公开(公告)号：WO2004029644A1

公开(公告)日：2004-04-08

申请号：PCT/GB2003/004200

申请日：2003-09-30

Applicant: OXFORD INSTRUMENTS PLC ,  MCDOUGALL, Ian, Leitch ,  SLADE, Robert, Andrew ,  HANLEY, Peter

Inventor： MCDOUGALL, Ian, Leitch ,  SLADE, Robert, Andrew ,  HANLEY, Peter

IPC: G01R33/38

CPC classification number: G01R33/3808 ,  G01R33/381 ,  G01R33/3815

Abstract: A magnet assembly comprising first and second sets of coils (1, 2) for generating respective magnetic fields, wherein the coils are constructed and arranged such that under working conditions, a first homogeneous region (3) can be generated within the envelope defined by the magnet 10 assembly and a second homogeneous region (4) can be generated outside the envelope, the resultant magnetic field in each region being sufficiently homogeneous to enable a NMR process to be performed on an object in the region.

Abstract translation: 一种磁体组件，包括用于产生相应磁场的第一和第二组线圈（1,2），其中所述线圈被构造和布置成使得在工作条件下，可以在由所述线圈限定的外壳内产生第一均匀区域（3） 可以在外壳外部产生磁体10组件和第二均匀区域（4），每个区域中的所得磁场足够均匀，以使得能够对该区域中的对象执行NMR处理。

公开(公告)号：WO02027345A1

公开(公告)日：2002-04-04

申请号：PCT/EP2001/010740

申请日：2001-09-17

IPC: G01R33/3815 ,  A61B5/055 ,  G01R33/38 ,  G01R33/385 ,  G01R33/421 ,  H01F6/04

CPC classification number: G01R33/3806 ,  G01R33/3815

Abstract: The invention relates to a vertical field type MRI apparatus provided with a superconducting coil system 20a, 20b for generating a substantially homogeneous magnetic field in an imaging volume 18 of the apparatus. The coil system includes a circular outer coil 28 and a supplementary coil 30 which is positioned in the same plane 32 as and within the outer coil, which coils conduct opposite currents. The ratio Da/Do of the diameter Da of the supplementary coil to the diameter Do of the outer coil lies between 0,7 and 0,9. Further coils 34 to 38, 40 to 46 for making the field even more homogeneous are preferably located on a conical surface 48, 50 within the first mentioned coils 28, 30 in such a manner that a recess is formed in which a conically shaped gradient coil system 52 can be accommodated, with the result that the expensive outer coil 28 and the supplementary coil 30 can be arranged at an as short as possible distance from the space for receiving the patient to be examined.

Abstract translation: 本发明涉及一种具有超导线圈系统20a，20b的垂直场型MRI装置，用于在该装置的成像体积18中产生基本均匀的磁场。 线圈系统包括圆形的外部线圈28和辅助线圈30，辅助线圈30位于与外部线圈内部和外部线圈中相同的平面32中，该线圈传导相反的电流。 辅助线圈的直径Da与外部线圈的直径Do的比Da / Do在0,7和0,9之间。 用于使场更均匀的另外的线圈34至38,40至46优选地位于第一提及的线圈28,30内的锥形表面48,50上，使得形成凹部，其中形成锥形梯度线圈 可以容纳系统52，结果是昂贵的外部线圈28和辅助线圈30可以布置在与用于接收待检查的患者的空间尽可能短的距离处。

公开(公告)号：WO01070109A1

公开(公告)日：2001-09-27

申请号：PCT/GB2001/001268

申请日：2001-03-22

IPC: G01R33/3815 ,  A61B5/055 ,  A61B6/00 ,  G01R33/30 ,  G01R33/38 ,  H01F5/00 ,  G01R33/28

CPC classification number: G01R33/3806 ,  A61B5/055 ,  A61B6/469 ,  A61B6/502 ,  G01R33/3815

Abstract: A magnetic resonance imaging assembly for generating a substantially homogenous magnetic field within an imaging-field-zone to produce an image of a region (anatomy-of-interest (2)) in a patient (1) comprises a bore into which the region of the patient can be placed, and a plurality of coaxially arranged coils (30a, b, c, d) surrounding the bore. The coils are arranged to generate a substantially homogenous magnetic field in the imaging-field-zone in the bore. The bore has a diameter (38) substantially larger than the axial length (39) of the bore. The large bore enables any region of the patient to be imaged to be placed in the region of highest homogeneity within the imaging field zone (11) and provides for access to the region of the patient being imaged to a health-care professional (5) during the imaging process.

