公开(公告)号：US08698499B2

公开(公告)日：2014-04-15

申请号：US12516077

申请日：2007-09-19

申请人： Mitsushi Abe ,  Hiroyuki Watanabe ,  Hirotaka Takeshima

发明人： Mitsushi Abe ,  Hiroyuki Watanabe ,  Hirotaka Takeshima

IPC分类号： G01R33/381 ,  G01R33/3815

CPC分类号： G01R33/3806 ,  G01R33/3815 ,  H01F7/202

摘要： An electromagnet device which generates magnetic field in the direction perpendicular to the inserting direction of an inspection subject is reduced in size and weight by removing unnecessary arrangement as much as possible. A magnetic resonance imaging device is also provided. The electromagnet device comprises a first coil (31) through which a first circular current (J1) circulates forward, a second coil (32) through which a second circular current (J2) circulates reversely, and a coil group (30) through which a plurality of circular currents (J3-J6) circulate alternately forward and reversely. The first coil (30), the second coil (32) and the coil group (30) are arranged in this order to increase the angle of elevation θ (θ1

摘要翻译： 通过尽可能地去除不必要的布置，在与检查对象的插入方向垂直的方向上产生磁场的电磁装置的尺寸和重量减小。 还提供了一种磁共振成像装置。 电磁体装置包括第一线圈（31），第一圆形电流（J1）向前循环;第二线圈（32），第二圆形电流（J2）通过该线圈反向循环;线圈组（30） 多个圆形电流（J3-J6）交替地向前和向后循环。 第一线圈（30），第二线圈（32）和线圈组（30）以此顺序排列以增加仰角; （＆Thetas; 1 <＆thetas; 2 <＆thetas; 3）和不包括第二线圈（32）和线圈组（30）的空白区域（S）存在于仰角和角度之间的角度区域中; 2和 ＆thetas; 3。

公开(公告)号：US08581586B2

公开(公告)日：2013-11-12

申请号：US12933255

申请日：2009-03-27

申请人： Mitsushi Abe ,  Hirotaka Takeshima

发明人： Mitsushi Abe ,  Hirotaka Takeshima

IPC分类号： G01V3/00

CPC分类号： G01R33/385

摘要： A coil pattern calculation method includes calculating a current potential at each contact between finite surface elements forming each of the coil surfaces based on an initial value of an input current potential distribution, and, for each of the coil surfaces, repeatedly calculating the current potential alternately and, under each magnetic field condition, determining a current potential distribution that generates a magnetic field falling within the range of allowable error for each target magnetic field so that a surface current represented by the current potential will become close to a target magnetic field distribution set for each of the finite surface elements; and determining a coil pattern from the contour lines of the determined current potential distribution.

摘要翻译： 线圈图案计算方法包括基于输入电流分布的初始值来计算形成每个线圈表面的有限表面元件之间的每个接触处的电流电位，并且对于每个线圈表面，交替重复地计算电流电势 并且在每个磁场条件下，确定产生每个目标磁场的容许误差范围内的磁场的电流分布，使得由电流电位表示的表面电流将变得接近目标磁场分布集 对于每个有限表面元素; 以及从所确定的电流分布的轮廓线确定线圈图案。

公开(公告)号：US20110018540A1

公开(公告)日：2011-01-27

申请号：US12933255

申请日：2009-03-27

申请人： Mitsushi Abe ,  Hirotaka Takeshima

发明人： Mitsushi Abe ,  Hirotaka Takeshima

IPC分类号： G01R33/44

CPC分类号： G01R33/385

摘要： The present invention eliminate the limitation of coil pattern design, facilitates the fabrication, and improves the accuracy of magnetic field. A coil pattern calculation method is characterized by comprising the steps of: calculating a current potential at each contact between finite surface elements forming each of the coil surfaces based on an initial value of an input current potential distribution, and, for each of the coil surfaces, repeatedly calculating the current potential alternately and, under each magnetic field condition, determining a current potential distribution that generates a magnetic field falling within the range of allowable error for each target magnetic field so that a surface current represented by the current potential will become close to a target magnetic field distribution set for each of the finite surface elements; and determining a coil pattern from the contour lines of the determined current potential distribution.

