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公开(公告)号：US07567083B2
公开(公告)日：2009-07-28
申请号：US11723749
申请日：2007-03-21
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。
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公开(公告)号：US20080100295A1
公开(公告)日：2008-05-01
申请号：US11723749
申请日：2007-03-21
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。
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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
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。
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4.发明授权Superconducting magnet apparatus and magnetic resonance imaging apparatus using the same 失效超导磁体装置及使用其的磁共振成像装置公开(公告)号：US07126448B2
公开(公告)日：2006-10-24
申请号：US11101464
申请日：2005-04-08
IPC分类号： H01F6/00
CPC分类号： G01R33/3815
摘要： An MRI apparatus includes magnet members for compensating the magnetic field which are disposed to a thermal shield system of the superconducting apparatus. The magnet members for compensating the magnetic field are disposed at positions where temperature change in the vacuum chamber is not transferred to the interior of the vacuum chamber.
摘要翻译： MRI装置包括用于补偿磁场的磁体构件，其设置在超导装置的热屏蔽系统上。 用于补偿磁场的磁体构件设置在真空室中的温度变化不被传递到真空室内部的位置处。
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5.发明申请公开(公告)号：US20050146407A1
公开(公告)日：2005-07-07
申请号：US10980312
申请日：2004-11-04
IPC分类号： A61B5/055 , G01R33/38 , G01R33/3815 , G01R33/3873 , H01F6/00 , H01F6/04 , H01F1/00
CPC分类号： G01R33/3815
摘要： An MRI apparatus is characterized in that magnet members for compensating the magnetic field are disposed to a thermal shield system of the superconducting apparatus. It is another feature of the present invention that the magnet members for compensating the magnetic field are disposed at positions where temperature change in the vacuum chamber is not transferred to the interior of the vacuum chamber.
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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。
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7.发明申请Superconducting magnet apparatus and magnetic resonance imaging apparatus using the same 失效超导磁体装置及使用其的磁共振成像装置公开(公告)号：US20050190030A1
公开(公告)日：2005-09-01
申请号：US11101464
申请日：2005-04-08
IPC分类号： A61B5/055 , G01R33/38 , G01R33/3815 , G01R33/3873 , H01F6/00 , H01F6/04 , H01F1/00
CPC分类号： G01R33/3815
摘要： An MRI apparatus is characterized in that magnet members for compensating the magnetic field are disposed to a thermal shield system of the superconducting apparatus. It is another feature of the present invention that the magnet members for compensating the magnetic field are disposed at positions where temperature change in the vacuum chamber is not transferred to the interior of the vacuum chamber.
摘要翻译： MRI装置的特征在于，用于补偿磁场的磁体构件设置在超导装置的热屏蔽系统上。 本发明的另一特征在于，用于补偿磁场的磁体构件设置在真空室内的温度变化不被传递到真空室的内部的位置处。
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8.发明授权Electromagnet devices compatible with magnetic resonance and MRI devices where circulating current directions alternate between coil groups separated by elevation angles between 26.25 and 55 degrees 有权与磁共振和MRI装置兼容的电磁体装置，其中循环电流方向在由26.25和55度之间的仰角分开的线圈组之间交替公开(公告)号：US08698499B2
公开(公告)日：2014-04-15
申请号：US12516077
申请日：2007-09-19
IPC分类号： G01R33/381 , G01R33/3815
CPC分类号： G01R33/3806 , G01R33/3815 , H01F7/202
