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1. 发明专利

JP2005168809A Superconducting magnet device 有权
标题翻译：超级磁铁设备
公开(公告)号：JP2005168809A
公开(公告)日：2005-06-30
申请号：JP2003413175
申请日：2003-12-11
申请人： Hitachi Eng Co Ltd , Hitachi Ltd , Hitachi Medical Corp , 日立エンジニアリング株式会社 , 株式会社日立メディコ , 株式会社日立製作所
发明人： ANDO TATSUYA , ABE MITSUJI , WATANABE HIROYUKI , SUZUKI KUNIHITO , TAKAHASHI MASANORI , WADAYAMA YOSHIHIDE , YAO TAKESHI , TAKEUCHI HIROYUKI
IPC分类号： G01R33/3815 , A61B5/055 , G01R33/3873 , H01F6/00 , H01L39/04
摘要： PROBLEM TO BE SOLVED: To provide a space-saving means for facilitating the adjustment of a magnetic field by a shim member by effectively controlling the influence of a driving magnetic field caused by a gradient magnetic field coil or a superconducting coil, and controlling the magnetic force working on the shim member. SOLUTION: The superconducting magnet device has coil containers 10 and 12, which respectively store main coils 20 and 22 and correction coils 24, 26, 28 and 30, disposed facing each other. The coil containers are connected to each other via connecting rods 16 and 18, and the space between the coil containers is a magnetic space 14 with a static magnetic field. Recesses 38 and 40 are formed on the surfaces of the coil containers facing the magnetic space, and shield substrates 54, 56, 58 and 60 made of aluminum or copper are disposed on wall surfaces of the recesses. Female screw-shaped insertion holes 62 are formed on the shield substrates 54 and 56, and female screw-shaped insertion holes 66 are formed on the shield substrates 58 and 60. A screw 64 or a holder 72 with the shim member 76 is inserted in either one insertion hole 62 or 66 for adjusting a component of the unevenness of the magnetic field in an imaging region 52. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：通过有效地控制由梯度磁场线圈或超导线圈引起的驱动磁场的影响，提供了一种通过垫片构件来促进磁场调节的节省空间的装置，以及控制作用在垫片构件上的磁力。解决方案：超导磁体装置具有线圈容器10和12，其分别存储彼此相对设置的主线圈20和22以及校正线圈24,26,28和30。线圈容器通过连接杆16和18彼此连接，并且线圈容器之间的空间是具有静态磁场的磁空间14。凹槽38和40形成在面向磁性空间的线圈容器的表面上，并且由铝或铜制成的屏蔽基板54,56,58和60设置在凹部的壁表面上。在屏蔽基板54,56上形成有母螺纹状的插入孔62，在屏蔽基板58,60上形成有内螺纹状的插入孔66.将带有垫片构件76的螺钉64或保持架72插入一个用于调整成像区域52中的磁场不均匀性的分量的插入孔62或66。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2007159741A Magnetic resonance imaging apparatus and electromagnet device 审中-公开
标题翻译：磁共振成像装置和电子设备
公开(公告)号：JP2007159741A
公开(公告)日：2007-06-28
申请号：JP2005358350
申请日：2005-12-12
申请人： Hitachi Ltd , Hitachi Medical Corp , 株式会社日立メディコ , 株式会社日立製作所
发明人： FUJIMOTO RINTARO , ABE MITSUJI , ANDO TATSUYA , TAKEUCHI HIROYUKI , TAKESHIMA HIROTAKA
IPC分类号： A61B5/055 , G01R33/3815 , G01R33/3875 , H01F6/00
摘要： PROBLEM TO BE SOLVED: To provide a superconducting magnet apparatus generating a magnetic fields in apparatuses such as a magnetic resonance imaging apparatus (an MRI apparatus) which generates a large static magnetic field having high uniformity and high strength and provides a large effective space for receiving a subject. SOLUTION: Each of main coils (20) located in the vicinity of the effective space receiving a subject has a shape that its minimum inside diameter and maximum inside diameter crosses at right angles and in the middle of themselves (a race track shape or the like). The main coils (20) includes at least inner coils (22) and outer coils (21). Oblateness of the inner coils (22) are larger than that of the outer coils (21). COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种在诸如磁共振成像装置（MRI装置）等装置中产生磁场的超导磁体装置，其产生具有高均匀性和高强度的大静态磁场，并提供大的有效接收主题的空间。解决方案：位于接收对象的有效空间附近的主线圈（20）中的每个主要线圈（20）具有其最小内径和最大内径的直角与自身中间交叉的形状（赛道形状或类似物）。主线圈（20）至少包括内线圈（22）和外线圈（21）。内部线圈（22）的容积大于外侧线圈（21）的宽度。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2007159724A Magnetic resonance imaging apparatus and electromagnetic device 审中-公开