摘要翻译： 本发明消除了线圈图案设计的限制，便于制造，并且提高了磁场的精度。 线圈图案计算方法的特征在于包括以下步骤：基于输入电流分布的初始值来计算形成每个线圈表面的有限表面元件之间的每个接触处的电流电势，并且对于每个线圈表面 ，交替地重复计算电流，并且在每个磁场条件下，确定产生每个目标磁场的容许误差范围内的磁场的电流分布，使得由当前电位表示的表面电流变得接近 到每个有限表面元件的目标磁场分布集合; 以及从所确定的电流分布的轮廓线确定线圈图案。

公开(公告)号：US20110037469A1

公开(公告)日：2011-02-17

申请号：US12516077

申请日：2007-09-19

申请人： Mitsushi Abe ,  Hiroyuki Watanabe ,  Hirotaka Takeshima

发明人： Mitsushi Abe ,  Hiroyuki Watanabe ,  Hirotaka Takeshima

IPC分类号： G01R33/34

CPC分类号： G01R33/3806 ,  G01R33/3815 ,  H01F7/202

摘要： An electromagnet device which generates magnetic field in the direction perpendicular to the inserting direction of an inspection subject is reduced in size and weight by removing unnecessary arrangement as much as possible. A magnetic resonance imaging device is also provided. The electromagnet device comprises a first coil (31) through which a first circular current (J1) circulates forward, a second coil (32) through which a second circular current (J2) circulates reversely, and a coil group (30) through which a plurality of circular currents (J3-J6) circulate alternately forward and reversely. The first coil (30), the second coil (32) and the coil group (30) are arranged in this order to increase the angle of elevation θ (θ1

摘要翻译： 通过尽可能地去除不必要的布置，在与检查对象的插入方向垂直的方向上产生磁场的电磁装置的尺寸和重量减小。 还提供了一种磁共振成像装置。 电磁体装置包括第一线圈（31），第一圆形电流（J1）向前循环;第二线圈（32），第二圆形电流（J2）通过该线圈反向循环;线圈组（30） 多个圆形电流（J3-J6）交替地向前和向后循环。 第一线圈（30），第二线圈（32）和线圈组（30）以此顺序排列以增加仰角; （＆Thetas; 1 <＆thetas; 2 <＆thetas; 3）和不包括第二线圈（32）和线圈组（30）的空白区域（S）存在于仰角和角度之间的角度区域中; 2和 ＆thetas; 3。

公开(公告)号：US07928820B2

公开(公告)日：2011-04-19

申请号：US12358612

申请日：2009-01-23

申请人： Tomoo Chiba ,  Hiroyuki Watanabe ,  Hirotaka Takeshima ,  Shigeki Tounosu ,  Mitsushi Abe ,  Hiroyuki Takeuchi

发明人： Tomoo Chiba ,  Hiroyuki Watanabe ,  Hirotaka Takeshima ,  Shigeki Tounosu ,  Mitsushi Abe ,  Hiroyuki Takeuchi

IPC分类号： H01F6/00 ,  G01V3/00

CPC分类号： H01F6/04 ,  G01R33/3804 ,  G01R33/3806 ,  G01R33/3815

摘要： In a superconducting magnet, including a vacuum vessel, a coil vessel inside the vacuum vessel, and a superconducting coil inside the coil vessel for generating a magnetic field, has a magnetic member, disposed inside the vacuum vessel, supported with thermal insulation, for compensating the magnetic field; a heat exchange device disposed outside the vacuum vessel for supplying to or absorbing heat from the vacuum vessel; and thermal conducting members thermally connecting the heat exchange device via the vacuum vessel to the magnetic member. An MRI including the superconducting magnet is also disclosed.

