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1. 发明授权

US07961067B2 Superconducting magnet apparatus and magnetic resonance imaging apparatus 有权
标题翻译：超导磁体装置和磁共振成像装置
公开(公告)号：US07961067B2
公开(公告)日：2011-06-14
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： H01F1/00 , H01F6/00 , G01V3/00
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。

2. 发明申请

US20080024254A1 SUPERCONDUCTING MAGNET APPARATUS AND MAGNETIC RESONANCE IMAGING APPARATUS 有权
标题翻译：超级磁铁装置和磁共振成像装置
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。

3. 发明授权

US07567083B2 Superconductive magnetic apparatus for magnetic resonance imaging unit 有权
标题翻译：用于磁共振成像单元的超导磁性装置
公开(公告)号：US07567083B2
公开(公告)日：2009-07-28
申请号：US11723749
申请日：2007-03-21
申请人： Takeshi Nakayama , Mitsushi Abe , Hiroyuki Watanabe , Masanori Takahashi
发明人： Takeshi Nakayama , Mitsushi Abe , Hiroyuki Watanabe , Masanori Takahashi
IPC分类号： G01V3/00
CPC分类号： G01R33/3873 , G01R33/3806 , G01R33/3815 , G01R33/421
摘要： A super-conducting magnet apparatus in an MRI system which may reduce unevenness among magnetization characteristics of ferromagnetic elements arranged between super-conductive shield coils and superconducting main coils. There are provided a pair of super-conducting main coils, a pair of superconductive shield coils arranged on the axes of the pair of super-conducting main coils, being spaced from the pair of super-conducting main coils, and also arranged on opposite sides of a zone to be observed, and ferromagnetic elements arranged in parts of spaces extending from air core parts of the super-conducting main coils to air core parts of the super-conductive shield coils. The super-conductive shield coils have an outer diameter which is larger than that of the super-conducting main coils. The ferromagnetic elements are composed of a plurality of axially symmetric ferromagnetic members which are coaxially arranged, and which have a space in at least a radial part thereof, but not in a center axis part. With this configuration, the magnetic saturation of the ferromagnetic members may be facilitated. Thereby it is possible to reduce the effect of unevenness among magnetization characteristics of the ferromagnetic elements.
摘要翻译：一种MRI系统中的超导磁体装置，其可以减少配置在超导体屏蔽线圈与超导主线圈之间的铁磁性元件的磁化特性之间的不均匀性。设置有一对超导主线圈，一对超导屏蔽线圈，布置在一对超导主线圈的轴线上，与一对超导主线圈间隔开，并且还布置在相对侧以及配置在从超导主线圈的空气芯部分延伸到超导电屏蔽线圈的空芯部分的空间的部分的铁磁元件。超导电屏蔽线圈的外径大于超导主线圈的外径。铁磁元件由同轴布置的多个轴向对称铁磁构件组成，并且在至少其径向部分中具有空间，但不在中心轴部分。利用这种结构，铁磁部件的磁饱和度可以容易。由此，能够降低铁磁性元件的磁化特性之间的不均匀性的影响。

