专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

EP1043598B1 Magnetic field stabilization method, magnetic field generating apparatus and magnetic resonance imaging apparatus 有权
标题翻译：稳定的磁场装置，用于产生一个磁场的方法和用于通过磁共振图像形成的装置
公开(公告)号：EP1043598B1
公开(公告)日：2006-07-26
申请号：EP00302957.6
申请日：2000-04-07
申请人： GE YOKOGAWA MEDICAL SYSTEMS, LTD.
发明人： Nagano, Shigeo , Suzuki, Tsunemoto , Uno, Hideaki , Inoue, Yuji , Higa, Yoshifumi , Tsujii, Yoshiak
IPC分类号： G01R33/389
CPC分类号： G01R33/389 , G01R33/383

2. 发明授权

EP0985934B1 Opposed magnet-type magnetic circuit assembly with permanent magnets 失效
标题翻译：与相对的永久磁铁的磁路组件
公开(公告)号：EP0985934B1
公开(公告)日：2004-10-20
申请号：EP99402778.7
申请日：1996-08-27
申请人： SHIN-ETSU CHEMICAL CO., LTD. , GE YOKOGAWA MEDICAL SYSTEMS, LTD.
发明人： Ohashi, Ken , Yoneda, Yuhito , Miyata, Koji , Inoue, Yuji
IPC分类号： G01R33/383 , G01R33/3873 , G01R33/38
CPC分类号： G01R33/383 , G01R33/3873

3. 发明公开

EP1063533A3 Method of manufacturing an MRI gradient coil 审中-公开
标题翻译：一种制造梯度线圈的磁共振成像的方法
公开(公告)号：EP1063533A3
公开(公告)日：2002-05-22
申请号：EP00304859.2
申请日：2000-06-08
申请人： GE Yokogawa Medical Systems Ltd.
发明人： Goto, Takao , Inoue, Yuji
IPC分类号： G01R33/34 , G01R33/385
CPC分类号： G01R33/385 , Y10T29/4902
摘要： In order to obtain good linearity without reducing efficiency in generating a magnetic field, a winding pattern of one semicircular spiral is assumed; an electric current distribution is expressed by a continuous function J x (x) such that an x-axis electric current distribution profile does not lie in both the positive and negative polarities; parameters of the continuous function J x (x) are optimized so that desired linearity can be obtained; and a position of a straight-line portion 1Xt1L of the semicircular spiral is determined so that the electric current distribution profile given by the optimized continuous function J x (x) is fulfilled. The resulting pattern is symmetrically duplicated to generate a gradient coil unit 1Xt, and a plurality of the gradient coil units 1Xt are combined to form a gradient coil.

4. 发明公开

EP1063533A2 Method of manufacturing an MRI gradient coil 审中-公开
标题翻译： Verfahren zur Herstellung einer Gradientenspulefürdie bildgebende magnetische Resonanz
公开(公告)号：EP1063533A2
公开(公告)日：2000-12-27
申请号：EP00304859.2
申请日：2000-06-08
申请人： GE Yokogawa Medical Systems Ltd.
发明人： Goto, Takao , Inoue, Yuji
IPC分类号： G01R33/34
CPC分类号： G01R33/385 , Y10T29/4902
摘要： In order to obtain good linearity without reducing efficiency in generating a magnetic field, a winding pattern of one semicircular spiral is assumed; an electric current distribution is expressed by a continuous function J x (x) such that an x-axis electric current distribution profile does not lie in both the positive and negative polarities; parameters of the continuous function J x (x) are optimized so that desired linearity can be obtained; and a position of a straight-line portion 1Xt1L of the semicircular spiral is determined so that the electric current distribution profile given by the optimized continuous function J x (x) is fulfilled. The resulting pattern is symmetrically duplicated to generate a gradient coil unit 1Xt, and a plurality of the gradient coil units 1Xt are combined to form a gradient coil.
摘要翻译：为了在不降低产生磁场效率的情况下获得良好的线性度，假设有一个半圆形螺旋的绕组图案; 电流分布由连续函数Jx（x）表示，使得x轴电流分布分布不在正极性和负极性两者之间; 连续函数Jx（x）的参数被优化，从而可以获得期望的线性; 并且确定半圆形螺旋线的直线部分1Xt1L的位置，使得由优化的连续函数Jx（x）给出的电流分布曲线被满足。所得到的图案被对称地重复以产生梯度线圈单元1Xt，并且多个梯度线圈单元1Xt被组合以形成梯度线圈。