Abstract translation: 用于在成像场区内产生基本均匀的磁场以产生患者（1）中的区域（兴趣解剖学（2））的图像的磁共振成像组件包括孔，所述区域 可以放置患者，并且包围围绕孔的多个同轴布置的线圈（30a，b，c，d）。 线圈布置成在孔中的成像场区中产生基本上均匀的磁场。 孔具有基本上大于孔的轴向长度（39）的直径（38）。 大孔使得患者的任何区域被成像以被放置在成像区域（11）内的最高同质性的区域中，并且提供对正被成像的患者区域进入保健专业人员（5） 在成像过程中。

公开(公告)号：WO1994001785A1

公开(公告)日：1994-01-20

申请号：PCT/US1993004574

申请日：1993-05-13

Applicant: DOTY SCIENTIFIC, INC. ,  DOTY, F., David

Inventor： DOTY SCIENTIFIC, INC.

IPC: G01R33/20

CPC classification number: G01R33/3854 ,  G01R33/3815 ,  G01R33/385 ,  G01R33/421 ,  G01R33/4215 ,  G01R33/422

Abstract: A structure provides a gradient field useful in magnetic resonance imaging. Axially aligned, solenoidal-like coils (405) are symmetrically distributed around the perimeter of the bore of a superconducting magnet in an MRI system so as to produce transverse gradients in the X and Y directions with exceptionally high efficiency and exceptionally low acoustic noise. Opposed solenoidal endcoils (401) may be added to reduce axial flux leakage by generating an axial quadrupolar field. Radially aligned coils may be positioned near each end of the axial coils to reduce leakage flux by adding a transverse quadrupolar field to form a resulting octopolar field. Typically, the solenoid-like coils have a mean radius of about 15 % of the radius of that of the imaging ellipsoidal region. A thick-walled stainless steel, copper and resin cylinder (701-703) may be used to simplify gradient shielding problems. Silver plated bronze or stainless steel sheet is used as an rf shield (717, 718).

Abstract translation: 结构提供了一种在磁共振成像中有用的梯度场。 轴向对准的螺线管状线圈（405）在MRI系统中围绕超导磁体的孔的周边对称地分布，以便以非常高的效率和非常低的声学噪声在X和Y方向上产生横向梯度。 可以添加相对的螺线管端圈（401）以通过产生轴向四极场来减小轴向磁通泄漏。 径向对准的线圈可以位于轴向线圈的每个端部附近，以通过添加横向四极场以形成所得的八极场来减少漏磁通。 通常，螺线管状线圈的平均半径为成像椭圆形区域的半径的约15％。 可以使用厚壁不锈钢，铜和树脂圆筒（701-703）来简化梯度屏蔽问题。 银镀青铜或不锈钢板作为rf屏蔽（717,718）。

公开(公告)号：WO1993004492A1

公开(公告)日：1993-03-04

申请号：PCT/US1992007087

申请日：1992-08-19

Applicant: MEDICAL SCIENCE PRODUCTS, INC. ,  HED, Aharon, Zeev

Inventor： MEDICAL SCIENCE PRODUCTS, INC.

IPC: H01F01/00

CPC classification number: G01R33/3815 ,  H01F6/00

Abstract: Temporal and spatial modulation of magnetic fields created around solenoids and within their hollow is effected using specially configured and movable superconducting elements as well as switchable superconducting elements. Solenoids are provided with external magnetic fields which are uniquely shaped and controlled either mechanically or electrically. Hoop stress is reduced in the winding of the solenoids to thereby facilitate SMES systems. The magnetic fields provided can be modulated spatially and temporally. This is provided by the following sequence of steps. First a coil (22) is provided having a predetermined coil length and formed of at least one layer of a multiplicity of generally helical turns of a conductor capable of generating a magnetic field. Secondly the outer magnetic field component is shaped at least in part by an annular superconducting means (21) to confine the outer magnetic field component between the superconductor means (21) and the coil (22). Thirdly an electric current is passed through the coil to generate the solenoid magnetic field.

