公开(公告)号：WO1995014428A1

公开(公告)日：1995-06-01

申请号：PCT/US1994013749

申请日：1994-11-23

Applicant: MAGNA-LAB INC. ,  MARANDOS, Thomas, A.

Inventor： MAGNA-LAB INC.

IPC: A61B05/055

CPC classification number: G01R33/34084 ,  A61B5/0555 ,  A61B2017/00557 ,  G01R33/285

Abstract: An inflatable coil positioning device (10) includes a coil (38), a first inflatable sleeve (12) disposed radially about the coil (38) and a second inflatable sleeve (14) disposed radially within the coil (38). The first inflatable sleeve (12) and the second inflatable sleeve (14) each include at least two sections. The coil (38) is placed about a target section (22) of the patient to be imaged. The second inflatable sleeve (14) is inflated until the coil (38) is securely mounted on the target section (22). The mounted coil (38) and target section of the patient are then placed within a predetermined section of a nuclear magnetic resonance imaging magnet (24). The first inflatable sleeve (12) is inflated until the mounted coil (38) and target section (22) of the patient are securely retained within the predetermined section of the magnet (24).

Abstract translation: 可充气线圈定位装置（10）包括线圈（38），围绕线圈（38）径向设置的第一可充气套筒（12）和径向设置在线圈（38）内的第二可膨胀套筒（14）。 第一可充气套筒（12）和第二可充气套筒（14）各自包括至少两个部分。 围绕要成像的患者的目标部分（22）放置线圈（38）。 第二可充气套筒（14）被充气，直到线圈（38）牢固地安装在目标部分（22）上。 然后将安装的线圈（38）和患者的目标部分放置在核磁共振成像磁体（24）的预定部分内。 第一可膨胀套筒（12）被充气，直到患者的安装线圈（38）和目标部分（22）牢固地保持在磁体（24）的预定部分内。

公开(公告)号：WO1994007250A1

公开(公告)日：1994-03-31

申请号：PCT/US1993008506

申请日：1993-09-08

Applicant: MAGNA-LAB INC.

Inventor： MAGNA-LAB INC. ,  MINKOFF, Lawrence, A.

IPC: H01F01/00

CPC classification number: G01R33/383 ,  G01R33/3806

Abstract: A permanent magnet structure (10) includes a generally U-shaped frame made of a magnetic material and a pair of opposite polarity magnet members (22, 24) mounted on the opposed surfaces of the legs of the U. The connecting element (20) of the U which connects the legs (16, 18) is disposed at a sufficient distance from the magnets so that the resulting magnetic field passes substantially entirely between the magnets and through the arms and so that no substantially eddy currents are induced in the connecting element during imaging. Between the connecting element and the magnets, there is disposed a non-conductive, non-magnetic separating member (28) which contacts the two arms and tends to keep them apart. The separating member is so positioned relative to the connecting member (20) and the magnets (22, 24) that effects of the force between the two magnets and the force produced by the magnetic field passing through the arms and connecting element are counterbalanced. This results in a structure which is mechanically stable.

Abstract translation: 永磁体结构（10）包括由磁性材料制成的大致U形的框架和安装在U的腿的相对表面上的一对相反极性的磁性构件（22,24）。连接元件（20） 连接腿部（16,18）的U布置在离磁体足够的距离处，使得所得到的磁场基本上完全在磁体之间通过并且通过臂，并且使得在连接元件中不产生实质上的涡流 在成像期间。 在连接元件和磁体之间设置有非导电的非磁性分离件（28），它与两个臂接触并趋于使它们分开。 分离构件相对于连接构件（20）定位，并且影响两个磁体之间的力的磁体和由通过臂和连接元件的磁场产生的力抵消。 这导致机械稳定的结构。