标题翻译：磁共振成像装置和电磁装置
公开(公告)号：JP2007159724A
公开(公告)日：2007-06-28
申请号：JP2005358128
申请日：2005-12-12
申请人： Hitachi Ltd , Hitachi Medical Corp , 株式会社日立メディコ , 株式会社日立製作所
发明人： ANDO TATSUYA , ABE MITSUJI , FUJIMOTO RINTARO , TAKEUCHI HIROYUKI , TAKESHIMA HIROTAKA
IPC分类号： A61B5/055
摘要： PROBLEM TO BE SOLVED: To provide a magnetic resonance imaging apparatus and an electromagnetic device, which are capable of forming a further uniform static magnetic field space.
SOLUTION: This electromagnetic device of the MRI apparatus is provided with at least a cylindrical vacuum container having a vertical cross section crossing orthogonally to the axis of an opening section of an inner cylinder formed into a race track shape. An annular refrigerant container disposed in the annular vacuum container surrounding the opening section is disposed with a pair of main coils 201, a pair of correction coils 202 and a shield coil 203 which have the race track shape respectively. Steel 6 as a magnetic body is disposed inside the correction coils 202 in the refrigerant container. The use of the annular coils with the race track shape can form the more uniform static magnetic field space than that of the axially symmetrical ones.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供能够形成更均匀的静态磁场空间的磁共振成像装置和电磁装置。解决方案：MRI装置的这种电磁装置设置有至少一个具有垂直横截面的圆柱形真空容器，该垂直横截面与形成为赛道形状的内圆筒的开口部分的轴线正交。设置在围绕开口部的环形真空容器内的环状制冷剂容器分别配置有分别具有赛道形状的一对主线圈201，一对校正线圈202和屏蔽线圈203。作为磁性体的钢6配置在制冷剂容器内的校正线圈202的内部。使用具有赛道形状的环形线圈可以形成比轴向对称的更均匀的静磁场空间。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2009172129A 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：JP2009172129A
公开(公告)日：2009-08-06
申请号：JP2008013577
申请日：2008-01-24
申请人： Hitachi Ltd , Hitachi Medical Corp , 株式会社日立メディコ , 株式会社日立製作所
发明人： CHIBA TOMOO , WATANABE HIROYUKI , TAKESHIMA HIROTAKA , KARASHI SHIGEKI , ABE MITSUJI , TAKEUCHI HIROYUKI
IPC分类号： A61B5/055 , G01R33/3815 , G01R33/3873 , H01F6/00
CPC分类号： H01F6/04 , G01R33/3804 , G01R33/3806 , G01R33/3815
摘要： PROBLEM TO BE SOLVED: To provide a superconducting magnet apparatus which suppresses a change of temperature of magnetic members low with respect to a change of room temperature over long term, is small in change of magnetic field homogeneity, and can change a temperature of the magnetic members in a short time as well. SOLUTION: The superconducting magnet apparatus 2 includes: superconducting coils 11a and 11b having annular shapes for generating magnetic fields; a coil vessel 9 for housing the superconducting coils 11a and 11b along with a refrigerant 14; a vacuum vessel 3 for encircling the coil vessel 9 and holding its inside vacuum; magnetic members 12a, 12b, 13a, and 13b which are installed inside the vacuum vessel 3, supported with thermal insulation from the coil vessel 9, and compensate the magnetic fields. The superconducting magnet apparatus 2 includes: a first heat supply and absorption part 44 which is provided outside the vacuum vessel 3, is thermally connected to the vacuum vessel 3, and supplies or absorbs heat; and first thermal conducting members 25 and 27 which are installed inside the vacuum vessel 3, and thermally connected to the vacuum vessel 3 and the magnetic members 12a, 12b, 13a, and 13b. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种长期地抑制磁性部件的温度变化低的超导磁体装置，磁场均匀性的变化小，能够改变温度的磁性成员也在短时间内。超导磁体装置2包括：具有用于产生磁场的环形形状的超导线圈11a和11b; 用于将超导线圈11a和11b与制冷剂14一起容纳的线圈容器9; 用于环绕线圈容器9并保持其内部真空的真空容器3; 磁性构件12a，12b，13a，13b，其安装在真空容器3的内部，由线圈容器9进行热绝缘支撑，并补偿磁场。超导磁体装置2包括：设置在真空容器3外部的第一供热部44与真空容器3热连接，供给或吸收热量; 和第一导热构件25和27，其安装在真空容器3的内部，并且与真空容器3和磁性构件12a，12b，13a和13b热连接。版权所有（C）2009，JPO＆INPIT

