公开(公告)号：US20100321019A1

公开(公告)日：2010-12-23

申请号：US12866327

申请日：2009-01-29

申请人： Yukinobu Imamura ,  Mitsushi Abe ,  Masanao Terada ,  Akira Kurome

发明人： Yukinobu Imamura ,  Mitsushi Abe ,  Masanao Terada ,  Akira Kurome

IPC分类号： G01R33/44

CPC分类号： G01R33/385 ,  G01R33/3806

摘要： When the gradient magnetic field 9 is generated, a low magnetic field region 22 and a high magnetic field region 21 are generated where a magnetic field crossing at least one of the first forward coil 11a, a second forward coil 11b, first revere coil 11e, and a second reverse coil 11d has different intensities between the low and high magnetic field regions and the intensity in the high magnetic region is higher than the intensity in the low magnetic field region. A line width Dlh of the coil line in the high magnetic field region 21 is narrower than the line width Dll of the coil line 24 in the low magnetic field region 22. There is provided a gradient magnetic field coil can suppress in a usable range heat generations due to eddy current and due to a pulse large current which steeply varies.

摘要翻译： 当产生梯度磁场9时，产生低磁场区域22和高磁场区域21，其中与第一正向线圈11a，第二正向线圈11b，第一重心线圈11e， 并且第二反向线圈11d在低磁场区域和高磁场区域之间具有不同的强度，并且高磁区域中的强度高于低磁场区域中的强度。 高磁场区域21中的线圈线的线宽度Dlh比低磁场区域22的线圈线24的线宽度Dll窄。设置有梯度磁场线圈可以在可用范围内抑制热量 由于涡电流和由于脉冲大电流而急剧变化。

公开(公告)号：US07126448B2

公开(公告)日：2006-10-24

申请号：US11101464

申请日：2005-04-08

申请人： Hiroyuki Watanabe ,  Masanori Takahashi ,  Mitsushi Abe ,  Jun Kawamura

发明人： Hiroyuki Watanabe ,  Masanori Takahashi ,  Mitsushi Abe ,  Jun Kawamura

IPC分类号： H01F6/00

CPC分类号： G01R33/3815

摘要： An MRI apparatus includes magnet members for compensating the magnetic field which are disposed to a thermal shield system of the superconducting apparatus. The magnet members for compensating the magnetic field are disposed at positions where temperature change in the vacuum chamber is not transferred to the interior of the vacuum chamber.

摘要翻译： MRI装置包括用于补偿磁场的磁体构件，其设置在超导装置的热屏蔽系统上。 用于补偿磁场的磁体构件设置在真空室中的温度变化不被传递到真空室内部的位置处。

公开(公告)号：US20050146407A1

公开(公告)日：2005-07-07

申请号：US10980312

申请日：2004-11-04

申请人： Hiroyuki Watanabe ,  Masanori Takahashi ,  Mitsushi Abe ,  Jun Kawamura

发明人： Hiroyuki Watanabe ,  Masanori Takahashi ,  Mitsushi Abe ,  Jun Kawamura

IPC分类号： A61B5/055 ,  G01R33/38 ,  G01R33/3815 ,  G01R33/3873 ,  H01F6/00 ,  H01F6/04 ,  H01F1/00

CPC分类号： G01R33/3815

摘要： An MRI apparatus is characterized in that magnet members for compensating the magnetic field are disposed to a thermal shield system of the superconducting apparatus. It is another feature of the present invention that the magnet members for compensating the magnetic field are disposed at positions where temperature change in the vacuum chamber is not transferred to the interior of the vacuum chamber.

公开(公告)号：US20130335088A1

公开(公告)日：2013-12-19

申请号：US13979542

申请日：2012-01-13

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

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

IPC分类号： G01R33/385

CPC分类号： G01R33/385 ,  G01R33/4215

摘要： A gradient coil device includes a major axis gradient coil, having an ellipse in a cross section generating a gradient magnetic field inclined in a major axis direction of the ellipse at a magnetic field space; and a minor axis gradient coil, having an ellipse in a cross section generating a gradient magnetic field inclined in a minor axis direction of the ellipse at the magnetic field space. A length of the minor axis field coil in the center axis direction is shorter than a length of the major axis gradient coil in the center axis direction. A maximum value of a residual magnetic field generated by the minor axis gradient coil at a space outside the magnetic field space is equal to or smaller than a maximum value of a residual magnetic field generated by the major axis gradient coil at a space outside the magnetic field space.

