申请号：US489511

申请日：1995-06-12

申请人： Peter Hanley

发明人： Peter Hanley

IPC分类号： G01R33/34 ,  G01R33/38 ,  G01R33/44 ,  G01V3/32 ,  G01V3/00

CPC分类号： G01R33/3808 ,  G01R33/34 ,  G01R33/3657 ,  G01R33/383 ,  G01V3/32

摘要： A magnet assembly having a pair of substantially aligned, spaced apart first magnets having like poles facing each other; and one or more auxiliary magnets axially aligned with the first magnets such that all magnets in the assembly are axially aligned. A magnetic field of sufficient homogeneity to perform a nuclear magnetic resonance (NMR) process is generated in a working region laterally offset form the first and second magnets. An oscillating magnetic field generating assembly is provided for performing an NMR experiment and includes a set of electrical coils connected to an oscillating electrical source. The coils are arranged between the first magnets such that the magnetic field generated by the oscillating magnet field generating assembly is also sufficiently uniform within the working region to perform an NMR experiment. A shield of electrically conductive material is positioned adjacent to and laterally offset form the set of electrical coils whereby the magnetic field generated by the oscillating magnetic field generating means is asymmetrically offset from the axis of the first magnets.

摘要翻译： 一种磁体组件，具有一对基本上对齐的间隔开的第一磁体，其具有彼此面对的相同磁极; 以及与第一磁体轴向对准的一个或多个辅助磁体，使得组件中的所有磁体都轴向对准。 在从第一和第二磁体横向偏移的工作区域中产生具有足够的均匀性以进行核磁共振（NMR）处理的磁场。 提供振荡磁场产生组件用于进行NMR实验并且包括连接到振荡电源的一组电线圈。 线圈布置在第一磁体之间，使得振荡磁场产生组件产生的磁场在工作区域内也足够均匀，以进行NMR实验。 导电材料的屏蔽被定位成邻近并横向偏移，从而由振荡磁场发生装置产生的磁场不对称地偏离第一磁体的轴线。

公开(公告)号：US5331282A

公开(公告)日：1994-07-19

申请号：US917057

申请日：1992-08-07

申请人： Ian L. McDougall ,  Peter Hanley ,  Robert C. Hawkes

发明人： Ian L. McDougall ,  Peter Hanley ,  Robert C. Hawkes

IPC分类号： A61B5/055 ,  G01R33/20 ,  G01R33/38 ,  G01R33/381 ,  G01V3/00

CPC分类号： G01R33/3808

摘要： A magnetic field generating assembly having at least two magnetic fields in the same sense. The generators are arranged such that, in use in a working region external to the generators, the resultant magnetic field exhibits a gradient extending in a first direction and at least second order variations in the fields in directions transverse to the first direction within the working region are substantially balanced such that an NMR experiment can be performed on a sample within the working region in accordance with the related method. The magnetic electrical field generators are substantially coaxial electrical coils, wherein the axis extends in the first direction.

摘要翻译： PCT No.PCT / GB91 / 00194 Sec。 371日期：1992年8月7日 102（e）日期1992年8月7日PCT 1991年2月7日PCT PCT。 公开号WO91 / 12538 日期1991年8月22日。一种具有相同意义上的至少两个磁场的磁场产生组件。 发电机被布置成使得在使用中在发电机外部的工作区域中，所产生的磁场表现出沿工作区域中沿第一方向延伸的梯度和沿着与第一方向横切的方向的场的至少二次变化 基本上是平衡的，使得可以根据相关方法对工作区域内的样品进行NMR实验。 磁场发生器是基本上同轴的电线圈，其中轴线沿第一方向延伸。

公开(公告)号：US07248048B2

公开(公告)日：2007-07-24

申请号：US10554940

申请日：2004-04-30

申请人： Ian Leitch McDougall ,  Peter Hanley

发明人： Ian Leitch McDougall ,  Peter Hanley

IPC分类号： G01V3/00

CPC分类号： G01R33/381 ,  G01R33/3815 ,  G01R33/3875

摘要： An apparatus for magnetic resonance imaging includes a first magnet for generating a first magnetic field and a second magnet for generating a second magnetic field, dissimilar to the first magnetic field, the second magnet being spaced apart from the first magnet. The apparatus is arranged such that the first and second magnets cooperate to generate a substantially homogeneous magnetic field defining a working region wherein the first and second magnetic fields are arranged asymmetrically with respect to the working region, and wherein at least part of the working region is positioned within the first magnet or between the first and second magnets.

摘要翻译： 用于磁共振成像的装置包括用于产生第一磁场的第一磁体和用于产生与第一磁场不同的第二磁场的第二磁体，第二磁体与第一磁体间隔开。 该装置被布置成使得第一和第二磁体协调以产生限定工作区域的基本上均匀的磁场，其中第一和第二磁场相对于工作区域不对称地布置，并且其中工作区域的至少一部分是 位于第一磁体内或第一和第二磁体之间。

公开(公告)号：US06239957B1

公开(公告)日：2001-05-29

申请号：US08931486

申请日：1997-09-16

申请人： Ian Leitch McDougall ,  Peter Hanley

发明人： Ian Leitch McDougall ,  Peter Hanley

IPC分类号： H01B1200

CPC分类号： H01L39/16 ,  H02H9/023 ,  Y02E40/69 ,  Y10S505/885

摘要： An electrical current limiting device comprises an electrical superconductor for attachment in an electrical circuit. The superconductor achieves a superconducting condition at relatively high temperatures. A cooling system includes a motor for flowing a cooled gas past the superconductor so that heat can be removed from the superconductor by a heat transfer process with the cooled gas.