5. 发明专利

JP2008125895A Magnetic resonance imaging apparatus 有权
标题翻译：磁共振成像装置
公开(公告)号：JP2008125895A
公开(公告)日：2008-06-05
申请号：JP2006315912
申请日：2006-11-22
申请人： Hitachi Ltd , Hitachi Medical Corp , 株式会社日立メディコ , 株式会社日立製作所
发明人： IMAMURA YUKINOBU , ABE MITSUJI , WATANABE HIROYUKI , MOTOSHIROMIZU HIROBUMI , TAKEUCHI HIROYUKI
IPC分类号： A61B5/055 , G01R33/3815 , H01F6/00
摘要： PROBLEM TO BE SOLVED: To provide a magnetic resonance imaging apparatus (MRI apparatus) which generates a uniform magnetic field directing a vertical direction by a superconductive coil, in which uniformity of the uniform magnetic field is not affected by vibration of a vacuum container even when the container vibrates. SOLUTION: A static magnetic field generation part 30 in the MRI apparatus has: a refrigerant container 35 for storing the superconductive coil 31 and refrigerant L; and the vacuum container 40 comprising a support member 44 for supporting the refrigerant container 35 and facing members 41a and 42 for fixing a gradient magnetic field generation part 13 so that the generation part 13 faces an imaging area R. At least a part of the facing member 41a is composed so that an electricity resistance in a circle direction becomes larger in comparison with a flat plate member which is made from the same material as that of the support member 44 and is assumed to have the same rigidity as that thereof. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种通过超导线圈产生引导垂直方向的均匀磁场的磁共振成像装置（MRI装置），其中均匀磁场的均匀性不受真空振动的影响容器即使容器振动。解决方案：MRI装置中的静磁场产生部分30具有用于存储超导线圈31和制冷剂L的制冷剂容器35; 并且真空容器40包括用于支撑制冷剂容器35的支撑构件44和用于固定梯度磁场产生部分13的面对构件41a和42，使得生成部13面向成像区域R.至少一部分面构件41a构成为与由与支撑构件44的材料相同的材料制成的平板构件相比，圆形方向的电阻变大，并且假设其具有与其相同的刚性。版权所有（C）2008，JPO＆INPIT

