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51. 发明授权

US06937017B2 Magnetic pole magnet device using the magnetic pole, and magnetic resonance imaging apparatus 失效
标题翻译：使用磁极的磁极磁体装置和磁共振成像装置
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。

52. 发明申请

US20050122114A1 Nuclear magnetic resonance spectrometer for liquid-solution 有权
公开(公告)号：US20050122114A1
公开(公告)日：2005-06-09
申请号：US11033630
申请日：2005-01-13
申请人： Michiya Okada , Tsuyoshi Wakuda , Shigeru Kakugawa , Hiroshi Morita , Katsuzo Aihara
发明人： Michiya Okada , Tsuyoshi Wakuda , Shigeru Kakugawa , Hiroshi Morita , Katsuzo Aihara
IPC分类号： G01R33/34 , G01N24/08 , G01R33/3815 , G01R33/465 , H01F5/00 , H01F7/20 , G01V3/00
CPC分类号： G01R33/34046 , G01R33/34053 , G01R33/34092 , G01R33/3806 , G01R33/3815 , G01R33/465
摘要： In a nuclear magnetic resonance spectrometer, the shape of a detection coil is changed from a conventional cage type to a solenoid type of higher sensitivity. Accordingly, differing from the conventional superconductive magnet of multilayer air core solenoids, a superconductive magnet is right and left divided to split magnets for generating 11 T, preferably, 14.1 T in the horizontal direction, and the magnetic field uniformity is set to 0.001 ppm or less and the temporal stability is set to 0.001 ppm or less.

53. 发明申请

US20050122112A1 NMR analyzer 失效
标题翻译： NMR分析仪
公开(公告)号：US20050122112A1
公开(公告)日：2005-06-09
申请号：US11025915
申请日：2005-01-03
申请人： Katsuzou Aihara , Michiya Okada , Shigeru Kakugawa , Hiroshi Morita , Tsuyoshi Wakuda
发明人： Katsuzou Aihara , Michiya Okada , Shigeru Kakugawa , Hiroshi Morita , Tsuyoshi Wakuda
IPC分类号： G01R33/32 , G01R33/345 , G01R33/3815 , G01R33/3875 , G01V3/00
CPC分类号： G01R33/34046 , G01R33/34053 , G01R33/3806 , G01R33/3815 , G01R33/44 , G01R33/4808
摘要： A first room-temperature space is formed penetrating through a cryostat along a center axis of a split-type multi-layer cylindrical superconducting coil system which has a ratio of the maximum empirical magnetic field to the central magnetic filed of not larger than 1.3 and is horizontally arranged such that the center axis of the coil is in the horizontal direction, a room-temperature shim coil system is arranged in said first room-temperature space to improve the homogeneity of the magnetic field, a second room-temperature space is formed penetrating through the cryostat and passing through the center of said split gap in the vertical direction, and a sample to be measured and an NMR probe having a solenoid-type probe coil are inserted in said second room-temperature space. Further, the NMR analyzer has a new function constituted by a system for irradiating and detecting the electromagnetic waves having wavelengths of shorter than 0.1 mm.
摘要翻译：第一室温空间形成为沿分离型多层圆柱形超导线圈系统的中心轴穿过低温恒温器，该分离型多层圆柱形超导线圈系统的最大经验磁场与中心磁场的比值不大于1.3，水平排列为使得线圈的中心轴线处于水平方向，在所述第一室温空间内布置室温垫片线圈系统，以改善磁场的均匀性，形成第二室温空间通过低温恒温器并沿着垂直方向穿过所述分割间隙的中心，并且将待测量样品和具有螺线管型探针线圈的NMR探针插入所述第二室温空间中。此外，NMR分析仪具有由用于照射和检测波长小于0.1mm的电磁波的系统构成的新功能。

