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1. 发明授权

US5334966A Magnetostatic field generator for magnetic resonance imaging apparatus 失效
标题翻译：用于磁共振成像装置的磁静力场发生器
公开(公告)号：US5334966A
公开(公告)日：1994-08-02
申请号：US984333
申请日：1992-12-02
申请人： Hirotaka Takeshima , Hiroyuki Takeuchi
发明人： Hirotaka Takeshima , Hiroyuki Takeuchi
IPC分类号： A61B5/055 , G01R33/383 , H01F7/02
CPC分类号： G01R33/383
摘要： A magnetostatic field generator for a magnetic resonance imaging apparatus includes a pair of permanent magnets each having a rectangular parallelepiped shape arranged perpendicular to a direction of a uniform magnetic field to surround a space where a uniform magnetic field is generated, a plurality of first permanent magnets each having a trigonal prism shape arranged on both sides of an area between the permanent magnets each having a rectangular parallelepiped shape, a plurality of second permanent magnets each having a trigonal prism shape which are arranged between the permanent magnets each having a rectangular parallelepiped shape and the first permanent magnets and satisfy magnetic field boundary conditions between the permanent magnets each having a rectangular parallelepiped shape and the first permanent magnets, and a yoke for holding the pair of permanent magnets each having a rectangular parallelepiped shape, the plurality of first permanent magnets, and the plurality of second permanent magnets and for forming a magnetic path.
摘要翻译：一种用于磁共振成像装置的静磁场发生器，包括一对永久磁铁，每个永磁体具有垂直于均匀磁场的方向布置的长方体形状，以围绕产生均匀磁场的空间;多个第一永磁体每个具有三角棱镜形状，其布置在每个具有长方体形状的永磁体之间的区域的两侧上;多个第二永磁体，每个具有三角形形状，每个具有三角形形状，每个具有长方体形状的永磁体和所述第一永久磁铁满足各自具有长方体形状的永久磁铁和所述第一永久磁铁之间的磁场边界条件，以及用于保持所述一对永久磁铁的磁轭，所述磁轭各自具有长方体形状，所述多个第一永久磁铁，和多个第二永磁体和用于形成磁路。

2. 发明授权

US07755359B2 Magnetic resonance imaging apparatus with noise suppressing structure 失效
标题翻译：具有噪声抑制结构的磁共振成像装置
公开(公告)号：US07755359B2
公开(公告)日：2010-07-13
申请号：US11628097
申请日：2005-05-25
申请人： Takashi Yamamizu , Shichihei Sakuragi , Hirotaka Takeshima , Hiroyuki Takeuchi
发明人： Takashi Yamamizu , Shichihei Sakuragi , Hirotaka Takeshima , Hiroyuki Takeuchi
IPC分类号： G01V3/00
CPC分类号： G01R33/3873 , A61B5/055 , G01R33/3806 , G01R33/3815 , G01R33/3854
摘要： A magnetic resonance imaging apparatus capable of suppressing noise caused by vibration of a gradient magnetic field coil and improving image quality includes a large number of ferromagnetic shims disposed in a large number of holes formed in a shim tray, and vibration dampers disposed in holes formed in the shim tray to reduce noise generated by vibration of a gradient magnetic field generating coil.
摘要翻译：能够抑制由梯度磁场线圈的振动引起的噪声并提高图像质量的磁共振成像装置包括大量设置在形成于垫片托盘中的大量孔中的铁磁垫片，以及设置在形成于垫片托盘，以减少由梯度磁场产生线圈的振动产生的噪音。

3. 发明申请

US20080309343A1 Magnetic Resonance Imaging Apparatus 失效
标题翻译：磁共振成像仪
公开(公告)号：US20080309343A1
公开(公告)日：2008-12-18
申请号：US11628097
申请日：2005-05-25
申请人： Takashi Yamamizu , Shichihei Sakuragi , Hirotaka Takeshima , Hiroyuki Takeuchi
发明人： Takashi Yamamizu , Shichihei Sakuragi , Hirotaka Takeshima , Hiroyuki Takeuchi
IPC分类号： G01R33/3873
CPC分类号： G01R33/3873 , A61B5/055 , G01R33/3806 , G01R33/3815 , G01R33/3854
摘要： A magnetic resonance imaging apparatus capable of suppressing noise caused by vibration of a gradient magnetic field coil and improving image quality is realized.A shim tray 22 is disposed between a static magnetic field generating magnet 4 and a gradient magnetic field generating coil 13. A large number of ferromagnetic shims are disposed in a large number of holes (screw holes) 24 formed in the shim tray 22. Vibration dampers 23 are disposed in holes formed in the shim tray 22 to reduce noise generated by vibration of the gradient magnetic field generating coil 13, which is propagated to the static magnetic field generating magnet through solid bodies and shakes the static magnetic field generating magnet, etc. It is hence possible to secure areas for arrangement of two means, i.e., static magnetic-field non-uniformity correcting means and vibration suppressing means, to reduce the noise caused by the vibration of the gradient magnetic field generating coil 13, and to suppress deterioration of image quality.
摘要翻译：实现了能够抑制由梯度磁场线圈的振动引起的噪声并提高图像质量的磁共振成像装置。垫片托盘22设置在静磁场产生磁体4和梯度磁场产生线圈13之间。大量铁磁垫片设置在形成在垫片托盘22中的大量孔（螺孔）24中。振动减振器23设置在形成在垫片托盘22中的孔中，以减少由倾斜磁场产生线圈13的振动产生的噪声，该噪声通过固体传播到静态磁场产生磁体并摇动静磁场产生磁体等因此，可以确保用于布置两个装置的区域，即静态磁场不均匀性校正装置和振动抑制装置，以减少由倾斜磁场产生线圈13的振动引起的噪声，并且抑制图像质量恶化。