6. 发明专利

JP2014004476A High-frequency coil and magnetic resonance imaging apparatus using the same 有权
标题翻译：高频线圈和磁共振成像装置使用它
公开(公告)号：JP2014004476A
公开(公告)日：2014-01-16
申请号：JP2013187991
申请日：2013-09-11
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： SAOTOME ETSUHISA , BITO YOSHITAKA , TAKEUCHI HIROYUKI , TAKAHASHI TETSUHIKO , OCHI HISAAKI , HABARA HIDETA
IPC分类号： A61B5/055
CPC分类号： G01R33/34 , A61B5/055 , G01R33/34046 , G01R33/34084 , G01R33/3453 , G01R33/365 , G01R33/3657 , G01R33/3678 , G01R33/422
摘要： PROBLEM TO BE SOLVED: To provide a technique for securing a wide examination space without causing any increase in manufacturing costs and without largely lowering irradiation efficiency and uniformity of irradiation distribution in an imaging region in a tunnel type MRI apparatus.SOLUTION: The invention provides an RF coil unit in which four partial cylindrical coils are disposed at spaces in the peripheral direction two by two opposite to each other inside a cylindrical high-frequency shield, and magnetic fields generated by the individual partial cylindrical coils are composed to generate a circularly polarized or elliptically polarized magnetic field. Each of the partial cylindrical coils includes: a partial cylindrical conductor; a plurality of first conductors substantially parallel to the central axis of the high-frequency shield; a plurality of capacitors connecting both ends of each first conductor and the partial cylindrical conductor; and a second conductor to which at least one end of the first conductor is adjacent. A high-frequency signal having an identical reference frequency, and a desired amplitude ratio and a phase difference is supplied to each partial cylindrical coil.
摘要翻译：要解决的问题：提供一种用于确保宽的检查空间的技术，而不会导致制造成本的任何增加，并且不会大大降低隧道式MRI设备中的成像区域的照射效率和照射分布的均匀性。解决方案：本发明提供一种射频线圈单元，其中四个部分圆柱形线圈在圆柱形高频屏蔽内在彼此相对的周向方向上的两个空间处设置，并且由各个部分圆柱形线圈产生的磁场被构成以产生圆极化或椭圆偏振磁场。每个部分圆柱形线圈包括：部分圆柱形导体; 基本上平行于高频屏蔽的中心轴线的多个第一导体; 连接每个第一导体的两端和部分圆柱形导体的多个电容器; 以及第一导体的至少一端相邻的第二导体。将具有相同参考频率，期望振幅比和相位差的高频信号提供给每个部分圆柱形线圈。

7. 发明专利

JP2009261422A Magnetic resonance imaging apparatus 有权
标题翻译：磁共振成像装置
公开(公告)号：JP2009261422A
公开(公告)日：2009-11-12
申请号：JP2008110656
申请日：2008-04-21
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： KUROME AKIRA , TAKEUCHI HIROYUKI , IMAMURA YUKINOBU , ABE MITSUJI
IPC分类号： A61B5/055 , G01R33/421
摘要： PROBLEM TO BE SOLVED: To eliminate the unevenness of an eddy current generated in a conductor in the vicinity by the drive of a gradient magnetic field coil and to prevent the degradation of image quality due to eddy current unevenness. SOLUTION: The MRI apparatus has a pair of static magnetic field generation sources arranged facing each other and forming a uniform magnetic field area there between, and a pair of gradient magnetic field coils arranged facing each other across the uniform magnetic field area on the opposing surface side of the static magnetic field generation source. A static magnetic field generator has a recess for housing the inclined magnetic field coil and the wiring material of the inclined magnetic field coil is housed in the recess. The shape and/or arrangement of the wiring material of the inclined magnetic field coil is adjusted so as to make a desired eddy current flow to the conductor near the inclined magnetic field coil. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：通过梯度磁场线圈的驱动来消除在附近的导体中产生的涡流的不均匀性并且防止由于涡流不均匀性引起的图像质量的劣化。解决方案：MRI装置具有一对彼此相对布置的静态磁场产生源，并且在它们之间形成均匀的磁场区域，并且一对梯度磁场线圈彼此面对地跨越均匀的磁场区域静磁场产生源的相对表面侧。静态磁场发生器具有用于容纳倾斜磁场线圈的凹部，倾斜磁场线圈的配线材料容纳在凹部中。调整倾斜磁场线圈的布线材料的形状和/或布置，以使所需的涡流流向倾斜磁场线圈附近的导体。版权所有（C）2010，JPO＆INPIT