摘要翻译： 梯度线圈装置包括长轴梯度线圈，在截面上具有椭圆形状，在磁场空间产生沿椭圆的长轴方向倾斜的梯度磁场; 以及短轴倾斜线圈，在截面中具有椭圆形状，在磁场空间产生在椭圆的短轴方向上倾斜的倾斜磁场。 短轴励磁线圈的中心轴方向的长度比中心轴方向的长轴梯度线圈的长度短。 在磁场空间外的空间处由短轴梯度线圈产生的剩余磁场的最大值等于或小于在磁性空间外的空间处由长轴梯度线圈产生的残余磁场的最大值 场地空间。

公开(公告)号：US20120235685A1

公开(公告)日：2012-09-20

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 ,  G06F17/50

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：US07928730B2

公开(公告)日：2011-04-19

申请号：US11624543

申请日：2007-01-18

申请人： Manabu Aoki ,  Mitsushi Abe ,  Takeshi Nakayama ,  Masanori Takahashi

发明人： Manabu Aoki ,  Mitsushi Abe ,  Takeshi Nakayama ,  Masanori Takahashi

IPC分类号： G01V3/00 ,  G01R33/38 ,  H01F1/00

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

摘要： The electromagnet apparatuses generate a homogeneous magnetic field in a homogeneous magnetic field region by a pair of superconductive main coils for facing to each other; a pair of superconductive shielding coils for facing to each other and passing a current in a direction reverse to that of the main coils; and a pair of first ferromagnetic members for facing to each other, and the apparatuses further include a pair of second ferromagnetic members for facing to each other and be disposed in contact with or adjacent to an opposite side of the region side of the first ferromagnetic members, wherein the region is interposed between the main coils, between the shielding coils, between the first members whose outer periphery is a circle, and between the second members whose outer periphery is a circle whose diameter is larger than that of the circle of the first members.

摘要翻译： 电磁装置通过一对相互面对的超导主线圈在均匀的磁场区域中产生均匀的磁场; 一对超导屏蔽线圈，用于彼此面对并使电流沿与主线圈相反的方向通过; 以及一对彼此面对的第一铁磁构件，并且该装置还包括一对第二铁磁构件，用于彼此面对并设置成与第一铁磁构件的区域侧的相反侧接触或相邻 其中，所述区域介于所述主线圈之间，所述屏蔽线圈之间，所述外周为圆的所述第一构件之间，所述第二构件的外周为直径大于所述第一 会员

公开(公告)号：US07714574B2

公开(公告)日：2010-05-11

申请号：US11942037

申请日：2007-11-19

申请人： Ryuya Ando ,  Mitsushi Abe ,  Tsutomu Yamamoto ,  Tomoo Chiba

发明人： Ryuya Ando ,  Mitsushi Abe ,  Tsutomu Yamamoto ,  Tomoo Chiba

IPC分类号： G01V3/00

CPC分类号： G01R33/3815 ,  G01R33/3804 ,  G01R33/3806 ,  G01R33/421

摘要： A superconducting magnet includes: a superconducting coil for generating a static magnetic field; a refrigerant container for containing the superconducting coil and a refrigerant; a vacuum container for holding the refrigerant container in a vacuum state; a radiation shield between the refrigerant container and the vacuum container; a refrigerator for re-liquidfying the refrigerant; and a dynamic magnetic field shield. The refrigerator includes: first and second regenerative refrigerants. The dynamic magnetic field shield is an electric good conductor and arranged around the first regenerative refrigerant along a motion axis of the first regenerative refrigerant, wherein a direction of the motion axis is aligned with a direction of a magnetic force line of the static magnetic field at the first regenerative refrigerant.

