公开(公告)号：WO2003029834A1

公开(公告)日：2003-04-10

申请号：PCT/US2002/028781

申请日：2002-09-09

Applicant: VARIAN, INC.

Inventor： WONG, Wai, Ha ,  FENG, I-Jaung

IPC: G01R33/34

CPC classification number: G01R33/34053 ,  G01R33/34007 ,  G01R33/34023 ,  G01R33/34061 ,  G01R33/34092 ,  G01R33/341

Abstract: A phase-shifted coil comprises nested concentric spiral portions, the terminals of which are progressively offset. Separately tuned concentric such coils of different dimensions exhibit relatively close intercoil clearance in one dimension and relatively large clearances in the orthogonal dimension provide different flux return characteristics for selective RF coupling.

Abstract translation: 相移线圈包括嵌套的同心螺旋部分，其末端逐渐偏移。 不同尺寸的单独调谐的同心这样的线圈在一个维度上表现出相对接近的线圈间隙，并且在正交维度中相对较大的间隙为选择性RF耦合提供不同的通量返回特性。

公开(公告)号：WO2003016935A2

公开(公告)日：2003-02-27

申请号：PCT/FR2002/002891

申请日：2002-08-16

Applicant: INNOV-PRO ,  LOCATELLI, Marcel ,  MARTIN, Jean-Pierre

Inventor： LOCATELLI, Marcel ,  MARTIN, Jean-Pierre

IPC: G01R33/34

CPC classification number: G01R33/34053 ,  G01R33/34046 ,  G01R33/383

Abstract: La présente invention concerne les dispositifs pour l'étude d'un matériau par le procédé de la RMN. Le dispositif selon l'invention se caractérise essentiellement par le fait qu'il comporte un aimant permanent 21 présentant une aimantation de direction Nord-Sud 22 sensiblement perpendiculaire à son axe longitudinal 23, au moins une antenne RF 24 constituée par au moins une boucle fermée 27 sensiblement située dans un plan parallèle à la direction Nord-Sud, la boucle fermée entourant l'aimant 21, les deux bornes de connexion 25, 26 étant constituées par deux points 28, 29 de la boucle fermée 27 situés sur une droite 30 coupant la boucle en deux parties sensiblement égales. Application, notamment mais non exclusivement, dans le domaine de l'industrie pétrolière pour déterminer par exemple la quantité d'eau dans la roche entourant la paroi d'un puits, la distribution de la porosité de cette roche et/ou sa perméabilité, etc.

Abstract translation: 本发明涉及用于材料的NMR分析的装置。 根据本发明，该装置的特征在于它包括：具有或多或少垂直于其纵向轴线（23）的南北磁化（22）的永磁体（21）; 以及由至少一个闭合回路（27）组成的至少一个RF天线（24），其基本上位于平行于南北方向的平面中。 所述闭环围绕磁体（21），并且两个连接端子（25,26）包括在闭环（27）上的两个点（28,29），它们位于直线（30）上，该直线将环分成两个 或多或少等份。 本发明特别是，但并不排他地适用于石油工业，以便确定例如围绕井壁的岩石中的水量，所述岩石中的孔隙率分布和/或其渗透性等 。

公开(公告)号：WO0156469A3

公开(公告)日：2002-03-28

申请号：PCT/US0103346

申请日：2001-02-01

Applicant: SURGIVISION INC

Inventor： LARDO ALBERT C ,  MCVEIGH ELLIOT R ,  HALPERIN HENRY R

IPC: G01R33/28 ,  G01R33/34 ,  H01Q1/36 ,  H01Q1/40 ,  H01Q1/44 ,  H01Q11/08 ,  A61B5/055 ,  A61B10/00

CPC classification number: G01R33/34084 ,  G01R33/285 ,  G01R33/287 ,  G01R33/34053 ,  H01Q1/36 ,  H01Q1/362 ,  H01Q1/40 ,  H01Q1/44 ,  H01Q11/08

Abstract: The invention describes a system, method, and means for an MRI transseptal needle that can be visible on an MRI, can act as an antenna and receive MRI signals from surrounding subject matter to generate high-resolution images and can enable real-time active needle tracking during MRI guided transseptal puncture procedures.

Abstract translation: 本发明描述了可以在MRI上可见的用于MRI透视针的系统，方法和装置，可用作天线并从周围主题接收MRI信号以产生高分辨率图像，并且可以实现实时有源针 MRI引导下经皮穿刺手术中的跟踪。

公开(公告)号：WO0142807A3

公开(公告)日：2002-02-21

申请号：PCT/IL0000785

申请日：2000-11-24

Applicant: TOPSPIN MEDICAL ISRAEL LTD ,  GOLAN EREZ

Inventor： GOLAN EREZ

IPC: G01R33/28 ,  A61B5/055 ,  A61M25/00 ,  G01R33/34 ,  G01R33/383 ,  G01V3/32 ,  H01F5/00 ,  G01R33/44

CPC classification number: G01R33/34053 ,  G01R33/34084 ,  G01V3/32

Abstract: A device and method for performing NMR measurements and imaging in a surrounding medium are presented. The method utilizes the detection of magnetic resonance signals from within at least one region of a primary, substantially non-homogeneous, external magnetic field.

