公开(公告)号：US06909348B2

公开(公告)日：2005-06-21

申请号：US10433428

申请日：2001-12-04

申请人： Shigeru Kakugawa ,  Katsunori Azuma ,  Tsuyoshi Wakuda ,  Yoshihide Wadayama ,  Hirotaka Takeshima ,  Kenji Sakakibara ,  Takeshi Yatsuo ,  Takao Honmei

发明人： Shigeru Kakugawa ,  Katsunori Azuma ,  Tsuyoshi Wakuda ,  Yoshihide Wadayama ,  Hirotaka Takeshima ,  Kenji Sakakibara ,  Takeshi Yatsuo ,  Takao Honmei

IPC分类号： G01R33/38 ,  G01R33/3815 ,  G01R33/421 ,  H01F7/00

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 towards a first direction are disposed facing each other across a finite region and at least one set of the magneto-static field generating sources are disclosed on at least two almost concentric circles. A first plane includes a first axis, a second axis and a first point. The first point is a point of insertion between the first axis parallel to the first direction and passing almost through the center of the shield current carrying means. The second axis crosses at right angles to the first axis and is spaced almost equal distance from the two sets of the generating sources. The alternately arranged positive and negative current carrying directions of the shield current carrying means are set in the order of increasing value of θn.

摘要翻译： 一种具有屏蔽电流承载装置的磁体装置，其中用于产生朝向第一方向的磁场的两组磁静电场产生源跨越有限区域并且至少一组磁静态场 在至少两个几乎同心圆上公开发生源。 第一平面包括第一轴，第二轴和第一点。 第一点是在第一轴平行于第一方向并且几乎穿过屏蔽载流装置的中心之间的插入点。 第二轴线与第一轴线成直角交叉，与两组发电源的距离几乎相等。 屏蔽电流承载装置的交替布置的正和负电流承载方向被设置为以该数量增加的顺序。

公开(公告)号：US06937017B2

公开(公告)日：2005-08-30

申请号：US10468793

申请日：2002-02-27

申请人： Shigeru Kakugawa ,  Yoshihide Wadayama ,  Hirotaka Takeshima ,  Takeshi Yatsuo ,  Kenji Sakakibara

发明人： Shigeru Kakugawa ,  Yoshihide Wadayama ,  Hirotaka Takeshima ,  Takeshi Yatsuo ,  Kenji Sakakibara

IPC分类号： A61B5/055 ,  G01R33/383 ,  G01R33/387 ,  H01F6/00 ,  G01V3/00

CPC分类号： G01R33/383 ,  G01R33/387

摘要： The present invention is intended to provide a magnetic pole, a magnet apparatus, and a magnetic resonance imaging apparatus that the magnetic structure of the magnet apparatus for generating a uniform magnetic field is formed in a lower burst mode, and the profitability is increased, and at the same time, the uniformity of the magnetic field is improved.According to the present invention, the magnetic poles arranged opposite to each other across a measuring space have at least one of a plurality of hollows and a single hollow having a shape continuously changing on the section perpendicular to the direction of the magnetic field formed in the measuring space and particularly in order to make the magnetic field uniform, the arrangement of the plurality of hollows and the shape of the single hollow are adjusted. The magnet apparatus and magnetic resonance imaging apparatus of the present invention are structured as mentioned above.

摘要翻译： 本发明旨在提供一种用于产生均匀磁场的磁铁装置的磁性结构以较低的突发模式形成的磁极，磁体装置和磁共振成像装置，并且获利能力增加， 同时提高了磁场的均匀性。 根据本发明，跨越测量空间彼此相对设置的磁极具有多个中空部和单个中空中的至少一个，其形状在垂直于形成在该磁场的磁场的方向的截面上连续变化 测量空间，特别是为了使磁场均匀，调整多个中空部的布置和单个中空的形状。 本发明的磁铁装置和磁共振成像装置如上所述构成。

公开(公告)号：US06600318B1

公开(公告)日：2003-07-29

申请号：US09529874

申请日：2000-04-20

申请人： Shigeru Kakugawa ,  Shouji Kitamura ,  Nobuhiro Hara ,  Akiyoshi Komura ,  Noriaki Hino ,  Hajime Kawano ,  Takao Honmei ,  Hirotaka Takeshima ,  Takeshi Yatsuo ,  Hiroshi Tazaki

发明人： Shigeru Kakugawa ,  Shouji Kitamura ,  Nobuhiro Hara ,  Akiyoshi Komura ,  Noriaki Hino ,  Hajime Kawano ,  Takao Honmei ,  Hirotaka Takeshima ,  Takeshi Yatsuo ,  Hiroshi Tazaki

IPC分类号： G01V300

CPC分类号： G01R33/3806

摘要： A magnet device is provided with two static magnetic field generating sources 14a and 14b disposed so as to oppose each other while placing a person to be inspected therebetween, a vessel 15 containing the static magnetic field generating source 14a and a vessel 16 containing the static magnetic field generating source 14b, and the vessels 15 and 16 are disposed at positions asymmetric with respect to the person to be inspected. Thereby, a magnet device and an MRI device using the same which can extend a space above the person to be inspected on a bed while avoiding introduction of a large scale device which causes to increase the manufacturing cost thereof.

