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    • 3. 发明专利
    • Magnetic resonance imaging apparatus
    • 磁共振成像装置
    • JP2008125935A
    • 2008-06-05
    • JP2006316574
    • 2006-11-24
    • Hitachi Ltd株式会社日立製作所
    • SUZUKI KUNIHITOSUZUKI HIROYUKIMOTOSHIROMIZU HIROBUMI
    • A61B5/055G01R33/3815H01F5/00H01F6/00
    • PROBLEM TO BE SOLVED: To provide a magnetic resonance imaging apparatus non-transmitting vibrations of a gradient magnetic field coil to superconducting coils during operation and supporting the superconducting coils to withstand shock in a transportation during the transportation. SOLUTION: This magnetic resonance imaging apparatus is provided with superconducting coils 6a and 6b applying a prescribed current to generate a static magnetic field in an examination area 9, a coil case 8 supporting the superconducting coils 6a and 6b and storing the superconducting coils 6a and 6b with refrigerant 22, and a vacuum vessel 5 surrounding the coil case 8 and retaining its inside vacuum; and is further provided with a first heat insulation support section 16 capable of insulatingly supporting the coil case 8, and a penetration support section 11 fixable to the first heat insulation support section 16 inside the vacuum vessel 5 and penetrating through the vacuum vessel 5; and the penetration support section 11 and the vacuum vessel 5 are formed joinably outside the vacuum vessel 5. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了在运行期间向超导线圈提供梯度磁场线圈的非传递振动的磁共振成像装置,并且支撑超导线圈以在运输期间承受运输中的冲击。 解决方案:该磁共振成像装置设有施加预定电流以在检查区域9中产生静磁场的超导线圈6a和6b,支撑超导线圈6a和6b的线圈壳体8并且存储超导线圈 6a和6b与制冷剂22,以及真空容器5,围绕线圈壳8并保持其内部真空; 并且还设置有能够绝缘地支撑线圈壳体8的第一绝热支撑部分16和固定到真空容器5内的第一绝热支撑部分16并穿透真空容器5的穿透支撑部分11; 并且穿透支撑部11和真空容器5在真空容器5的外侧连接成形。(C)2008,JPO&INPIT
    • 4. 发明专利
    • Magnetic resonance imaging apparatus
    • 磁共振成像装置
    • JP2007222431A
    • 2007-09-06
    • JP2006047645
    • 2006-02-24
    • Hitachi Ltd株式会社日立製作所
    • MOTOSHIROMIZU HIROBUMISUZUKI KUNIHITO
    • A61B5/055G01R33/38G01R33/3815H01F7/20
    • G01R33/3806G01R33/3802G01R33/3804G01R33/3815G01R33/3854G01R33/56509
    • PROBLEM TO BE SOLVED: To provide a simply structured magnetic resonance imaging (MRI) apparatus which allows stable installation that effectively prevents the generation of locking and also effectively prevents generation of vibrations on the bottom face of the apparatus when necessary.
