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1.发明授权Open MRI system with a vertical static field and an imaging volume closer to the lower than to the upper magnet assembly 失效开放式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。
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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。
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3.发明授权Superconducting magnet apparatus and method of regulating magnetization thereof 失效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。
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公开(公告)号：US06580346B1
公开(公告)日：2003-06-17
申请号：US08895269
申请日：1997-07-16
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。
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公开(公告)号：US06816047B2
公开(公告)日：2004-11-09
申请号：US10391284
申请日：2003-03-18
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.
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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。
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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。
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8.发明授权Superconducting magnet apparatus and magnetic resonance imaging system using the same 失效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
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
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9.发明授权
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。
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公开(公告)号：USD663333S1
公开(公告)日：2012-07-10
申请号：US29413899
申请日：2012-02-22
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