摘要翻译： 磁体装置设置有两个静态磁场产生源14a和14b，它们彼此相对设置，同时放置要检查的人，包含静磁场发生源14a的容器15和容纳静磁场的容器16 场发生源14b，容器15和16设置在相对于被检查者不对称的位置。因此，使用该磁体装置和MRI装置的磁体装置和MRI装置可以在 同时避免引入导致增加其制造成本的大规模装置。

公开(公告)号：US06853281B1

公开(公告)日：2005-02-08

申请号：US09554155

申请日：1998-12-01

申请人： Shigeru Kakugawa ,  Shouji Kitamura ,  Nobuhiro Hara ,  Akiyoshi Komura ,  Noriaki Hino ,  Hajime Kawano ,  Takao Honmei ,  Hirotaka Takeshima ,  Takeshi Yatsuo ,  Hiroshi Tazaki

发明人： Shigeru Kakugawa ,  Shouji Kitamura ,  Nobuhiro Hara ,  Akiyoshi Komura ,  Noriaki Hino ,  Hajime Kawano ,  Takao Honmei ,  Hirotaka Takeshima ,  Takeshi Yatsuo ,  Hiroshi Tazaki

IPC分类号： G01R33/38 ,  G01R33/381 ,  G01R33/3815 ,  G01V3/00

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

摘要： A magnet device includes two sets of static magnetic field generation sources spaced from each other in the vertical direction such that the uniform magnetic field region (patient space) is between then. Each set has concentric current carrying coils to generate a uniform magnetic field in a first direction (the vertical direction). Several such coils are used in each set, disposed such that when a first axis which is parallel to the first (vertical) direction and passes substantially through the centers of the current carrying coils crosses, at a first point, a second axis which is orthogonal to the first axis and is at substantially equal distance from the respective static magnetic field generation sources, the current carrying coils are disposed in such a manner that when geometrical centers of cross sections of the current carrying coils are projected on a first straight line that is in a first plane containing the first axis, the second axis and the first point and passing through the first point, the directions of the currents of the carrying coils at the respective corresponding projections align alternatively in positive and negative directions on the first straight line.

摘要翻译： 磁体装置包括在垂直方向彼此间隔开的两组静态磁场产生源，使得均匀的磁场区域（患者空间）在之间。 每组具有同心的载流线圈，以在第一方向（垂直方向）上产生均匀的磁场。 在每组中使用若干这样的线圈，这样设置成使得当第一轴线平行于第一（垂直）方向并且基本上穿过载流线圈的中心穿过时，在第一点处与正交的第二轴线交叉 到第一轴线并且距离相应的静态磁场产生源基本上相等的距离，载流线圈以这样的方式设置，使得当载流线圈的横截面的几何中心投影在第一直线上时 在包含第一轴线，第二轴线和第一点并穿过第一点的第一平面中，各个相应突起处的输送线圈的电流方向在第一直线上在正向和负向上交替排列。

公开(公告)号：US07307421B2

公开(公告)日：2007-12-11

申请号：US10554164

申请日：2004-04-22

申请人： Akira Kurome ,  Kenji Sakakibara ,  Hirotaka Takeshima ,  Takeshi Yatsuo ,  Hiroyuki Watanabe ,  Yoshihide Wadayama ,  Hirofumi Motoshiromizu ,  Kunihito Suzuki

发明人： Akira Kurome ,  Kenji Sakakibara ,  Hirotaka Takeshima ,  Takeshi Yatsuo ,  Hiroyuki Watanabe ,  Yoshihide Wadayama ,  Hirofumi Motoshiromizu ,  Kunihito Suzuki

IPC分类号： G01V3/00

CPC分类号： G01R33/3854 ,  G01R33/3856

摘要： An MRI apparatus having a configuration that reduces vibration of a static magnetic field generating source is provided. A closed vessel 2 of the static magnetic field generating source is provided with a rigid structure 4 for preventing transmission of vibration generated from a gradient magnetic field generating part 21 to other members via the closed vessel 2. The rigid structure 4 uses, for example, a connecting part 4 that connects a face 25 on the imaging space side and a face 26 confronting it. The rigidity of the closed vessel is thereby increased, and therefore vibration transmitted from the gradient magnetic field generating part can be reduced. The connecting part can have a through-hole structure, and in such a case, internal space of through-hole can be used for drawing cables.