54. 发明授权

US06859036B2 NMR analyzer 失效
标题翻译： NMR分析仪
公开(公告)号：US06859036B2
公开(公告)日：2005-02-22
申请号：US10315215
申请日：2002-12-10
申请人： Katsuzou Aihara , Michiya Okada , Shigeru Kakugawa , Hiroshi Morita , Tsuyoshi Wakuda
发明人： Katsuzou Aihara , Michiya Okada , Shigeru Kakugawa , Hiroshi Morita , Tsuyoshi Wakuda
IPC分类号： G01R33/32 , G01R33/345 , G01R33/3815 , G01R33/3875 , G01V3/00
CPC分类号： G01R33/34046 , G01R33/34053 , G01R33/3806 , G01R33/3815 , G01R33/44 , G01R33/4808
摘要： A first room-temperature space is formed penetrating through a cryostat along a center axis of a split-type multi-layer cylindrical superconducting coil system which has a ratio of the maximum empirical magnetic field to the central magnetic field of not larger than 1.3 and is horizontally arranged such that the center axis of the coil is in the horizontal direction, a room-temperature shim coil system is arranged in said first room-temperature space to improve the homogeneity of the magnetic field, a second room-temperature space is formed penetrating through the cryostat and passing through the center of said split gap in the vertical direction, and a sample to be measured and an NMR probe having a solenoid-type probe coil are inserted in said second room-temperature space. Further, the NMR analyzer has a new function constituted by a system for irradiating and detecting the electromagnetic waves having wavelengths of shorter than 0.1 mm.
摘要翻译：第一室温空间形成为沿着分离式多层圆柱形超导线圈系统的中心轴穿过低温恒温器，其具有最大经验磁场与中心磁场的比例不大于1.3，并且是水平排列为使得线圈的中心轴线处于水平方向，在所述第一室温空间内布置室温垫片线圈系统，以改善磁场的均匀性，形成第二室温空间通过低温恒温器并沿着垂直方向穿过所述分割间隙的中心，并且将待测量样品和具有螺线管型探针线圈的NMR探针插入所述第二室温空间中。此外，NMR分析仪具有由用于照射和检测波长小于0.1mm的电磁波的系统构成的新功能。

55. 发明授权

US06816047B2 Magnetic resonance imaging apparatus 失效
标题翻译：磁共振成像装置
公开(公告)号：US06816047B2
公开(公告)日：2004-11-09
申请号：US10391284
申请日：2003-03-18
申请人： Hirotaka Takeshima , Hajime Kawano , Shigeru Kakugawa , Noriaki Hino
发明人： Hirotaka Takeshima , Hajime Kawano , Shigeru Kakugawa , Noriaki Hino
IPC分类号： H01F600
CPC分类号： G01R33/3875 , G01R33/3806 , G01R33/3815 , G01R33/421
摘要： The present invention relates to techniques for enlarging an opening, which accommodates a subject, in a superconducting magnet apparatus for use in MRI system, so as to prevent the subject from feeling claustrophobic, and for realizing low magnetic field leakage therefrom, and for reducing the weight thereof, and for realizing a large high magnetic field strength uniform magnetic field region. Static magnetic field generating sources of the superconducting magnet apparatus are constituted by two sets of superconducting coils, the respective sets of which are placed in such a manner as to face each other across a uniform magnetic field generating region. Each of the sets of superconducting coils consists of a main coil for feeding electric current in a specific direction, a bucking coil for feeding electric current in a direction opposite to the direction of the electric current flow passing through the main coil, and a coil for correcting magnetic homogeneity. The diameter of the aforementioned main coil is set as being nearly equal to that of the aforesaid bucking coil. Further, the diameter of the coil for correcting the magnetic homogeneity is set as being less than that of the main coil. Moreover, an amount of electric current flowing through the coil for correcting the magnetic homogeneity is set as being less than that of electric current passing through the main coil. Furthermore, the distance between the two main coils facing each other is set as being shorter than that between the two bucking coils.