Abstract translation: 介绍了一种用于在周围介质中进行NMR测量和成像的装置和方法。 该方法利用从主要的，基本上非均匀的外部磁场的至少一个区域内的磁共振信号的检测。

公开(公告)号：WO99027846A2

公开(公告)日：1999-06-10

申请号：PCT/IB1998/002111

申请日：1998-11-25

IPC: G01R33/36 ,  A61B5/055 ,  G01R33/34 ,  A61B5/00

CPC classification number: G01R33/34084 ,  G01R33/34053 ,  G01R33/34069 ,  G01R33/3678

Abstract: A coil assembly for use in MRI imaging includes a harness having a base. First and second arm members extend from a first side of the base and above and over the base and third and fourth arm members extend from a second side of the base and above and over the base. A first cross member extends between the first arm member and the second arm member and a second cross member extends between the third arm member and the fourth arm member. An end of the first arm member is aligned with and detachably connected to an end of the third arm member and an end of the second arm member is aligned with and detachably connected to an end of the fourth arm member. First and second coil members each extend along the harness. The first coil member may be a saddle coil and the second coil member may be a solenoid coil configured to establish a quadrature arrangement.

Abstract translation: 用于MRI成像的线圈组件包括具有底座的线束。 第一和第二臂构件从基部的第一侧面延伸并且在基部上方和上方延伸，第三和第四臂构件从基部的第二侧和基部的上方延伸。 第一横向构件在第一臂构件和第二臂构件之间延伸，并且第二横向构件在第三臂构件和第四臂构件之间延伸。 第一臂构件的端部与第三臂构件的端部对准并可拆卸地连接，并且第二臂构件的端部与第四臂构件的端部对准并可拆卸地连接。 第一和第二线圈构件各自沿着线束延伸。 第一线圈构件可以是鞍形线圈，并且第二线圈构件可以是构造成建立正交布置的螺线管线圈。

公开(公告)号：WO99024845A1

公开(公告)日：1999-05-20

申请号：PCT/US1998/023732

申请日：1998-11-05

IPC: G01R33/34

CPC classification number: G01R33/34053 ,  G01R33/34023 ,  G01R33/34061 ,  G01R33/34092 ,  G01R33/56536

Abstract: A method and apparatus which utilizes the hysteritic behavior of type II superconductors for reducing the effective magnetic susceptibility of high temperature superconducting materials used close to the sample region in nuclear magnetic system probes. The method is particularly applicable to receiver coils. Reducing the magnetic susceptibility of superconducting receiver coils enables the improved sensitivity they inherently provide to be realized without loss of resolution resulting from line broadening caused by susceptibility discontinuities of materials near the sample region of the probe.

Abstract translation: 利用II型超导体的迟滞行为降低在核磁系统探针中靠近样品区域使用的高温超导材料的有效磁化率的方法和装置。 该方法特别适用于接收器线圈。 降低超导接收器线圈的磁化率使得能够实现它们固有地提供的改进的灵敏度，而不会由于由探针的样品区域附近的材料的敏感性不连续性引起的线宽增加而导致的分辨率损失。

公开(公告)号：WO99019739A1

公开(公告)日：1999-04-22

申请号：PCT/DE1998/003046

申请日：1998-10-13

IPC: A61B5/055 ,  A61B5/06 ,  A61F2/00 ,  A61F2/86 ,  G01R33/28 ,  G01R33/34

CPC classification number: A61F2/86 ,  A61B5/055 ,  A61B5/06 ,  A61B5/411 ,  A61B5/4547 ,  A61F2220/005 ,  A61F2220/0058 ,  A61F2230/0021 ,  A61F2230/0058 ,  A61F2230/0086 ,  A61F2230/0091 ,  A61F2250/0045 ,  G01R33/285 ,  G01R33/286 ,  G01R33/34053 ,  G01R33/34084

Abstract: The invention relates to an MR imaging method for representing and determining the position of a medical device inserted in an examination object, and to a medical device used in the method. In accordance with the invention, the device (11) comprises at least one passive oscillating circuit with an inductor (2a, 2b) and a capacitor (3a, 3b). The resonance frequency of this circuit substantially corresponds to the resonance frequency of the injected high-frequency radiation from the MR system. In this way, in a locally limited area situated inside or around the device, a modified signal answer is generated which is represented with spatial resolution.

Abstract translation: 本发明涉及一种用于表示和确定插入到检查对象的医疗装置和用于在该方法使用的医疗装置的位置的磁共振成像方法。 根据本发明，该装置（11）与电感器的至少一个无源振荡电路（2A，2B）和一个电容器（3A，3B），其共振频率基本等于所述MR系统的辐射高频辐射的谐振频率。 其特征在于改变的信号响应以局部限制区域中产生在或者被以空间分辨表示的装置周围。

公开(公告)号：WO1997028465A1

公开(公告)日：1997-08-07

申请号：PCT/US1997001348

申请日：1997-01-28

Applicant: THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS

Inventor： THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS ,  PECK, Timothy, L. ,  OLSON, Dean, L. ,  SWEEDLER, Jonathan, V. ,  WEBB, Andrew, G. ,  MAGIN, Richard, L.