摘要翻译： 提供了具有减小静磁场产生源的振动的结构的MRI装置。 静态磁场产生源的密闭容器2具有刚性结构4，用于防止从梯形磁场产生部分21产生的振动经由密封容器2传递到其它部件。 刚性结构4使用例如连接成像空间侧的面25和面对面26的连接部4。 因此，密闭容器的刚性增加，因此可以减少从梯度磁场产生部件传递的振动。 连接部件可以具有通孔结构，在这种情况下，可以使用通孔的内部空间来拉制电缆。

公开(公告)号：US20060220646A1

公开(公告)日：2006-10-05

申请号：US10554164

申请日：2004-04-22

申请人： Akira Kurome ,  Kenji Sakakibara ,  Hirotaka Takeshima ,  Takeshi Yatsuo ,  Hiroyuki Watanabe ,  Yoshihide Wadayama ,  Hirofumi Motoshiromizu ,  Kunihito Suzuki

发明人： Akira Kurome ,  Kenji Sakakibara ,  Hirotaka Takeshima ,  Takeshi Yatsuo ,  Hiroyuki Watanabe ,  Yoshihide Wadayama ,  Hirofumi Motoshiromizu ,  Kunihito Suzuki

IPC分类号： G01V3/00

CPC分类号： G01R33/3854 ,  G01R33/3856

摘要： An MRI apparatus having a configuration that reduces vibration of a static magnetic field generating source is provided. A closed vessel 2 of the static magnetic field generating source is provided with a rigid structure 4 for preventing transmission of vibration generated from a gradient magnetic field generating part 21 to other members via the closed vessel 2. The rigid structure 4 uses, for example, a connecting part 4 that connects a face 25 on the imaging space side and a face 26 confronting it. The rigidity of the closed vessel is thereby increased, and therefore vibration transmitted from the gradient magnetic field generating part can be reduced. The connecting part can have a through-hole structure, and in such a case, internal space of through-hole can be used for drawing cables.

摘要翻译： 提供了具有减小静磁场产生源的振动的结构的MRI装置。 静态磁场产生源的密闭容器2具有刚性结构4，用于防止从梯形磁场产生部分21产生的振动经由密封容器2传递到其它部件。 刚性结构4使用例如连接成像空间侧的面25和面对面26的连接部4。 因此，密闭容器的刚性增加，因此可以减少从梯度磁场产生部件传递的振动。 连接部件可以具有通孔结构，在这种情况下，可以使用通孔的内部空间来拉制电缆。

公开(公告)号：US20060279285A1

公开(公告)日：2006-12-14

申请号：US11444309

申请日：2006-06-01

申请人： Hiroshi Morita ,  Ryozo Takeuchi ,  Akira Kurome ,  Takeshi Yatsuo ,  Hirotaka Takeshima

发明人： Hiroshi Morita ,  Ryozo Takeuchi ,  Akira Kurome ,  Takeshi Yatsuo ,  Hirotaka Takeshima

IPC分类号： G01V3/00

CPC分类号： G01R33/3856

摘要： The present invention provides a gradient coil apparatus for magnetic resonance imaging system capable of enhancing electrical insulation performance and cooling performance. A gradient coil apparatus for magnetic resonance imaging system comprising plurality of gradient coils 11a, 11b and 11c for applying a gradient magnetic field to a test object and an internal heat exchanger 14 to be immersed in insulation oil 13 in a container 12. A pump 16 is disposed to circulate coolant between the internal heat exchanger 14 and an external heat exchanger 15 disposed outside of the container 12. This arrangement allows the insulation oil only inside of the container, thereby ensuring a substantial reduction in the amount of insulation oil.

摘要翻译： 本发明提供一种能够提高电气绝缘性能和冷却性能的磁共振成像系统的梯度线圈装置。 一种用于磁共振成像系统的梯度线圈装置，包括用于向测试对象施加梯度磁场的多个梯度线圈11a，11b和11c，以及浸入容器12中的绝缘油13中的内部热交换器14。 泵16设置成在内部热交换器14和设置在容器12外部的外部热交换器15之间循环冷却剂。这种布置允许仅在容器内部的绝缘油，从而确保绝缘油的量显着减少 。

公开(公告)号：US07250766B2

公开(公告)日：2007-07-31

申请号：US11444309

申请日：2006-06-01

申请人： Hiroshi Morita ,  Ryozo Takeuchi ,  Akira Kurome ,  Takeshi Yatsuo ,  Hirotaka Takeshima

发明人： Hiroshi Morita ,  Ryozo Takeuchi ,  Akira Kurome ,  Takeshi Yatsuo ,  Hirotaka Takeshima

IPC分类号： G01V3/00

CPC分类号： G01R33/3856

摘要： A gradient coil apparatus for magnetic resonance imaging system includes a plurality of gradient coils 11a, 11b and 11c for applying a gradient magnetic field to a test object and an internal heat exchanger 14 to be immersed in insulation oil 13 in a container 12. A pump 16 is disposed to circulate coolant between the internal heat exchanger 14 and an external heat exchanger 15 is disposed outside of the container 12. This arrangement allows the insulation oil only inside of the container, thereby ensuring a substantial reduction in the amount of insulation oil.