4. 发明授权

US5633588A Superconducting magnet apparatus using superconducting multilayer composite member, method of magnetizing the same and magnetic resonance imaging system employing the same 失效
标题翻译：使用超导多层复合构件的超导磁体装置，其磁化方法和使用其的磁共振成像系统
公开(公告)号：US5633588A
公开(公告)日：1997-05-27
申请号：US525211
申请日：1995-09-08
申请人： Takao Hommei , Yutaka Takuma , Hirotaka Takeshima , Hiroyuki Takeuchi , Yoshiyuki Miyamoto , Kiyoshi Fukutomi , Hajime Kawano
发明人： Takao Hommei , Yutaka Takuma , Hirotaka Takeshima , Hiroyuki Takeuchi , Yoshiyuki Miyamoto , Kiyoshi Fukutomi , Hajime Kawano
IPC分类号： G01R33/3815 , G01R33/3875 , H01F6/00 , G01V3/00
CPC分类号： G01R33/3815 , H01F6/00 , G01R33/3875
摘要： A superconducting magnet apparatus which includes a cryostat vessel for containing therein a coolant for realizing superconductivity, a magnetic flux generating unit disposed within the cryostat vessel and including a superconducting multilayer composite member constituting a sustaining medium for a persistent current which generates a magnetic flux along a center axis of a predetermined magnetic field space, and members holding the magnetic field generating unit within the cryostat vessel.
摘要翻译：一种超导磁体装置，包括用于容纳用于实现超导性的冷却剂的低温恒温器，设置在所述低温恒温器容器内的磁通量产生单元，并且包括构成持续电流的维持介质的超导多层复合构件，所述持续电流沿着预定磁场空间的中心轴，以及将该磁场产生单元保持在低温恒温器容器内的构件。

5. 发明授权

US5621324A Magnetic field generator for MRI 失效
标题翻译：磁场发生器用于MRI
公开(公告)号：US5621324A
公开(公告)日：1997-04-15
申请号：US146191
申请日：1994-01-18
申请人： Kimiharu Ota , Masaaki Aoki , Hiroyuki Takeuchi , Yasuhiro Marukawa , Hirotaka Takeshima , Chikako Nakamura
发明人： Kimiharu Ota , Masaaki Aoki , Hiroyuki Takeuchi , Yasuhiro Marukawa , Hirotaka Takeshima , Chikako Nakamura
IPC分类号： A61B5/055 , G01R33/383 , H01F7/02 , G01V3/00
CPC分类号： H01F7/0278 , A61B5/055 , G01R33/383
摘要： A magnet field generating apparatus for MRI, comprising:a plurality of permanent magnet assemblies disposed continuously around the angular inner circumference of a hexagonal tubular yoke to provide a uniform magnetic field at the center portion of the hollow space inside said permanent magnet assemblies; the permanent magnet assemblies forming a main magnetic field by a pair of oppositely disposed permanent magnet assemblies which are trapezoidal or square in cross-section; other pairs of permanent magnet assemblies having a triangular or square cross-section; each of the pairs of oppositely disposed permanent magnet assemblies has a side surface in contact with a part of the inner peripheral surface of the yoke and forms a plurality of permanent magnet blocks which are magnetized perpendicularly to the side surface in contact with the yoke so that the permanent magnet assemblies are magnetized perpendicularly to the side surface thereof in contact with the yoke; magnetic pole pieces disposed on each surface of the pair of oppositely disposed permanent magnet assemblies; and permanent magnet piece projections having the same magnetizing direction as the plurality of permanent magnet assemblies are respectively disposed on each surface of the paired oppositely disposed permanent magnet assemblies on which no magnetic pole piece is disposed.
摘要翻译： PCT No.PCT / JP93 / 00320 Sec。 371日期1994年1月18日 102（e）日期1994年1月18日PCT 1993年3月17日PCT公布。公开号WO93 / 18707 日期：1993年9月30日磁共振成像磁场产生装置，包括：多个永磁体组件，其围绕六边形管状磁轭的角内圆周连续设置，以在所述永磁体内部的中空空间的中心部分提供均匀的磁场磁铁组件所述永磁体组件通过一对相对设置的永磁体组件形成主磁场，所述永磁体组件是梯形或正方形的横截面; 其他成对的具有三角形或正方形横截面的永磁体组件; 每对相对设置的永磁体组件具有与磁轭的内周表面的一部分接触的侧表面，并且形成多个垂直于与磁轭接触的侧表面磁化的永磁体块，使得永磁体组件被垂直于其与轭的接触的侧表面磁化; 设置在一对相对设置的永磁体组件的每个表面上的磁极片; 并且具有与多个永磁体组件相同的磁化方向的永磁体片突起分别设置在不设置磁极片的成对相对设置的永久磁铁组件的每个表面上。

