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1. 发明授权

US06600318B1 Open MRI system with a vertical static field and an imaging volume closer to the lower than to the upper magnet assembly 失效
标题翻译：开放式MRI系统具有垂直静电场和成像体积，接近低于上磁体组件
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。

2. 发明授权

US6037850A Superconducting magnet apparatus and method of regulating magnetization thereof 失效
标题翻译：超导磁体装置及其磁化强度的调节方法
公开(公告)号：US6037850A
公开(公告)日：2000-03-14
申请号：US952722
申请日：1998-01-16
申请人： Takao Honmei , Hirotaka Takeshima , Hajime Kawano , Yutaka Takuma , Munenori Kotabe , Naoki Maki , Nobuhiro Hara , Shigeru Kakugawa , Noriaki Hino
发明人： Takao Honmei , Hirotaka Takeshima , Hajime Kawano , Yutaka Takuma , Munenori Kotabe , Naoki Maki , Nobuhiro Hara , Shigeru Kakugawa , Noriaki Hino
IPC分类号： H01F13/00 , G01R33/3815 , H01F6/00 , H01F1/00
CPC分类号： H01F6/00 , G01R33/3815
摘要： A small-sized high-precision superconducting magnet apparatus which can prevent an occurrence of the principal factor in generating a quench and can restrain the magnetic flux from varying with time, and a method of regulating the magnetization of such a superconducting magnet apparatus, by which the superconducting magnet apparatus can be uniformly magnetized. Superconducting magnet apparatus of the present invention has: a cooling container; a holding medium for holding a persistent current therein, which is placed in said cooling container and is operative to generate a magnetic flux in a uniform magnetic field region (FOV); static-magnetic-field generating means composed of a plurality of cylinders using superconducting composite plate materials; a cylinder supporting base for holding the plurality of cylinders; and temperature regulating devices (not shown in FIG. 67) embedded in the cylinders, respectively. Magnetization of the static-magnetic-field generating means is performed by induction-magnetizing. Further, the regulation of a magnetization value of the static-magnetic-field generating means is regulated by controlling the temperature of the cylinders by means of the temperature regulating devices.
摘要翻译： PCT No.PCT / JP97 / 00951 Sec。 371日期1998年1月16日 102（e）日期1998年1月16日PCT 1997年3月21日PCT公布。出版物WO97 / 35328 日期1997年9月25日一种小型高精度超导磁体装置，其能够防止产生淬火的主要因素的发生并且可以抑制磁通量随时间变化，以及调节这种超导体的磁化的方法磁铁装置可以使超导磁体装置均匀地磁化。本发明的超导磁体装置具有：冷却容器; 用于保持持久电流的保持介质，其被放置在所述冷却容器中并且可操作以在均匀的磁场区域（FOV）中产生磁通量; 使用超导复合板材料的多个气缸构成的静磁场产生装置; 用于保持多个气缸的气缸支撑基座; 和分别嵌入在气缸中的温度调节装置（图67中未示出）。通过感应磁化来进行静磁场产生装置的磁化。此外，通过温度调节装置控制气缸的温度来调节静磁场产生装置的磁化值的调节。

3. 发明授权

US06853281B1 Magnet apparatus and mri apparatus 失效
标题翻译：磁铁设备和仪器
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。

4. 发明授权

US06580346B1 Magnetic resonance imaging apparatus 失效
标题翻译：磁共振成像装置
公开(公告)号：US06580346B1
公开(公告)日：2003-06-17
申请号：US08895269
申请日：1997-07-16
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： G01V300
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.
摘要翻译：本发明涉及在用于MRI系统的超导磁体装置中扩大容纳对象的开口的技术，以防止受试者感到幽闭恐怖，并且为了实现低磁场泄漏，并且为了减少并且用于实现大的高磁场强度均匀的磁场区域。超导磁体装置的静磁场发生源由两组超导线圈构成，其中各组以如下方式放置：面对彼此跨越均匀的磁场产生区域。每组超导线圈由用于沿特定方向馈送电流的主线圈，用于沿与通过主线圈的电流流动方向相反的方向馈送电流的降压线圈和用于矫正磁同质性。上述主线圈的直径设定为与前述的搭扣线圈大致相等。此外，用于校正磁性均匀性的线圈的直径被设定为小于主线圈的直径。此外，流过用于校正磁性均匀性的线圈的电流量被设定为小于通过主线圈的电流的电流量。此外，彼此面对的两个主线圈之间的距离被设定为短于两个降压线圈之间的距离。

5. 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.

6. 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

7. 发明授权

US06909348B2 Low-leakage magnetic-field magnet and shield coil assembly 失效
标题翻译：低泄漏磁场磁体和屏蔽线圈组件
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。

8. 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。

9. 发明申请

US20070216414A1 Nuclear magnetic resonance spectrometer for liquid-solution 失效
标题翻译：用于液体溶液的核磁共振光谱仪
公开(公告)号：US20070216414A1
公开(公告)日：2007-09-20
申请号：US11708028
申请日：2007-02-20
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： 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.
摘要翻译：在核磁共振光谱仪中，检测线圈的形状从传统的笼型改变为更高灵敏度的螺线管型。因此，与传统的多层空心螺线管的超导磁体不同，超导磁体被左右划分成用于在水平方向上产生11T最好为11.1T的分割磁体，并且将磁场均匀性设定为0.001ppm以下时间稳定度设定为0.001ppm以下。

10. 发明授权

US07208954B2 NMR analyzer 失效
公开(公告)号：US07208954B2
公开(公告)日：2007-04-24
申请号：US10725411
申请日：2003-12-03
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： 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.

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