摘要翻译： 用于磁共振成像系统的梯度线圈装置包括用于向测试对象施加梯度磁场的多个梯度线圈11a，11b和11c以及要浸入容器12中的绝缘油13中的内部热交换器14 。 泵16设置成在内部热交换器14之间循环冷却剂，外部热交换器15设置在容器12的外部。 这种布置允许绝缘油仅在容器内部，从而确保绝缘油的量显着减少。

公开(公告)号：US06781492B2

公开(公告)日：2004-08-24

申请号：US10191466

申请日：2002-07-10

申请人： Hirotaka Takeshima ,  Takao Hommei ,  Hajime Kawano ,  Hiroshi Tazaki ,  Takeshi Yatsuo ,  Shigenori Kuroda ,  Hajime Tanabe

发明人： Hirotaka Takeshima ,  Takao Hommei ,  Hajime Kawano ,  Hiroshi Tazaki ,  Takeshi Yatsuo ,  Shigenori Kuroda ,  Hajime Tanabe

IPC分类号： H01F600

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

摘要： A superconducting magnet apparatus. By forming one or more holes in each of platelike ferromagnetic substances forming a magnetic shield for focusing the magnetic flux generated by superconducting coils, the flow of lines of magnetic flux is adjusted. Thereby, a static magnetic field in a measurement space is corrected. By disposing coupling tubes for supporting two cooling vessels housing superconducting coils on the rear side with respect to a central axis (Z axis) of the measurement space of the vertical direction, access to the subject is facilitated. In addition, the magnetic shield has an opening portion wider than the superconducting magnet on its side face. After the magnetic shield has been assembled, the superconducting magnet can be inserted from the opening portion.

摘要翻译： 超导磁体装置。 通过在形成用于聚焦超导线圈产生的磁通的磁屏蔽的板状铁磁性物质的每一个中形成一个或多个孔，调节磁通线的流动。 由此，校正测量空间中的静磁场。 通过设置用于支撑相对于垂直方向的测量空间的中心轴线（Z轴）在后侧容纳超导线圈的两个冷却容器的联接管，便于对对象的访问。 此外，磁屏蔽件的侧面具有比超导磁体宽的开口部。 在组装磁屏蔽之后，可以从开口部分插入超导磁体。

公开(公告)号：US06437672B1

公开(公告)日：2002-08-20

申请号：US09101048

申请日：1998-06-29

申请人： Hirotaka Takeshima ,  Takao Hommei ,  Hajime Kawano ,  Hiroshi Tazaki ,  Takeshi Yatsuo ,  Shigenori Kuroda ,  Hajime Tanabe

发明人： Hirotaka Takeshima ,  Takao Hommei ,  Hajime Kawano ,  Hiroshi Tazaki ,  Takeshi Yatsuo ,  Shigenori Kuroda ,  Hajime Tanabe

IPC分类号： H01F600

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

摘要： A superconducting magnet apparatus. By forming one or more holes in each of platelike ferromagnetic substances forming a magnetic shield for focusing the magnetic flux generated by superconducting coils, the flow of lines of magnetic flux is adjusted. Thereby, a static magnetic field in a measurement space is corrected. By disposing coupling tubes for supporting two cooling vessels housing superconducting coils on the rear side with respect to a central axis (Z axis) of the measurement space of the vertical direction, access to the subject is facilitated. In addition, the magnetic shield has an opening portion wider than the superconducting magnet on its side face. After the magnetic shield has been assembled, the superconducting magnet can be inserted from the opening portion.

摘要翻译： 超导磁体装置。 通过在形成用于聚焦超导线圈产生的磁通的磁屏蔽的板状铁磁性物质的每一个中形成一个或多个孔，调节磁通线的流动。 由此，校正测量空间中的静磁场。 通过设置用于支撑相对于垂直方向的测量空间的中心轴线（Z轴）在后侧容纳超导线圈的两个冷却容器的联接管，便于对对象的访问。 此外，磁屏蔽件的侧面具有比超导磁体宽的开口部。 在组装磁屏蔽之后，可以从开口部分插入超导磁体。