摘要翻译： 电流限制装置包括用于附接在电路中的电超导体。 超导体在相对较高的温度下实现超导条件。 冷却系统包括用于使冷却的气体流过超导体的电动机，使得可以通过与冷却的气体的热传递过程从超导体除去热量。

公开(公告)号：US5739687A

公开(公告)日：1998-04-14

申请号：US748013

申请日：1996-11-12

申请人： Peter Hanley

发明人： Peter Hanley

IPC分类号： A61B5/055 ,  G01N24/08 ,  G01R33/38 ,  G01V3/00

CPC分类号： G01R33/3808

摘要： A magnetic field generating assembly for use in NMR apparatus comprises a pair of first magnets arranged coaxially with like poles facing each other and axially spaced apart. At least one second magnet is positioned between the first magnets and with its axis coaxial with the first magnets. The axial positions and strengths of the magnets are arranged such that a working region is defined radially spaced from the magnets and extending substantially parallel with the axis of the magnets. The magnetic field within the working region is suitable for obtaining NMR information from material in the working region and exhibits a radial gradient which is substantially uniform in the axial direction.

摘要翻译： 用于NMR装置的磁场产生组件包括与彼此面对的并且轴向间隔开的相同磁极同轴布置的一对第一磁体。 至少一个第二磁体位于第一磁体之间并且其轴与第一磁体同轴。 磁体的轴向位置和强度被布置成使得工作区域被限定为与磁体径向间隔开并且基本上平行于磁体的轴线延伸。 工作区域内的磁场适用于从工作区域的材料获得核磁共振信息，并显示径向梯度，其轴向基本均匀。

公开(公告)号：US5488342A

公开(公告)日：1996-01-30

申请号：US318824

申请日：1994-10-12

申请人： Peter Hanley

发明人： Peter Hanley

IPC分类号： G01R33/20 ,  A61B5/055 ,  G01R33/38 ,  G01R33/383 ,  G01R33/387 ,  G01R33/3873 ,  H01F7/02 ,  G01V3/00

CPC分类号： G01R33/3808 ,  G01R33/383 ,  H01F7/0278

摘要： A magnet assembly comprises a pair of substantially aligned, spaced apart first magnets (1,2) having like poles facing each other. A second magnet (3) is positioned adjacent the space between the first magnets with its magnetic axis transverse to the alignment axis of the first magnets (1,2). A magnetic field of sufficient homogeneity to perform a nuclear magnetic resonance process is generated in a working region.

摘要翻译： PCT No.PCT / GB94 / 00226 Sec。 371日期：1994年10月12日 102（e）日期1994年10月12日PCT 1994年2月7日提交PCT公布。 公开号WO94 / 18577 日期：1994年8月18日。一种磁体组件包括一对具有彼此面对的相似磁极的基本对准的间隔开的第一磁体（1,2）。 第二磁体（3）定位成与第一磁体之间的空间相邻，其磁轴横向于第一磁体（1,2）的对准轴线。 在工作区域中产生充分均匀性的磁场来进行核磁共振处理。

公开(公告)号：US07479860B2

公开(公告)日：2009-01-20

申请号：US10528146

申请日：2003-09-30

申请人： Ian Leitch McDougall ,  Robert Andrew Slade ,  Peter Hanley ,  Robert Carter Hawkes

发明人： Ian Leitch McDougall ,  Robert Andrew Slade ,  Peter Hanley ,  Robert Carter Hawkes

IPC分类号： H01F5/00

CPC分类号： G01R33/381

摘要： A magnetic field generating assembly comprising a set (A1-A3;B1-B3;C1-C3) of, typically substantially coaxial, coils substantially symmetrically arranged about a plane orthogonal to the axis. At least some of the coils carry working currents in the opposite sense to the other coils The arrangement of turns and working currents carried by the coils is such that a first working volume (10) with a substantially homogeneous magnetic field is generated within the envelope defined by the assembly, and two second working volumes (11) each with a substantially homogeneous magnetic field are generated outside the envelope, the homogeneity of each of the first and second working volumes being sufficient to perform a NMR experiment on a sample in the working volume.

摘要翻译： 磁场产生组件包括通常基本上同轴的线圈（A1-A3; B1-B3; C1-C3），该组线圈基本上对称地布置成围绕与该轴线正交的平面。 至少一些线圈将工作电流与其他线圈的相反意义上传送。线圈承载的匝数和工作电流的布置使得具有基本均匀的磁场的第一工作容积（10）在限定的外壳内产生 通过组件，并且在外壳外部产生每个具有基本均匀的磁场的两个第二工作体积（11），第一和第二工作体积中的每一个的均匀性足以对工作体积中的样品进行NMR实验 。