摘要： An electromagnet device which generates magnetic field in the direction perpendicular to the inserting direction of an inspection subject is reduced in size and weight by removing unnecessary arrangement as much as possible. A magnetic resonance imaging device is also provided. The electromagnet device comprises a first coil (31) through which a first circular current (J1) circulates forward, a second coil (32) through which a second circular current (J2) circulates reversely, and a coil group (30) through which a plurality of circular currents (J3-J6) circulate alternately forward and reversely. The first coil (30), the second coil (32) and the coil group (30) are arranged in this order to increase the angle of elevation θ (θ1
摘要翻译： 通过尽可能地去除不必要的布置，在与检查对象的插入方向垂直的方向上产生磁场的电磁装置的尺寸和重量减小。 还提供了一种磁共振成像装置。 电磁体装置包括第一线圈（31），第一圆形电流（J1）向前循环;第二线圈（32），第二圆形电流（J2）通过该线圈反向循环;线圈组（30） 多个圆形电流（J3-J6）交替地向前和向后循环。 第一线圈（30），第二线圈（32）和线圈组（30）以此顺序排列以增加仰角; （＆Thetas; 1 <＆thetas; 2 <＆thetas; 3）和不包括第二线圈（32）和线圈组（30）的空白区域（S）存在于仰角和角度之间的角度区域中; 2和 ＆thetas; 3。
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公开(公告)号：US20060001427A1
公开(公告)日：2006-01-05
申请号：US11169940
申请日：2005-06-30
申请人： Ryuya Ando , Mitsushi Abe , Hiroyuki Watanabe
发明人： Ryuya Ando , Mitsushi Abe , Hiroyuki Watanabe
IPC分类号： G01V3/00
CPC分类号： G01R33/3873
摘要： A magnetic resonance imaging apparatus and the magnet apparatus thereof comprise plural pairs of magnetic field generation sources, arranged face to face with each other, for forming a magnetic field space 3; and magnetic field homogeneity adjusting apparatuses 17 and 18 for providing homogeneity adjustment of the magnetic field formed in the magnetic field space 3. The magnetic field homogeneity adjusting apparatuses 17 and 18 contain a plurality of tapped holes 24 for installing a magnetic field homogeneity adjusting member 26 of smaller volume in a plate-formed tray made of a non-magnetic substance; and a plurality of mounts 25 for installing the magnetic field homogeneity adjusting member 27 of greater volume, these mounts being formed over the area containing a plurality of through-holes for permitting installation of a magnetic field homogeneity adjusting member 26 of smaller volume, whereby major magnetic field adjusting work can be performed independently of minor magnetic field adjusting work.
摘要翻译： 磁共振成像装置及其磁铁装置包括彼此面对面布置的多对磁场产生源，用于形成磁场空间3; 以及用于提供在磁场空间3中形成的磁场的均匀性调节的磁场均匀性调节装置17和18.磁场均匀性调节装置17和18包含多个用于安装磁场均匀性调节构件26的螺纹孔24 在由非磁性物质制成的板状托盘中的体积较小; 以及用于安装更大体积的磁场均匀性调节构件27的多个安装件25，这些安装件形成在包含多个通孔的区域上，用于允许安装较小体积的磁场均匀性调节构件26，由此主要 可以独立于小磁场调整工作进行磁场调整工作。
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公开(公告)号：US20110037469A1
公开(公告)日：2011-02-17
申请号：US12516077
申请日：2007-09-19
IPC分类号： G01R33/34
CPC分类号： G01R33/3806 , G01R33/3815 , H01F7/202
摘要： An electromagnet device which generates magnetic field in the direction perpendicular to the inserting direction of an inspection subject is reduced in size and weight by removing unnecessary arrangement as much as possible. A magnetic resonance imaging device is also provided. The electromagnet device comprises a first coil (31) through which a first circular current (J1) circulates forward, a second coil (32) through which a second circular current (J2) circulates reversely, and a coil group (30) through which a plurality of circular currents (J3-J6) circulate alternately forward and reversely. The first coil (30), the second coil (32) and the coil group (30) are arranged in this order to increase the angle of elevation θ (θ1
摘要翻译： 通过尽可能地去除不必要的布置，在与检查对象的插入方向垂直的方向上产生磁场的电磁装置的尺寸和重量减小。 还提供了一种磁共振成像装置。 电磁体装置包括第一线圈（31），第一圆形电流（J1）向前循环;第二线圈（32），第二圆形电流（J2）通过该线圈反向循环;线圈组（30） 多个圆形电流（J3-J6）交替地向前和向后循环。 第一线圈（30），第二线圈（32）和线圈组（30）以此顺序排列以增加仰角; （＆Thetas; 1 <＆thetas; 2 <＆thetas; 3）和不包括第二线圈（32）和线圈组（30）的空白区域（S）存在于仰角和角度之间的角度区域中; 2和 ＆thetas; 3。
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