IPC: G01V03/00

CPC classification number: G01R33/56536 ,  G01R33/302 ,  G01R33/34053 ,  G01R33/341 ,  G01R33/5604

Abstract: An apparatus and method for compensation of magnetic susceptibility variation in NMR microspectroscopy detection microcoils. NMR detection microcoils are formed with side-by-side windings (18) in order to approximate a uniform cylindrical sheet coil. The wire may have a thin layer of insulation in order to prevent shorting between adjacent turns, or (if the wire diameter is small enough) uninsulated wire may be wound with the adjacent turns touching without fear of shorting between coil turns. Additionally, a susceptibility matching medium (40), such as a perfluorinated hydrocarbon, may be placed around the microcoil to minimize susceptibility-induced variations in the B0 magnetic field (10).

Abstract translation: NMR显微光谱检测微线圈磁化率变化的装置和方法。 NMR检测微线圈由并排绕组（18）形成，以便接近均匀的圆柱形片状线圈。 导线可以具有薄的绝缘层，以防止相邻匝之间的短路，或者（如果导线直径足够小），非绝缘线可以在相邻匝之间缠绕而不用担心线圈匝之间的短路。 此外，诸如全氟化烃的敏感性匹配介质（40）可以放置在微线圈周围以最小化磁化率诱导的B0磁场（10）中的变化。

公开(公告)号：WO1989012422A1

公开(公告)日：1989-12-28

申请号：PCT/JP1989000589

申请日：1989-06-12

Applicant: OTSUKA ELECTRONICS CO., LTD. ,  TAKAMURA, Susumu ,  NAKAMURA, Takashi ,  OKAWAUCHI, Makoto ,  TODA, Harumi ,  KANKI, Ichiro ,  YOSHIDA, Minoru ,  IMOTO, Toshiyuki ,  NEGAYAMA, Naomi ,  OKA, Koichi

Inventor： OTSUKA ELECTRONICS CO., LTD.

IPC: A61B05/05

CPC classification number: G01R33/30 ,  A61B5/055 ,  G01R33/34007 ,  G01R33/34053 ,  G01R33/341 ,  G01R33/465 ,  Y10T436/24

Abstract: For NMR measurements, a coil (7) for receiving free induction signals of NMR is brought into contact with or close to one side of a living tissue (1) placed in a perfusate (4) while the receiving coil (7) is kept totally or partially out of contact with the perfusate (4). According to the above measuring method in which the receiving coil (7) is somewhat out of contact with the perfusate (4), electromagnetic effects due to a change in the perfusate (4) are decreased so that free induction signals are not buried in the noise, making it possible to take measurement maintaining favorable sensitivity. Even in the case of a large organ, the receiving coil (7) is brought into contact with or close to one surface of the organ to take measurement. Therefore, signals are obtained only from a region of uniform magnetic field, and free induction signals of high resolution is obtained.

Abstract translation: 对于NMR测量，用于接收NMR的自由感应信号的线圈（7）与放置在灌注液（4）中的活组织（1）的一侧接触或接近，同时接收线圈（7）保持完全 或部分不与灌注液（4）接触。 根据上述接收线圈（7）与灌注液（4）有些不接触的测量方法，由于灌注液（4）的变化引起的电磁效应降低，使得自由感应信号不被埋在 噪音，使测量维持良好的灵敏度成为可能。 即使在大器官的情况下，接收线圈（7）与器官的一个表面接触或接近，以进行测量。 因此，仅从均匀磁场的区域获得信号，并且获得高分辨率的自由感应信号。

公开(公告)号：WO2019008173A1

公开(公告)日：2019-01-10

申请号：PCT/EP2018/068444

申请日：2018-07-06

Applicant: COSGROVE, Terence ,  PRESCOTT, Stuart Walker ,  PETTMAN, Roger Bruce

Inventor： COSGROVE, Terence ,  PRESCOTT, Stuart Walker ,  PETTMAN, Roger Bruce

IPC: G01N24/08 ,  G01R33/31 ,  G01R33/34 ,  G01R33/36 ,  G01R33/38 ,  G01R33/385 ,  G01R33/58 ,  G01R33/383

CPC classification number: G01N24/08 ,  G01R33/31 ,  G01R33/34007 ,  G01R33/34053 ,  G01R33/3607 ,  G01R33/3621 ,  G01R33/3806 ,  G01R33/383 ,  G01R33/385 ,  G01R33/583

Abstract: A portable NMR probe for the analysis of dispersions, the portable NMR probe comprising: a base part; a detachable probe assembly detachably mounted on the base part and electrically connected to the base part, the detachable probe assembly comprising: a housing; and a radio-frequency coil assembly received in the housing, the radio-frequency coil assembly comprising an RF coil support that has a channel for receiving an NMR sample, and an RF coil wound around the RF coil support for transmitting radio-frequency pulses to the NMR sample and for detecting magnetic resonance responses from the NMR sample; and a field magnet arranged to generate a magnetic field in the detachable probe assembly.