4. 发明申请

US20080100295A1 Superconductive magnetic apparatus for magnetic resonance imaging unit 有权
标题翻译：用于磁共振成像单元的超导磁性装置
公开(公告)号：US20080100295A1
公开(公告)日：2008-05-01
申请号：US11723749
申请日：2007-03-21
申请人： Takeshi Nakayama , Mitsushi Abe , Hiroyuki Watanabe , Masanori Takahashi
发明人： Takeshi Nakayama , Mitsushi Abe , Hiroyuki Watanabe , Masanori Takahashi
IPC分类号： G01R33/3815
CPC分类号： G01R33/3873 , G01R33/3806 , G01R33/3815 , G01R33/421
摘要： A super-conducting magnet apparatus in an MRI system which may reduce unevenness among magnetization characteristics of ferromagnetic elements arranged between super-conductive shield coils and superconducting main coils. There are provided a pair of super-conducting main coils, a pair of superconductive shield coils arranged on the axes of the pair of super-conducting main coils, being spaced from the pair of super-conducting main coils, and also arranged on opposite sides of a zone to be observed, and ferromagnetic elements arranged in parts of spaces extending from air core parts of the super-conducting main coils to air core parts of the super-conductive shield coils. The super-conductive shield coils have an outer diameter which is larger than that of the super-conducting main coils. The ferromagnetic elements are composed of a plurality of axially symmetric ferromagnetic members which are coaxially arranged, and which have a space in at least a radial part thereof, but not in a center axis part. With this configuration, the magnetic saturation of the ferromagnetic members may be facilitated. Thereby it is possible to reduce the effect of unevenness among magnetization characteristics of the ferromagnetic elements.
摘要翻译：一种MRI系统中的超导磁体装置，其可以减少配置在超导体屏蔽线圈与超导主线圈之间的铁磁性元件的磁化特性之间的不均匀性。设置有一对超导主线圈，一对超导屏蔽线圈，布置在一对超导主线圈的轴线上，与一对超导主线圈间隔开，并且还布置在相对侧以及配置在从超导主线圈的空气芯部分延伸到超导电屏蔽线圈的空芯部分的空间的部分的铁磁元件。超导电屏蔽线圈的外径大于超导主线圈的外径。铁磁元件由同轴布置的多个轴向对称铁磁构件组成，并且在至少其径向部分中具有空间，但不在中心轴部分。利用这种结构，铁磁部件的磁饱和度可以容易。由此，能够降低铁磁性元件的磁化特性之间的不均匀性的影响。

5. 发明授权

US08134433B2 Superconducting magnet apparatus 有权
标题翻译：超导磁体设备
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。

6. 发明申请

US20070057667A1 Magnet device 有权
标题翻译：磁铁装置
公开(公告)号：US20070057667A1
公开(公告)日：2007-03-15
申请号：US11513375
申请日：2006-08-31
申请人： Ryuya Ando , Mitsushi Abe , Takeshi Nakayama , Tsutomu Yamamoto
发明人： Ryuya Ando , Mitsushi Abe , Takeshi Nakayama , Tsutomu Yamamoto
IPC分类号： G01N27/84
CPC分类号： G01R33/421 , G01R33/3806
摘要： A magnet device has main coils in a pair positioned facing each other to form a static magnetic field space in between and external magnetic flux shielding coils placed coaxially to the main coils. The external magnetic flux shielding coils have a first coil group having a small coefficient of coil coupling and a second coil group having a coefficient of coil coupling greater than that of the first coil group. The first coil group is connected in series to the second coil group. External magnetic flux entering the magnetic field imaging space formed by main coils in a pair positioned facing each other is effectively warded off.
摘要翻译：磁体装置具有彼此面对的主线圈，以在其间形成静磁场空间，并且与主线圈同轴放置的外部磁通屏蔽线圈。外部磁通屏蔽线圈具有线圈耦合系数小的第一线圈组和具有大于第一线圈组的线圈耦合系数的第二线圈组。第一线圈组与第二线圈组串联连接。有效地消除了进入由成对定位的主线圈形成的磁场成像空间的外部磁通。

7. 发明授权

US07928730B2 Electromagnet apparatus generating a homogeneous magnetic field with ferromagnetic members arranged inside cryogenic vessels 有权
标题翻译：电磁体装置产生均匀的磁场，其中铁磁性构件布置在低温容器内
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

8. 发明授权

US08947089B2 Magnetic field shimming adjustment: reducing magnetic distribution errors by obtaining current potential distributions of MRI apparatus 有权
标题翻译：磁场匀场调整：通过获得MRI设备的电流分布来减少磁分布误差
公开(公告)号：US08947089B2
公开(公告)日：2015-02-03
申请号：US12991495
申请日：2009-05-08
申请人： Mitsushi Abe , Ryuya Ando , Takeshi Nakayama
发明人： Mitsushi Abe , Ryuya Ando , Takeshi Nakayama
IPC分类号： G01R33/3873 , G01R33/3875 , G01R33/389 , G01R33/383 , G01R33/38 , A61B5/055 , H01F7/02
CPC分类号： G01R33/3873 , A61B5/055 , G01R33/38 , G01R33/3806 , G01R33/383 , G01R33/3875 , G01R33/389 , H01F7/02 , H01F7/0284
摘要： A measured error magnetic field distribution is divided into eigen-mode components obtained by a singular decomposition and iron piece arrangements corresponding to respective modes are combined and arranged on a shim-tray. An eigen-mode to be corrected is selected in accordance with an attainable magnetic field accuracy (homogeneity) and appropriateness of arranged volume of the iron pieces. Because the adjustment can be made with the attainable magnetic field accuracy (homogeneity) being known, an erroneous adjustment can also be known, and the adjustment is automatically done during repeated adjustments. As a result, an apparatus with a high accuracy can be provided. In addition, there is an advantageous effect of being able to detect a poor magnet earlier by checking the attainable homogeneity.
摘要翻译：测量的误差磁场分布被划分为通过单个分解获得的特征模式分量，并且将对应于各个模式的铁片布置组合并布置在垫片托盘上。根据可获得的磁场精度（均匀性）和铁片的排列体积的适当性来选择要校正的本征模式。由于可以通过已知的可获得的磁场精度（均匀性）进行调整，所以也可以知道错误的调整，并且在重复调整期间自动进行调整。结果，可以提供高精度的装置。此外，通过检查可获得的均匀性，能够更早地检测不良磁体是有利的。