摘要翻译： 在包括真空容器的真空容器的超导磁体中，真空容器内部的线圈容器和用于产生磁场的线圈容器内的超导线圈具有设置在真空容器内的热绝缘支撑的磁性构件，用于补偿 磁场; 设置在所述真空容器外部的用于从所述真空容器供给或吸收热量的热交换装置; 以及导热构件，其通过所述真空容器将所述热交换装置热连接到所述磁性构件。 还公开了包括超导磁体的MRI。

公开(公告)号：US20090189721A1

公开(公告)日：2009-07-30

申请号：US12358612

申请日：2009-01-23

申请人： Tomoo CHIBA ,  Hiroyuki Watanabe ,  Hirotaka Takeshima ,  Shigeki Tounosu ,  Mitsushi Abe ,  Hiroyuki Takeuchi

发明人： Tomoo CHIBA ,  Hiroyuki Watanabe ,  Hirotaka Takeshima ,  Shigeki Tounosu ,  Mitsushi Abe ,  Hiroyuki Takeuchi

IPC分类号： H01F6/00

CPC分类号： H01F6/04 ,  G01R33/3804 ,  G01R33/3806 ,  G01R33/3815

摘要： In a superconducting magnet, including a vacuum vessel, a coil vessel inside the vacuum vessel, and a superconducting coil inside the coil vessel for generating a magnetic field, has a magnetic member, disposed inside the vacuum vessel, supported with thermal insulation, for compensating the magnetic field; a heat exchange device disposed outside the vacuum vessel for supplying to or absorbing heat from the vacuum vessel; and thermal conducting members thermally connecting the heat exchange device via the vacuum vessel to the magnetic member. An MRI including the superconducting magnet is also disclosed.

摘要翻译： 在包括真空容器的真空容器的超导磁体中，真空容器内部的线圈容器和用于产生磁场的线圈容器内的超导线圈具有设置在真空容器内的热绝缘支撑的磁性构件，用于补偿 磁场; 设置在所述真空容器外部的用于从所述真空容器供给或吸收热量的热交换装置; 以及导热构件，其通过所述真空容器将所述热交换装置热连接到所述磁性构件。 还公开了包括超导磁体的MRI。

公开(公告)号：US09389291B2

公开(公告)日：2016-07-12

申请号：US13511820

申请日：2010-11-26

申请人： Mitsushi Abe

发明人： Mitsushi Abe

IPC分类号： G01R33/385 ,  G01R33/20 ,  G01R33/421 ,  G01R33/565

CPC分类号： G01R33/385 ,  G01R33/20 ,  G01R33/4215 ,  G01R33/56518

摘要： A method for designing a coil pattern, whereby the production of an error magnetic field and further an eddy current can be suppressed to improve the quality of a cross-sectional image irrespective of cylindrical cross-sectional shape of the main coil and the shield coil. The difference between the initial values of the target magnetic field and the magnetic field vector is set as a difference target magnetic field. An approximate value of the current potential vector that produces the difference target magnetic field is represented by a polynomial of an eigenvector group of the current potential. The coefficient of each of the terms of the polynomial is determined on the basis of the singular value and the eigenvector group of the magnetic field distribution.

摘要翻译： 一种用于设计线圈图案的方法，由此可以抑制误差磁场和另外的涡流的产生，以提高横截面图像的质量，而与主线圈和屏蔽线圈的圆柱形截面形状无关。 将目标磁场的初始值和磁场矢量之间的差设定为差分目标磁场。 产生差分目标磁场的电流电位矢量的近似值由当前电位的特征向量组的多项式表示。 基于磁场分布的奇异值和特征向量组来确定多项式的每个项的系数。

公开(公告)号：US20140176138A1

公开(公告)日：2014-06-26

申请号：US14239872

申请日：2012-08-10

申请人： Yukinobu Imamura ,  Mitsushi Abe ,  Takeshi Yatsuo ,  Masanao Terada ,  Ryuya Ando ,  Takeshi Kawamura

发明人： Yukinobu Imamura ,  Mitsushi Abe ,  Takeshi Yatsuo ,  Masanao Terada ,  Ryuya Ando ,  Takeshi Kawamura

IPC分类号： G01R33/34

CPC分类号： G01R33/34092 ,  G01R33/34007 ,  G01R33/4215 ,  G01R33/56518 ,  Y10T29/49117

摘要： In a gradient magnetic field coil device including: a plurality of main coils generating in an imaging region of a magnetic field resonance imaging device a magnetic field distribution in which an intensity linearly inclines; and a plurality of shield coils, arranged on an opposite side of the imaging region across the main coils, suppressing residual magnetic field generated by the main coils on the opposite side. The plurality of main coils and the plurality of shield coils are connected in series. The device further includes a plurality of current adjusting devices, connected to the shield coils in parallel, independently adjusting currents flowing through the shield coils, respectively, to enhance symmetry of the residual magnetic field. The gradient magnetic field coil device is provided which can suppress generation of eddy current magnetic field even if there is a relative position deviation between the main coils and shield coils.