8. 发明专利

JP2008119214A Magnetic resonance imaging device and rf irradiation coil 有权
标题翻译：磁共振成像装置和射频辐射线圈
公开(公告)号：JP2008119214A
公开(公告)日：2008-05-29
申请号：JP2006305841
申请日：2006-11-10
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： YAO TAKESHI , TAKEUCHI HIROYUKI , OCHI HISAAKI
IPC分类号： A61B5/055 , G01R33/34
摘要： PROBLEM TO BE SOLVED: To provide the realistic mounting mode of an RF irradiation coil in an MRI device where the outer diameter of the RF irradiation coil is larger than the smallest inner diameter of a tilted magnetic field coil.
SOLUTION: A part or the whole of the RF irradiation coil is composed of a flexible conductor to be foldable. The RF irradiation coil is folded and inserted to be fixed in the recess of the tilted magnetic field coil. Alternately, the RF irradiation coil is divided into a plurality of pieces in a peripheral direction and inserted to the inside of the tilted magnetic field coil to be assembled inside with a connector.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供RF照射线圈在射频照射线圈的外径大于倾斜磁场线圈的最小内径的MRI装置中的现实安装模式。解决方案：RF辐射线圈的一部分或全部由可折叠的柔性导体组成。 RF照射线圈被折叠并插入以固定在倾斜磁场线圈的凹部中。或者，RF照射线圈沿圆周方向分成多个片，并插入到倾斜的磁场线圈的内部，以与连接器组装在一起。版权所有（C）2008，JPO＆INPIT

9. 发明专利

JP2008028429A Superconducting magnet apparatus and magnetizing method utilizing superconducting multilayered complex 有权
标题翻译：超级磁铁装置和使用超级多层复合材料的磁化方法
公开(公告)号：JP2008028429A
公开(公告)日：2008-02-07
申请号：JP2007268536
申请日：2007-10-16
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： HONNA TAKAO , TAKUMA YUTAKA , TAKESHIMA HIROTAKA , KAWANO HAJIME , TAKEUCHI HIROYUKI , MIYAMOTO YOSHIYUKI , FUKUTOMI KIYOSHI
IPC分类号： H01F6/00 , H01F6/04
摘要： PROBLEM TO BE SOLVED: To provide a superconducting magnet apparatus to prevent generated magnetic flux from attenuating, to prevent quenching from developing, to obtain high and uniform manufacturing preciseness, and to downsize and lighten the whole apparatus. SOLUTION: Liquid helium is held in a coolant container 11 wherein a superconducting multilayered complex tubular body 13 is soaked. Permanent current flows through the tubular body 13 in its circumferential direction, therefor magnetic flux passing through inside space of the tubular body 13 is generated by the permanent current. COPYRIGHT: (C)2008,JPO&INPIT

10. 发明专利

JP2005046587A Magnetic resonance imaging apparatus and method for demagnetizing its residual magnetic field 有权
标题翻译：磁共振成像装置及其残留磁场的去磁方法
公开(公告)号：JP2005046587A
公开(公告)日：2005-02-24
申请号：JP2003380242
申请日：2003-11-10
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： MIYAWAKI SHOICHI , TAKEUCHI HIROYUKI , SAITO YASUMASA
IPC分类号： G01R33/28 , A61B5/055 , G01R33/387 , G01R33/48
摘要： PROBLEM TO BE SOLVED: To solve the problems such as deterioration of image quality, restrictions on photographing method, and so on caused by a residual magnetic field generated by a magnetic device of an MRI apparatus.
SOLUTION: The MRI apparatus having a magnetic device with a ferromagnetic material comprises a memory means for memorizing a response curve of the residual magnetic field of the magnetic device, and a compensating means for updating the response curve of the residual magnetic field in real time based on a record of applied gradient magnetic fields and compensating the gradient magnetic field to be applied determined by the updated response curve of the residual magnetic field, as a means for compensating the residual magnetic field generated by the applied gradient magnetic field. The compensating means applies a magnetic field for compensating the residual magnetic field determined by the latest response curve of the residual magnetic field to the gradient magnetic field to be applied, which realizes real time compensation of the residual magnetic field.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决问题：解决由MRI装置的磁性装置产生的残留磁场引起的图像质量劣化，拍摄方法的限制等问题。解决方案：具有铁磁材料的磁性装置的MRI装置包括用于存储磁性装置的残余磁场的响应曲线的存储装置，以及用于更新残留磁场的响应曲线的补偿装置基于所施加的梯度磁场的记录的实时，并且补偿由残余磁场的更新的响应曲线确定的要施加的梯度磁场，作为用于补偿由所施加的梯度磁场产生的残余磁场的装置。补偿装置将用于补偿由剩余磁场的最新响应曲线确定的残余磁场的磁场施加到要施加的梯度磁场，这实现了残余磁场的实时补偿。版权所有（C）2005，JPO＆NCIPI

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