摘要翻译： 超导磁体包括：用于产生静磁场的超导线圈; 用于容纳超导线圈和制冷剂的制冷剂容器; 用于将制冷剂容器保持在真空状态的真空容器; 在制冷剂容器和真空容器之间的辐射屏蔽; 用于重新液化制冷剂的冰箱; 和动态磁场屏蔽。 冰箱包括：第一和第二再生制冷剂。 所述动态磁场屏蔽是电导体，沿着所述第一再生制冷剂的运动轴围绕所述第一再生制冷剂配置，其中所述运动轴的方向与所述静磁场的磁力线的方向对齐， 第一个再生制冷剂。

公开(公告)号：US20080024254A1

公开(公告)日：2008-01-31

申请号：US11780068

申请日：2007-07-19

申请人： Tomoo Chiba ,  Hiroyuki Watanabe ,  Kunihiro Takayama ,  Jun Kawamura ,  Mitsushi Abe ,  Takeshi Nakayama ,  Yoshio Hamadate

发明人： Tomoo Chiba ,  Hiroyuki Watanabe ,  Kunihiro Takayama ,  Jun Kawamura ,  Mitsushi Abe ,  Takeshi Nakayama ,  Yoshio Hamadate

IPC分类号： H01F6/00

CPC分类号： G01R33/3815 ,  G01R33/3804 ,  G01R33/3806 ,  G01R33/3873

摘要： A superconducting magnet apparatus obtains high magnetic field uniformity without increasing the volume of a magnetic material even against disturbances. The superconducting magnet apparatus has a circular superconducting coil which generates a magnetic field; a coil vessel which contains the superconducting coil 11 together with refrigerant; a thermal shield arranged so as to surround the coil vessel; a vacuum vessel with inside kept vacuum which surrounds the thermal-shield; and magnetic materials and for correcting the magnetic field, the magnetic materials being arranged in the vacuum vessel; wherein the magnetic materials and are supported by a heat-insulation support medium fixed to the coil vessel.

摘要翻译： 超导磁体设备即使抵抗干扰也能获得高磁场均匀性而不增加磁性材料的体积。 超导磁体装置具有产生磁场的圆形超导线圈， 包含超导线圈11和制冷剂的线圈容器; 布置成围绕线圈容器的热屏蔽; 具有围绕热屏蔽的内部保持真空的真空容器; 和磁性材料并用于校正磁场，磁性材料布置在真空容器中; 其中所述磁性材料由固定到所述线圈容器的绝热支撑介质支撑。

公开(公告)号：US09075119B2

公开(公告)日：2015-07-07

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： G01R33/385 ,  G01R33/421

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：US08587313B2

公开(公告)日：2013-11-19

申请号：US12866327

申请日：2009-01-29

申请人： Yukinobu Imamura ,  Mitsushi Abe ,  Masanao Terada ,  Akira Kurome

发明人： Yukinobu Imamura ,  Mitsushi Abe ,  Masanao Terada ,  Akira Kurome

IPC分类号： G01V3/00

CPC分类号： G01R33/385 ,  G01R33/3806

摘要： When the gradient magnetic field 9 is generated, a low magnetic field region 22 and a high magnetic field region 21 are generated where a magnetic field crossing at least one of the first forward coil 11a, a second forward coil 11b, first revere coil 11e, and a second reverse coil 11d has different intensities between the low and high magnetic field regions and the intensity in the high magnetic region is higher than the intensity in the low magnetic field region. A line width Dlh of the coil line in the high magnetic field region 21 is narrower than the line width Dll of the coil line 24 in the low magnetic field region 22. There is provided a gradient magnetic field coil can suppress in a usable range heat generations due to eddy current and due to a pulse large current which steeply varies.

摘要翻译： 当产生梯度磁场9时，产生低磁场区域22和高磁场区域21，其中与第一正向线圈11a，第二正向线圈11b，第一重心线圈11e， 并且第二反向线圈11d在低磁场区域和高磁场区域之间具有不同的强度，并且高磁区域中的强度高于低磁场区域中的强度。 高磁场区域21中的线圈线的线宽度Dlh比低磁场区域22的线圈线24的线宽度Dll窄。设置有梯度磁场线圈可以在可用范围内抑制热量 由于涡电流和由于脉冲大电流而急剧变化。