9. 发明申请

US20110089943A1 MAGNETIC FIELD ADJUSTMENT FOR MRI APPARATUS 有权
标题翻译： MRI装置的磁场调整
公开(公告)号：US20110089943A1
公开(公告)日：2011-04-21
申请号：US12991495
申请日：2009-05-08
申请人： Mitsushi Abe , Ryuya Ando , Takeshi Nakayama
发明人： Mitsushi Abe , Ryuya Ando , Takeshi Nakayama
IPC分类号： G01R33/44
CPC分类号： G01R33/3873 , A61B5/055 , G01R33/38 , G01R33/3806 , G01R33/383 , G01R33/3875 , G01R33/389 , H01F7/02 , H01F7/0284
摘要： A measured error magnetic field distribution is divided into eigen-mode components obtained by a singular decomposition and iron piece arrangements corresponding to respective modes are combined and arranged on a shim-tray. An eigen-mode to be corrected is selected in accordance with an attainable magnetic field accuracy (homogeneity) and appropriateness of arranged volume of the iron pieces. Because the adjustment can be made with the attainable magnetic field accuracy (homogeneity) being known, an erroneous adjustment can also be known, and the adjustment is automatically done during repeated adjustments. As a result, an apparatus with a high accuracy can be provided. In addition, there is an advantageous effect of being able to detect a poor magnet earlier by checking the attainable homogeneity.
摘要翻译：测量的误差磁场分布被划分为通过单个分解获得的特征模式分量，并且将对应于各个模式的铁片布置组合并布置在垫片托盘上。根据可获得的磁场精度（均匀性）和铁片的排列体积的适当性来选择要校正的本征模式。由于可以通过已知的可获得的磁场精度（均匀性）进行调整，所以也可以知道错误的调整，并且在重复调整期间自动进行调整。结果，可以提供高精度的装置。此外，通过检查可获得的均匀性，能够更早地检测不良磁体是有利的。

10. 发明授权

US07436179B2 Magnet device 有权
标题翻译：磁铁装置
公开(公告)号：US07436179B2
公开(公告)日：2008-10-14
申请号：US11513375
申请日：2006-08-31
申请人： Ryuya Ando , Mitsushi Abe , Takeshi Nakayama , Tsutomu Yamamoto
发明人： Ryuya Ando , Mitsushi Abe , Takeshi Nakayama , Tsutomu Yamamoto
IPC分类号： G01V3/00
CPC分类号： G01R33/421 , G01R33/3806
摘要： A magnet device has main coils in a pair positioned facing each other to form a static magnetic field space in between and external magnetic flux shielding coils placed coaxially to the main coils. The external magnetic flux shielding coils have a first coil group having a small coefficient of coil coupling and a second coil group having a coefficient of coil coupling greater than that of the first coil group. The first coil group is connected in series to the second coil group. External magnetic flux entering the magnetic field imaging space formed by main coils in a pair positioned facing each other is effectively warded off.
摘要翻译：磁体装置具有彼此面对的主线圈，以在其间形成静磁场空间，并且与主线圈同轴放置的外部磁通屏蔽线圈。外部磁通屏蔽线圈具有线圈耦合系数小的第一线圈组和具有大于第一线圈组的线圈耦合系数的第二线圈组。第一线圈组与第二线圈组串联连接。有效地消除了进入由成对定位的主线圈形成的磁场成像空间的外部磁通。

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