      SOLUTION: The magnetic resonance imaging apparatus has a pair of superconductive coils 2, as a static magnetic field generator, arranged in vertically opposing relation while sandwiching an imaging space 1. When installing the magnetic resonance imaging apparatus, a plurality of support legs 25, which deform elastically with a predetermined spring constant in the load supporting direction, are arranged in a predetermined arrangement between the apparatus and the installation floor surface F.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种简单结构化的磁共振成像(MRI)装置,其允许稳定的安装,其有效地防止产生锁定,并且还在有必要时有效地防止在装置底面产生振动。 解决方案:磁共振成像装置具有一对作为静磁场发生器的超导线圈2,它们以垂直相对的关系布置,同时夹着成像空间1.当安装磁共振成像装置时,多个支撑腿 在装置和安装地板表面F之间以预定的布置布置弹性地沿着负载支撑方向以预定的弹簧常数变形的弹簧25。(C)2007,JPO&INPIT
    • 5. 发明专利
    • Magnetic resonance imaging apparatus
    • 磁共振成像装置
    • JP2006305033A
    • 2006-11-09
    • JP2005130711
    • 2005-04-28
    • Hitachi Eng Co LtdHitachi Kyowa Engineering Co LtdHitachi Ltd日立エンジニアリング株式会社日立協和エンジニアリング株式会社株式会社日立製作所
    • SUZUKI KUNIHITOYOKOYAMA JUNTAKAYAMA KUNIHIRO
    • A61B5/055G01R33/3815
    • PROBLEM TO BE SOLVED: To suppress the propagation of a vibration of a vacuum container due to the external excitation to a superconducting coil and to maintain the strength to resist the impact load at the time of the transportation or the like. SOLUTION: An MRI apparatus is equipped with the superconducting coil, a coil container to accommodate the superconducting coil, a heat shield to cover the coil container and a vacuum container to accommodate the coil container and the heat shield, wherein the coil container includes an upper coil container, a lower coil container and a coil container connecting section, the vacuum container includes an upper vacuum container and a lower vacuum container, the coil container is supported by the lower vacuum container and is disengaged from the upper vacuum container, and a temporary fastening mechanism to temporarily fasten the vacuum container and the heat shield is disposed. The propagation of the vibration of the vacuum container due to the external excitation such as the vibration of a gradient magnetic coil or the like to the superconducting coil can be suppressed. Also, the strength to resist the impact load at the time of the transportation or the like can be maintained. COPYRIGHT: (C)2007,JPO&INPIT
    • 解决的问题:为了抑制真空容器由于外部激励而向超导线圈的振动的传播,并且在运输等时保持抵抗冲击载荷的强度。 解决方案:MRI装置配备有超导线圈,容纳超导线圈的线圈容器,覆盖线圈容器的隔热罩和用于容纳线圈容器和隔热罩的真空容器,其中线圈容器 包括上线圈容器,下线圈容器和线圈容器连接部分,真空容器包括上真空容器和下真空容器,线圈容器由下真空容器支撑并与上真空容器脱开, 以及暂时固定真空容器和隔热罩的临时固定机构。 可以抑制由于诸如梯度电磁线圈等的振动的外部激励而将真空容器的振动传播到超导线圈。 此外,可以保持抵抗运输时等的冲击负荷的强度。 版权所有(C)2007,JPO&INPIT
    • 6. 发明专利
    • Magnetic resonance imaging apparatus
    • 磁共振成像装置
    • JP2005304597A
    • 2005-11-04
    • JP2004122723
    • 2004-04-19
    • Hitachi Eng Co LtdHitachi LtdHitachi 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
    • SAKAKIBARA KENJISUZUKI KUNIHITOWATANABE HIROYUKITAKESHIMA HIROTAKA
    • G01R33/3815A61B5/055G01R33/385
    • G01R33/3856
    • PROBLEM TO BE SOLVED: To provide an MRI apparatus which has a homogeneous static magnetic field with an increase in openness and is equipped with a static magnetic field generating device which hardly vibrates.
