公开(公告)号：EP0828264A4

公开(公告)日：1999-05-19

申请号：EP97907429

申请日：1997-03-21

申请人： HITACHI MEDICAL CORP

发明人： HONMEI TAKAO ,  TAKESHIMA HIROTAKA ,  KAWANO HAJIME ,  TAKUMA YUTAKA ,  KOTABE MUNENORI ,  MAKI NAOKI ,  HARA NOBUHIRO ,  KAKUGAWA SHIGERU ,  HINO NORIAKI

IPC分类号： H01F13/00 ,  G01R33/3815 ,  H01F6/00

CPC分类号： H01F6/00 ,  G01R33/3815

摘要： A small-sized highly precise superconducting magnet device such that the magnetic flux changes little with the time and quenching hardly occurs. A magnetization adjusting method for uniformly magnetizing such a magnet device is also disclosed. The superconducting magnet device has a coolant container, a permanent current retaining medium which is provided in the container and generates a magnetic flux in a uniform magnetic field region (FOV), a static magnetic field generating means composed of a plurality of cylindrical bodies made up of superconducting composite plates, a cylindrical body supporting base which supports the cylindrical bodies, and temperature adjusting elements (not shown in Fig. 67) buried in the cylindrical bodies. The static magnetic field generating means is magnetized by induction magnetization and the magnetization value is adjusted by controlling the temperatures of the cylindrical bodies by means of the temperature adjusting elements.

摘要翻译： 一种小型高精度超导磁体装置，使得磁通量随时间变化很小，几乎不发生淬火。 还公开了一种用于均匀磁化这种磁体装置的磁化调整方法。 超导磁体装置具有冷却剂容器，设置在容器内并产生均匀磁场区域（FOV）的磁通量的永磁电流保持介质，由多个圆筒体构成的静磁场产生装置 的超导复合板，支撑圆柱体的圆柱体支撑基座和埋在圆柱体中的温度调节元件（图67中未示出）。 静磁场产生装置通过感应磁化磁化，并且通过温度调节元件控制圆柱体的温度来调节磁化值。

公开(公告)号：EP1214906A4

公开(公告)日：2006-02-22

申请号：EP00960998

申请日：2000-09-13

申请人： HITACHI MEDICAL CORP ,  MITSUBISHI ELECTRIC CORP

发明人： TAKESHIMA HIROTAKA ,  HONMEI TAKAO ,  TAZAKI HIROSHI ,  MORITSU KAZUKI ,  KURODA SHIGENORI ,  TANABE HAJIME

IPC分类号： G01R33/3873 ,  A61B5/055 ,  G01R33/38 ,  G01R33/3815 ,  G01R33/3875 ,  H01F6/00

CPC分类号： G01R33/3873 ,  G01R33/3806

摘要： An open-type magnet device for MRI includes a pair of upper and lower magnet assemblies, and shims are provided on opposite sides of their cooling containers and/or in holes passing through central portions of the cooling containers so as to facilitate providing an intense static magnetic field.

摘要翻译： 用于MRI的开放型磁体装置包括一对上下磁体组件，并且垫片设置在其冷却容器的相对侧和/或穿过冷却容器的中心部分的孔中，以便于提供高度均匀的 静磁场。

公开(公告)号：EP1340456A4

公开(公告)日：2005-11-09

申请号：EP01271111

申请日：2001-12-04

申请人： HITACHI LTD ,  HITACHI MEDICAL CORP

发明人： KAKUGAWA SHIGERU ,  AZUMA KATSUNORI ,  WAKUDA TSUYOSHI ,  WADAYAMA YOSHIHIDE ,  TAKESHIMA HIROTAKA ,  SAKAKIBARA KENJI ,  YATSUO TAKESHI ,  HONMEI TAKAO

IPC分类号： G01R33/38 ,  G01R33/3815 ,  G01R33/421 ,  A61B5/055

CPC分类号： G01R33/421 ,  G01R33/3806 ,  G01R33/3815

摘要： A magnet device provided with a shield current carrying means in which two sets of magneto static field generating sources for generating magnetic fields directed toward a first direction are disposed facing each other across a finite region and at least one set of the magnetostatic field generating sources are disposed on at least two almost concentric circles, wherein, on a first plane including a first axis, a second axis and a first point, the first point being a point of intersection between the first axis parallel to the first direction and passing the almost center of the shied current carrying means and the second axis crossing at right angles the first axis and spaced an almost equal distance from the two sets of the generating sources, positive and negative current carrying directions of one set out of two sets of magnetostatic field generating sources or those in respective sets are arranged alternately, when an angle formed by a half line at the n-th point position from the first point to extend toward the geometric center of a section of the shield current carrying means and the first axis is theta n, and the current carrying directions of the shield current carrying means are set in the order of increasing theta n.