56. 发明授权

US5936498A Superconducting magnet apparatus and magnetic resonance imaging system using the same 失效
标题翻译：超导磁体装置及使用其的磁共振成像系统
公开(公告)号：US5936498A
公开(公告)日：1999-08-10
申请号：US913062
申请日：1997-09-05
申请人： Hirotaka Takeshima , Hajime Kawano , Shigeru Kakugawa
发明人： Hirotaka Takeshima , Hajime Kawano , Shigeru Kakugawa
IPC分类号： A61B5/055 , G01R33/38 , G01R33/3815 , G01R33/3873 , G01R33/421 , H01F6/00 , H01F7/20 , H01F1/00
CPC分类号： G01R33/421 , G01R33/3806 , H01F6/00 , G01R33/3815 , G01R33/3873
摘要： In a superconducting magnet apparatus for use in a magnetic resonance imaging system, an opening for accommodating a subject is enlarged, so that the subject is prevented from feeling claustrophobic, that an operator easily gets access to the subject, that low magnetic field leakage therefrom is realized, and that the manufacturing cost thereof can be reduced. In the superconducting magnet apparatus provided with two sets of superconducting coils placed across a uniform magnetic field region at an equal distance therefrom in such a manner as to face each other, disk-like ferromagnetic substances and cylindrical ferromagnetic substances are disposed around the superconducting coils. Further, a plurality of column-like ferromagnetic substances are interposed between the cylindrical ferromagnetic substances facing each other. Thus, a return path for external magnetic flux generated by the superconducting magnet coils is constituted. Consequently, the opening for accommodating a subject is enlarged, so that subjects can be prevented from feeling claustrophobic, that an operator can easily gets access to the subject, that low magnetic field leakage therefrom can be realized, and that the manufacturing cost thereof can be reduced.
摘要翻译： PCT No.PCT / JP97 / 00039 Sec。 371日期：1997年9月5日 102（e）1997年9月5日PCT PCT 1997年1月10日PCT公布。公开号WO97 / 25726 日期1997年7月17日在用于磁共振成像系统的超导磁体装置中，扩大了用于容纳被摄体的开口，从而防止受试者感到幽闭恐惧，操作者容易获得对象的接近，低实现了磁场的泄漏，可以降低其制造成本。在设置有两组超导线圈的超导磁体设备中，以彼此相对的方式设置在与其相等的距离处的均匀磁场区域的两组超导线圈中，盘状铁磁物质和圆柱形铁磁物质围绕超导线圈设置。此外，在彼此面对的圆柱形铁磁物质之间插入多个柱状铁磁物质。因此，构成由超导磁体线圈产生的外部磁通的返回路径。因此，用于容纳被摄体的开口被扩大，从而可以防止受试者感到幽闭恐惧，操作者可以容易地进入对象，可以实现低磁场泄漏，并且其制造成本可以是减少

57. 发明授权

US5812042A Superconducting magnet formed by laminating hollow conductor plates 失效
标题翻译：通过层叠空心导体板形成的超导磁体
公开(公告)号：US5812042A
公开(公告)日：1998-09-22
申请号：US604021
申请日：1996-02-20
申请人： Naoki Maki , Nobuhiro Hara , Shigeru Kakugawa , Masayuki Shibata , Noriaki Hino , Kenichi Hattori
发明人： Naoki Maki , Nobuhiro Hara , Shigeru Kakugawa , Masayuki Shibata , Noriaki Hino , Kenichi Hattori
IPC分类号： H01F6/02 , H01F6/00 , H02J15/00
CPC分类号： H01F6/006 , H01F6/00 , H02J15/00 , Y02E40/67 , Y10S505/726 , Y10S505/727 , Y10S505/879
摘要： A laminated superconducting magnet includes a multilayer short-circuit superconductor group 2 formed by uniting superposed hollow superconducting plates, and an exciting coil 3 for inducing a current from an external power source 4 to the multilayer short-circuit superconductor group 2 for operation in a permanent current mode. Even if some of the superconducting plates are quenched, the other normal superconducting plates share the excess current temporarily. Therefore, the entire superconducting magnet is not quenched.
摘要翻译：叠层超导磁体包括通过将重叠的中空超导板结合而形成的多层短路超导体组2和用于将来自外部电源4的电流引导到多层短路超导体组2的励磁线圈3，用于永久性地操作当前模式。即使某些超导板被淬火，其他正常的超导板临时共享过剩电流。因此，整个超导磁体不被淬火。

58. 发明授权

US5296812A Superconducting magnet assembly for MRI and MRI diagnostic apparatus 失效
标题翻译：用于MRI和MRI诊断仪器的超导磁体组件
公开(公告)号：US5296812A
公开(公告)日：1994-03-22
申请号：US998852
申请日：1992-12-30
申请人： Masashi Kitamura , Shigeru Kakugawa
发明人： Masashi Kitamura , Shigeru Kakugawa
IPC分类号： A61B5/055 , G01R33/20 , G01R33/381 , G01R33/3815 , G01R33/3875 , G01R33/421 , H01F6/00
CPC分类号： G01R33/3815 , G01R33/3875 , G01R33/421
摘要： A superconducting means for MRI including seven to nine small superconducting coils situated in such a manner that the number of turns of these coils becomes progressively greater towards the outside, and preventing the occurrence of 2nd to 16th order inhomogeneous fields.
摘要翻译：一种用于MRI的超导装置，其包括七至九个小型超导线圈，以使得这些线圈的匝数向外部逐渐变大，并且防止发生第二至第十六阶非均匀场。

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