      SOLUTION: A gradient magnetic field generating part is disposed in a depressed part on a surface (a facing surface) on the side of an imaging region on a pair of vessels of superconducting magnets placed to oppose mutually in a manner the imaging region is located between the vessels. A through-hole penetrating from the facing surface of the vessel of the superconducting magnet to the surface (an opposite surface) of the other side is provided, and a reinforcing member for increasing rigidity is fixed on the opposite surface. Since the gradient magnetic field generating part is disposed in the depressed part, and a current supply cable is pulled in from the through-hole, the openness of an imaging space is improved. Since inner walls of the through-hole works as a support post, increased rigidity of the opposite surface results in improved rigidity of the facing surface. Consequently, the vibrations transmitted from the gradient magnetic field generating part are suppressed.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 解决问题:提供具有均匀的静态磁场并增加开放性的MRI装置,并且配备有几乎不振动的静磁场产生装置。 解决方案:梯度磁场产生部件设置在超导磁体的一对容器上的成像区域侧的表面(相对表面)上的凹陷部分中,该超导磁体以相对于成像区域 位于血管之间。 提供了从超导磁体的容器的相对表面穿透到另一侧的表面(相对表面)的通孔,并且用于增加刚性的加强构件固定在相对的表面上。 由于倾斜磁场产生部分设置在凹陷部分中,并且电流供应电缆从通孔拉入,因此提高了成像空间的开放度。 由于通孔的内壁作为支撑柱,相反表面的刚性增加导致相对表面的刚性提高。 因此,抑制了从梯度磁场产生部发送的振动。 版权所有(C)2006,JPO&NCIPI
    • 7. 发明专利
    • Superconducting magnet device
    • 超级磁铁设备
    • JP2005168809A
    • 2005-06-30
    • JP2003413175
    • 2003-12-11
    • Hitachi Eng Co LtdHitachi LtdHitachi 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
    • ANDO TATSUYAABE MITSUJIWATANABE HIROYUKISUZUKI KUNIHITOTAKAHASHI MASANORIWADAYAMA YOSHIHIDEYAO TAKESHITAKEUCHI HIROYUKI
    • G01R33/3815A61B5/055G01R33/3873H01F6/00H01L39/04
    • 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
    • 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
    • 8. 发明专利
    • Magnetic resonance imaging apparatus
    • 磁共振成像装置
    • JP2006305146A
    • 2006-11-09
    • JP2005132744
    • 2005-04-28
    • Hitachi Eng Co LtdHitachi Ltd日立エンジニアリング株式会社株式会社日立製作所
    • SUZUKI KUNIHITOMOTOSHIROMIZU HIROBUMIINOUE SEIJI
    • A61B5/055G01R33/3815
    • PROBLEM TO BE SOLVED: To reduce the bearing load of a heat shield of a magnetic resonance imaging apparatus (hereafter, an MRI apparatus).
      SOLUTION: The MRI apparatus is comprised of coil containers 21 and 22 which accommodate annular superconducting coils 11 and 12 to generate a static magnetic field together with refrigerants, the heat shields 31 and 32 which are disposed to surround the coil containers, vacuum containers 41 and 42 which are disposed to surround the heat shield and keep the insides vacuum, connection pipes 61 and 62 which support the vacuum containers to be vertically opposed to each other with a space and connect the vacuum containers to each other, and magnetic field adjustors 83 and 84 which are disposed in the upper and lower vacuum containers, wherein the bearing loads of the heat shields are reduced by directly supporting the magnetic adjustors on upper walls or lower walls of the individual vacuum containers through supporting members 81 and 82.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:减小磁共振成像装置(以下称为MRI装置)的隔热罩的轴承负荷。 解决方案:MRI装置包括容纳环形超导线圈11和12的线圈容器21和22,以与制冷剂一起产生静态磁场,设置成围绕线圈容器的隔热罩31和32,真空 集装箱41和42,其被设置成围绕隔热罩并保持内部真空,支撑真空容器的连接管61和62彼此垂直相对并且将真空容器彼此连接,并且磁场 设置在上下真空容器中的调节器83和84,其中通过支撑构件81和82将各个真空容器的上壁或下壁直接支撑在磁性调节器上,减轻了隔热罩的轴承负荷。 P>版权所有(C)2007,JPO&INPIT
    • 9. 发明专利
    • Magnetic resonance imaging apparatus
    • 磁共振成像装置
    • JP2006034955A
    • 2006-02-09
    • JP2005170956
    • 2005-06-10
    • Hitachi Eng Co LtdHitachi LtdHitachi 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
    • SUZUKI KUNIHITOMOTOSHIROMIZU HIROBUMITAKAYAMA KUNIHIROWADAYAMA YOSHIHIDEKUROME AKIRAHOSHINO SHIN
    • A61B5/055G01R33/38G01R33/3815G01R33/385G01V3/00
    • G01R33/3854G01R33/3806G01R33/3815
    • PROBLEM TO BE SOLVED: To provide an MRI apparatus in which suppression of variation in static magnetic field and noise caused by vibration of a gradient magnetic field coil can be realized.