5. 发明公开

EP1043598A1 Magnetic field stabilization method, magnetic field generating apparatus and magnetic resonance imaging apparatus 有权
标题翻译：稳定的磁场装置，用于产生一个磁场的方法和用于通过磁共振图像形成的装置
公开(公告)号：EP1043598A1
公开(公告)日：2000-10-11
申请号：EP00302957.6
申请日：2000-04-07
申请人： GE YOKOGAWA MEDICAL SYSTEMS, LTD.
发明人： Nagano, Shigeo , Suzuki, Tsunemoto , Uno, Hideaki , Inoue, Yuji , Higa, Yoshifumi , Tsujii, Yoshiak
IPC分类号： G01R33/389
CPC分类号： G01R33/389 , G01R33/383
摘要： In order to provide a magnetic field stabilization method, magnetic field generating apparatus and magnetic resonance imaging apparatus that is not affected by the temperature distribution in an installation space, in stabilizing a magnetic field of a magnetic field generating apparatus (2) having a pair of permanent magnets facing each other with a space interposed and yokes constituting a magnetic circuit for the permanent magnets, heat quantities to be applied (122,124) to a plurality of positions are individually controlled (172,174) based on the temperatures detected at a plurality of positions (154,158) on the yoke to stabilize the respective temperatures at the plurality of positions.
摘要翻译：为了提供一个磁场稳定方法，磁场产生设备，和磁共振成像设备并没有在安装空间受温度分布，在稳定具有一对（2）的磁场产生装置的磁场彼此面对插入的空间，并构成为永久磁铁的磁路轭的永磁体中，待施加的热量的量（122,124），以基于在位置的多个检测到的温度位置的多元性被单独控制（172174）（ 154.158）在所述磁轭以在位置的多元性稳定respectivement温度。

6. 发明公开

EP0985934A1 Opposed magnet-type magnetic circuit assembly with permanent magnets 失效
标题翻译：永磁体磁铁
公开(公告)号：EP0985934A1
公开(公告)日：2000-03-15
申请号：EP99402778.7
申请日：1996-08-27
申请人： SHIN-ETSU CHEMICAL CO., LTD. , GE YOKOGAWA MEDICAL SYSTEMS, LTD.
发明人： Ohashi, Ken , Yoneda, Yuhito , Miyata, Koji , Inoue, Yuji
IPC分类号： G01R33/383 , G01R33/3873 , G01R33/38
CPC分类号： G01R33/383 , G01R33/3873
摘要： An opposed-magnet magnetic circuit assembly with permanent magnets comprising a pair of permanent magnets (111, 114) in the form of a plate oppositely facing up and down each to the other keeping a magnetic-field gap space therebetween, a pair of field-adjustment plates (112, 113) mounted on the surface of the permanent magnet to face the magnetic-field gap space, a pair of back yokes (110, 115) each mounted on the surface of the permanent magnet opposite to the magnetic-field gap space and a set of connecting yokes magnetically connecting the back yokes to form a closed magnetic circuit, characterized in that it comprises :

a) two and only two connecting yokes (108, 109) oppositely facing each to the other, each having the form of a column having a cross section in the center portion which is smaller than the cross section in the upper and lower end portions ;
b) each of said back yokes (110, 115) having the form of a generally polygonal plate having at least six corners; and
c) each of the permanent magnets (111, 114) having the form of a circular or elliptic plate, of which the aspect ratio is in the range from 0.5 to 2.
摘要翻译：一种具有永久磁铁的对置磁体磁路组件，包括一对永磁体（111,114），所述一对永久磁铁（111,114）的形式相互面对，所述永磁体彼此相对地彼此保持在其间的磁场间隙空间，安装在永磁体表面上以面对磁场间隙空间的调整板（112,113），一对安装在与磁场间隙相反的永磁体表面上的后轭（110,115）空间和一组磁性连接后轭以形成闭合磁路的连接轭，其特征在于，其包括：a）两个且仅两个彼此相对的连接轭（108,109），每个连接轭各自具有中心部的截面小于上端部和下端部的截面的列; b）每个所述后轭（110,115）具有至少六个角的大致多边形板的形式; 和c）具有圆形或椭圆形板形式的每个永磁体（111,114），其长宽比在0.5至2的范围内。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式