6. 发明授权

US07928820B2 Superconducting magnet and magnetic resonance imaging apparatus 有权
标题翻译：超导磁体和磁共振成像装置
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。

7. 发明申请

US20090189721A1 SUPERCONDUCTING MAGNET AND MAGNETIC RESONANCE IMAGING APPARATUS 有权
标题翻译：超导磁体和磁共振成像装置
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。

8. 发明授权

US5438264A Magnetic field generating apparatus 失效
标题翻译：磁场发生装置
公开(公告)号：US5438264A
公开(公告)日：1995-08-01
申请号：US82977
申请日：1993-06-29
申请人： Hirotaka Takeshima , Hiroyuki Takeuchi , Chikako Nakamura
发明人： Hirotaka Takeshima , Hiroyuki Takeuchi , Chikako Nakamura
IPC分类号： A61B5/055 , G01R33/38 , G01R33/383 , H01F7/02 , G01V3/00
CPC分类号： H01F7/0278 , G01R33/383
摘要： A magnetic field generating apparatus has a hollow permanent magnet formed of a plurality of permanent magnet elements arranged to have a polygonal section. Magnetization directions of the end portions of the hollow permanent magnet in its longitudinal direction are made different from those of the central portion thereof so that the magnetic field generated in a predetermined region in the hollow space of the permanent magnet is increased as compared with a case where the magnetizations of the hollow permanent magnet are all directed in the same direction.
摘要翻译：磁场产生装置具有由多个被设置为具有多边形截面的永磁体构成的中空永磁体。中空永久磁铁的长度方向的端部的磁化方向与其中心部分的磁化方向不同，使得在永磁体的中空空间中的预定区域中产生的磁场与壳体其中中空永磁体的磁化全部以相同方向指向。

9. 发明授权

US07605587B2 Magnetic resonance imaging apparatus 失效
标题翻译：磁共振成像装置
公开(公告)号：US07605587B2
公开(公告)日：2009-10-20
申请号：US11791878
申请日：2005-11-29
申请人： Hirotaka Takeshima
发明人： Hirotaka Takeshima
IPC分类号： G01V3/00
CPC分类号： A61B5/055 , G01R33/3806 , G01R33/381 , G01R33/3815 , G01R33/385 , G01R33/4215 , G01R33/422
摘要： A magnetic resonance imaging apparatus is provide that includes static magnetic field generation means arranged around an imaging space where an examinee is to be located and generating a static magnetic field in the imaging space; gradient magnetic field generation means arranged in the imaging space side of the static magnetic field generation means and generating a gradient magnetic field in the imaging space; and high-frequency magnetic field generation means arranged at the imaging space side of the gradient magnetic field generation means and generating a high-frequency magnetic field in the imaging space. The gradient magnetic field generation means has a concave portion in the vicinity of the imaging space depressed toward the static magnetic field generation means. At least a part of the high-frequency magnetic field generation means is contained in the concave portion.
摘要翻译：提供一种磁共振成像装置，其包括围绕成像空间布置的静态磁场产生装置，其中被检体将被定位并在成像空间中产生静态磁场; 设置在静磁场产生装置的成像空间侧的梯度磁场产生装置，并在成像空间中产生梯度磁场; 以及高频磁场产生装置，其布置在所述倾斜磁场产生装置的成像空间侧并在所述成像空间中产生高频磁场。梯度磁场产生装置在静止磁场产生装置上朝向成像空间附近具有凹部。高频磁场产生装置的至少一部分包含在凹部中。

10. 发明授权

US07307421B2 Magnetic resonance imaging device 有权
标题翻译：磁共振成像装置
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。

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