公开(公告)号：EP1036541A4

公开(公告)日：2005-11-02

申请号：EP98956014

申请日：1998-12-01

申请人： HITACHI MEDICAL CORP ,  HITACHI LTD

发明人： KAKUGAWA SHIGERU ,  KITAMURA SHOUJI ,  HARA NOBUHIRO ,  KOMURA AKIYOSHI ,  HINO NORIAKI ,  KAWANO HAJIME ,  HONMEI TAKAO ,  TAKESHIMA HIROTAKA ,  YATSUO TAKESHI ,  TAZAKI HIROSHI

IPC分类号： G01R33/38 ,  G01R33/381 ,  G01R33/3815 ,  A61B5/055

CPC分类号： G01R33/3806 ,  G01R33/381 ,  G01R33/3815

摘要： A magnet apparatus having two static magnetic field-generating sources constituted by current-carrying means (13 to 16) arranged concentrically to generate a uniform magnetic field directed in the first direction, each static magnetic field generating source having at least four current-carrying means. Assume that a predetermined line (18) lies in a first plane including a first axis extending in parallel with the first direction and passing through near the centers of the current-carrying means, a second axis intersecting the first axis perpendicularly and existing nearly at an equal distance from the second static magnetic field-generating source. When the geometrical center of the cross section of each current-carrying means is projected onto the predetermined straight line (18) on the first plane, the forward and reverse current-carrying directions of the corresponding current-carrying means are alternatingly arranged for each of the static magnetic field-generating sources.

摘要翻译： 一种磁体装置，包括两组静磁场产生源，每组静电磁场产生源由同时设置的载流装置构成，以便产生沿第一方向引导的均匀的磁场，该磁场设有至少四个载流装置， 假设与第一方向平行的第一轴线的交叉点，并且基本上穿过载流装置的中心，并且第二轴线与第一轴线正交地交叉并且与两组静态的基本上相等的距离 磁场产生源作为第一点，并进一步假设包含在由第一轴，第二轴和第一点限定的第一平面上并通过第一点的第一直线，载流装置以这样的方式 当在第一平面上的载流装置的横截面的几何中心被投影在第二平面上时 在第一直线上，每个静磁场产生源的各个相应的突起处的电流承载装置的当前承载方向在第一直线上在正负方向上交替排列，从而具有开放空间感和可达到 在MRI装置中改进了被检查物体。

公开(公告)号：EP0883143A4

公开(公告)日：2003-04-02

申请号：EP97909678

申请日：1997-10-29

申请人： HITACHI MEDICAL CORP ,  MITSUBISHI ELECTRIC CORP

发明人： TAKESHIMA HIROTAKA ,  HONMEI TAKAO ,  KAWANO HAJIME ,  TAZAKI HIROSHI ,  YATSUO TAKESHI ,  KURODA SHIGENORI ,  TANABE HAJIME

IPC分类号： G01R33/38 ,  G01R33/3815 ,  G01R33/383 ,  G01R33/387 ,  G01R33/3873 ,  H01F6/00

CPC分类号： G01R33/3806 ,  G01R33/3815 ,  G01R33/383 ,  G01R33/3873

摘要： A superconducting magnetic device which corrects a stationary magnetic field in a measuring space by adjusting the flow of magnetic flux, in such a manner as to form one or a plurality of holes through a tabular ferromagnetic body constituting a magnetic shield for converging magnetic fluxes generated from superconductive coils. In the device, a connecting tube which supports two cooling containers for housing the superconducting coils is arranged on the rear side of the vertical center axis (Z axis) of the measuring space so that the coils can easily reach a patient. Further, the magnetic shield has an opening which is wider than a size of the superconductive magnet on its side face so that the superconductive magnet can be installed into the device through the opening after the magnetic shield is assembled.

摘要翻译： 一种超导磁体装置，包括由超导材料形成并且与它们之间的均匀磁场区域相对关系地布置的静态磁场发生源（3）。 用于支撑所述磁场产生源的支撑装置（21）设置在相对于穿过所述均匀磁场区域的中心的垂直轴线的后侧，以便于进入所述磁场区域。