公开(公告)号：WO1991001564A1

公开(公告)日：1991-02-07

申请号：PCT/DE1990000517

申请日：1990-07-10

Applicant: BRUKER ANALYTISCHE MESSTECHNIK GMBH ,  ROTH, Gerhard ,  TSCHOPP, Werner

Inventor： BRUKER ANALYTISCHE MESSTECHNIK GMBH

IPC: H01F07/22

CPC classification number: G01R33/3815 ,  H01F6/06

Abstract: A superconducting intense-field magnetic coil for producing a magnetic field comprises one or more approximately rotationally symmetrical, hollow cylindrical winding regions composed of layers of windings of a current-carrying superconducting wire. Radial components of the magnetic field which produce axial Lorentz forces as well as an increase in the axial pressures in the winding layers are present in the axial end region of at least one winding region. The invention is characterized in that, in the axial end region of at least one winding region, the current density in at least one winding layer (S3, S4) is less than the normal current density in the adjacent end region, and that the maximal axial Lorentz force and the maximal axial pressure in this winding layer are therefore maintained within permissible limits.

公开(公告)号：WO2019134533A1

公开(公告)日：2019-07-11

申请号：PCT/CN2018/122526

申请日：2018-12-21

Applicant: 中国科学院电工研究所

Inventor： 王秋良 ,  许建益 ,  胡新宁

IPC: H01F6/04

CPC classification number: G01R33/3815 ,  H01F6/04

Abstract: 一种智能化无液氦磁共振全身成像超导磁体系统，包括：真空容器（8），真空容器内的径向内侧空间设有主磁场超导线圈（1），真空容器内的径向外侧空间设有屏蔽磁场超导线圈（2），主磁场超导线圈与屏蔽磁场超导线圈之间的空置区域放置热管储气罐（4）；氦储液盒（5），与储液盒储气罐（6）连通，同时通过氦自激振荡热管（3）连接主磁场超导线圈或屏蔽磁场超导线圈，氦自激振荡热管还连通热管储气罐；制冷机（9），其通过热传导部件自动插拔组件（10）固定于真空容器上；与制冷机连接的第一热传导部件与热辐射屏组件紧密接触，与制冷机连接的第二热传导部件与氦储液盒紧密接触。该系统克服了现有超导磁体系统冷却性能不高，制冷机一旦停止工作后漏热过大导致磁体快速失温，以及超导磁体系统的维护复杂可靠性差的问题。

公开(公告)号：WO2017193129A1

公开(公告)日：2017-11-09

申请号：PCT/US2017/031568

申请日：2017-05-08

Applicant: THE FLORIDA STATE UNIVERSITY RESEARCH FOUNDATION, INC.

Inventor： HAHN, Seungyong ,  LARBALESTIER, David

IPC: H01F6/00 ,  C04B35/45 ,  H01B12/00 ,  H01L39/00 ,  H02J1/10

CPC classification number: H01F6/008 ,  G01R33/3815 ,  H01F6/006 ,  H01F6/06

Abstract: An active feedback controller for a power supply current of a no-insulation (NI) high-temperature superconductor (HTS) magnet to reduce or eliminate the charging delay of the NI HTS magnet and to linearize the magnet constant.