摘要翻译： 一种梯度磁场线圈装置，包括：多个主线圈，其在磁场共振成像装置的摄像区域中产生强度呈线性倾斜的磁场分布; 以及多个屏蔽线圈，其布置在主线圈上的成像区域的相对侧上，从而抑制由相反侧的主线圈产生的残余磁场。 多个主线圈和多个屏蔽线圈串联连接。 该装置还包括多个并联的屏蔽线圈的电流调节装置，分别独立地调节流过屏蔽线圈的电流，以增强残余磁场的对称性。 提供了梯度磁场线圈装置，即使在主线圈和屏蔽线圈之间存在相对位置偏差，也可以抑制涡电流磁场的产生。

公开(公告)号：US20120176137A1

公开(公告)日：2012-07-12

申请号：US13391066

申请日：2010-08-26

申请人： Masanao Terada ,  Mitsushi Abe ,  Yukinobu Imamura ,  Hiroyuki Takeuchi ,  Takeshi Yatsuo ,  Akira Kurome

发明人： Masanao Terada ,  Mitsushi Abe ,  Yukinobu Imamura ,  Hiroyuki Takeuchi ,  Takeshi Yatsuo ,  Akira Kurome

IPC分类号： G01R33/381

CPC分类号： G01R33/385 ,  G01R33/4215

摘要： In the magnetic resonance imaging device, the distance between the first and second coils is different in the circumferential direction and has a first region (A1) (θ=0, π) and a second region (A2) (θ=π/2) narrower than the first region (A1). In the first coil, wiring patterns (17a, 17b) on the side of a zero-plane (F0) passing through the center of the first coil and perpendicular to the axis direction (z-axis direction) meander in the circumferential direction such that the wiring patterns (17a, 17b) depart from the zero-plane (F0) in the first region (A1) and approach the zero-plane (F0) in the second region (A2). This provides a gradient magnetic field coil capable of configuring wiring patterns without using a loop coil that does not pass through the z-axis.

摘要翻译： 在磁共振成像装置中，第一和第二线圈之间的距离在圆周方向上不同，并且具有第一区域（A1）（＆eta; = 0，＆amp; pgr）和第二区域（A2）（＆Thetas; =＆pgr ; / 2）比第一区域（A1）窄。 在第一线圈中，通过第一线圈的中心并且垂直于轴线方向（z轴方向）的零平面（F0）侧的布线图案（17a，17b）在圆周方向上弯曲，使得 布线图案（17a，17b）从第一区域（A1）中的零平面（F0）偏离并接近第二区域（A2）中的零平面（F0）。 这提供了能够配置布线图案而不使用不通过z轴的环形线圈的梯度磁场线圈。

公开(公告)号：US08134433B2

公开(公告)日：2012-03-13

申请号：US10950392

申请日：2004-09-28

申请人： Mitsushi Abe ,  Takeshi Nakayama ,  Masanori Takahashi

发明人： Mitsushi Abe ,  Takeshi Nakayama ,  Masanori Takahashi

IPC分类号： H01F6/00

CPC分类号： G01R33/3806 ,  G01R33/3815

摘要： Main coils, counteracting coils and correction coils, each forming superconducting coil, are enclosed in two cooling medium chamber facing to each other and an imaging region is formed between the two cooling medium chamber positioned in each vacuum chamber, the main coils being divided into two pieces to reduce the current density and the maximum experience magnetic filed and compression stress.

摘要翻译： 每个形成超导线圈的主线圈，反作用线圈和校正线圈被封闭在彼此相对的两个冷却介质腔中，并且在位于每个真空室中的两个冷却介质室之间形成成像区域，主线圈被分成两个 减少电流密度和最大体积磁场和压缩应力。