      SOLUTION: In the MRI apparatus of the present invention, reinforcing members are firmly provided so as to enhance the rigidity strength of two connecting tubes connecting upper and lower cryostats, thereby suppression of vibration caused by the gradient magnetic field coil and suppression of variation of static magnetic field can be realized. Further, in the MRI apparatus of the present invention, the reinforcing members are provided in upper and lower portions of the connecting tubes of vacuum vessels, thereby suppression of vibration caused by the gradient magnetic field coil and suppression of variation of static magnetic field can be realized. Further, in the MRI apparatus of the present invention, the reinforcing members are provided in upper and lower parts of the vacuum vessels, thereby suppression of vibration caused by the gradient magnetic field coil and suppression of variation of static magnetic field can be realized.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 解决的问题:提供一种可以实现抑制由梯度磁场线圈的振动引起的静态磁场和噪声的变化的MRI装置。 解决方案:在本发明的MRI装置中,加强构件被牢固地设置,以提高连接上下低温恒温器的两个连接管的刚度强度,从而抑制由梯度磁场线圈引起的振动和抑制 可以实现静磁场的变化。 此外,在本发明的MRI装置中,在真空容器的连接管的上部和下部设置加强构件,由此抑制由梯度磁场线圈引起的振动和抑制静磁场的变化 实现。 此外,在本发明的MRI装置中,在真空容器的上部和下部设置加强构件,从而可以实现由倾斜磁场线圈引起的振动的抑制和静磁场的变化的抑制。 版权所有(C)2006,JPO&NCIPI
    • 10. 发明专利
    • Magnetic resonance imaging apparatus
    • 磁共振成像装置
    • JP2005137530A
    • 2005-06-02
    • JP2003376367
    • 2003-11-06
    • Hitachi Ltd株式会社日立製作所
    • MOTOSHIROMIZU HIROBUMISUZUKI KUNIHITOWATANABE HIROYUKI
    • A61B5/055G01R33/3815G01R33/385
    • G01R33/3815G01R33/3854
    • PROBLEM TO BE SOLVED: To prevent degradation in an MR image in an MRI apparatus which generates a static magnetic field in a vertical direction.
      SOLUTION: The MRI apparatus 20 is disposed with annular superconducting coils 2a and 2b facing each other in the vertical direction. The superconducting coils are accommodated in annular cooling containers 5a and 5b. The cooling containers are accommodated in radiation shield plates 7a and 7b. The radiation shield plates are accommodated in vacuum containers 3a and 3b. Each of the containers is connected to the counterpart by at least two places. Supporting members 9a and 9b are disposed between outer wall surfaces of the lower cooling containers and inner wall surfaces of the lower vacuum containers to support the lower cooling containers from the side of the lower vacuum containers. The upper cooling containers are free besides in potions of connection pipes 6 to connect to the lower cooling containers.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:为了防止在垂直方向上产生静磁场的MRI装置中的MR图像的劣化。 解决方案:MRI装置20设置有在垂直方向上彼此面对的环形超导线圈2a和2b。 超导线圈容纳在环形冷却容器5a和5b中。 冷却容器容纳在辐射屏蔽板7a和7b中。 辐射屏蔽板容纳在真空容器3a和3b中。 每个容器至少与两个位置相连。 支撑构件9a和9b设置在下冷却容器的外壁表面和下真空容器的内壁表面之间,以从下真空容器的侧面支撑下冷却容器。 上部冷却容器除了连接到下部冷却容器的连接管6之外是自由的。 版权所有(C)2005,JPO&NCIPI