Abstract translation: 一种用于无绝缘（NI）高温超导体（HTS）磁体的电源电流的有源反馈控制器，用于减少或消除NI HTS磁体的充电延迟并使磁体线性化 恒定。

公开(公告)号：WO2017149239A1

公开(公告)日：2017-09-08

申请号：PCT/FR2017/050448

申请日：2017-02-28

Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

Inventor： GUITARD, Pierre-André ,  FERMON, Claude ,  PANNETIER-LECOEUR, Myriam ,  JASMIN-LEBRAS, Guénaëlle

IPC: G01R33/32 ,  G01R33/09 ,  G01R33/36 ,  G01R33/381 ,  G01R33/46 ,  G01R33/30

CPC classification number: G01R33/46 ,  G01R33/091 ,  G01R33/093 ,  G01R33/098 ,  G01R33/302 ,  G01R33/32 ,  G01R33/3621 ,  G01R33/381 ,  G01R33/3815

Abstract: L'invention a pour objet un système (100) de spectroscopie RMN pour l'étude d'au moins une région (202) d'un échantillon (102) à analyser comprenant : • un transducteur (101) magnetorésistif à couches planaires superposées recevant un signal de réponse dudit échantillon; • des moyens adaptés pour faire circuler à travers ledit transducteur (101) un courant alternatif à une fréquence d'alimentation f c ; • des moyens de génération d'un champ magnétique H 0 constant et uniforme dans toute une zone d'intérêt où sont placés l'échantillon (102) et le transducteur (101); • une bobine d'excitation (103) configurée pour générer un champ magnétique H 1 uniforme dans toute la zone d'intérêt variable à une fréquence de résonance f 1 ; Le champ H 0 est sensiblement perpendiculaire aux couches du transducteur (101). Le système comporte en outre des moyens de réglage pour assurer l'orthogonalité entre le champ H 0 et les couches planaires et des moyens de détection d'un signal à fréquence f c - f 1 , f 1 - f c ou f c + f 1 .

Abstract translation:

本发明涉及一种系统和egrave;我（100），用于解样品的至少一个RDé区域（202）的é研究NMR光谱（102） ＆agrave; 分析包括：·换能器（101）具有磁反应性; 从所述样品接收响应信号的叠加平面层; •适用于流通的手段＆agr; 通过所述换能器（101）产生交流电流 供电频率f c; •用于在感兴趣的区域产生恒定且均匀的磁场H <0>的装置。 放置在样品（102）和换能器（101）中; •配置的励磁线圈（103）éE要克é否E RER一个磁场é蜱ħ<子> 1 整个INT E区均匀; R＆ecirc;吨变量＆agrave; 发生的频率f1; 场H 0基本上垂直于换能器（101）的各层。 该系统还包括用于提供正交性的调整装置。 场H 0与平面层之间以及用于检测信号g a的装置 FRéquence˚F<子> v - ˚F<子> 1 F <子> 1 - ˚F<子> v 或f <子> v + f _{1 。}

公开(公告)号：WO2016182746A1

公开(公告)日：2016-11-17

申请号：PCT/US2016/029713

申请日：2016-04-28

Applicant: GENERAL ELECTRIC COMPANY

Inventor： LASKARIS, Evangelos ,  CHEN, William ,  JIANG, Longzhi ,  ZHANG, Tao ,  XI, Haixia ,  LI, Jun

IPC: H01F6/04 ,  H02K55/00 ,  G01R33/3815

CPC classification number: G01R33/3804 ,  F25B2400/17 ,  G01R33/3815 ,  H01F6/04 ,  H02K55/00 ,  Y02E40/62

Abstract: A superconducting magnet cooling system is disclosed. The superconducting magnet cooling system includes a superconducting magnet; a liquid cryogen vessel for cooling the superconducting magnet; a heat exchanger device in fluid communication with the liquid cryogen vessel; a cryorefrigerator for heat exchange with the heat exchanger device; and a flexible connection device having high thermal conductivity and thermally connecting the cryorefrigerator and the heat exchanger device to provide vibration isolation of the cryorefrigerator from the heat exchange device.

Abstract translation: 公开了超导磁体冷却系统。 超导磁体冷却系统包括超导磁体; 用于冷却超导磁体的液体冷冻剂容器; 与液体冷冻剂容器流体连通的热交换器装置; 用于与热交换器装置进行热交换的冷冻机; 以及柔性连接装置，其具有高导热性并热连接冷冻机和热交换器装置，以提供冷冻机与热交换装置的隔振。