专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2005204964A Magnetic resonance imaging apparatus 有权
标题翻译：磁共振成像装置
公开(公告)号：JP2005204964A
公开(公告)日：2005-08-04
申请号：JP2004015232
申请日：2004-01-23
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： TAKESHIMA HIROTAKA , WADAYAMA YOSHIHIDE , YAO TAKESHI , KUROME AKIRA , WATANABE HIROYUKI , MOTOSHIROMIZU HIROBUMI , SUZUKI KUNIHITO
IPC分类号： G01R33/385 , A61B5/055
摘要： PROBLEM TO BE SOLVED: To restrain vibration caused by the drive of an inclined magnetic field coil by a method facilitating the manufacture without impairing the opening performance of a magnet in a vertical magnetic field system open type MRI apparatus.
SOLUTION: In this magnetic resonance imaging apparatus, a coil storing container containing a coil for generating a static magnetic field has a large rigidity, and the inclined magnetic field coil is substantially firmly fixed in the coil storing container.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：通过在垂直磁场系统开放式MRI装置中不损害磁体的开放性能的方法来抑制由倾斜磁场线圈的驱动引起的振动。解决方案：在该磁共振成像装置中，包含用于产生静磁场的线圈的线圈存储容器具有大的刚度，并且倾斜磁场线圈基本上牢固地固定在线圈容纳容器中。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2006034955A Magnetic resonance imaging apparatus 有权
标题翻译：磁共振成像装置
公开(公告)号：JP2006034955A
公开(公告)日：2006-02-09
申请号：JP2005170956
申请日：2005-06-10
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： SUZUKI KUNIHITO , MOTOSHIROMIZU HIROBUMI , TAKAYAMA KUNIHIRO , WADAYAMA YOSHIHIDE , KUROME AKIRA , HOSHINO SHIN
IPC分类号： A61B5/055 , G01R33/38 , G01R33/3815 , G01R33/385 , G01V3/00
CPC分类号： G01R33/3854 , G01R33/3806 , G01R33/3815
摘要： 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
摘要翻译：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

3. 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

4. 发明专利

JP2004173722A Magnetic resonance imaging device 有权
标题翻译：磁共振成像装置
公开(公告)号：JP2004173722A
公开(公告)日：2004-06-24
申请号：JP2002340235
申请日：2002-11-25
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： MOTOSHIROMIZU HIROBUMI , WATANABE HIROYUKI , YAO TAKESHI , KUROME AKIRA
IPC分类号： G01R33/385 , A61B5/055 , G01R33/389
摘要： PROBLEM TO BE SOLVED: To prevent vibration caused by vibration of a gradient magnetic field coils from deteriorating an MR image in an MRI device. SOLUTION: The MRI device has ring-shaped generation sources 1a, 1b for electrostatic magnetic field which are arranged to face each other in the vertical direction, and the gradient magnetic field coils 6a, 6b and high-frequency coils 8a, 8b which are arranged on the inner diameter side of these generation sources 1a, 1b for the electrostatic magnetic field and disposed to face each other in the vertical direction. The generation sources 1a, 1b for the electrostatic magnetic field, the gradient magnetic field coils 6a, 6b, and the high-frequency coils 8a, 8b are held with a pair of magnetic plates 3a, 3b. The magnetic plates 3a, 3b are connected with each other by a columnar yoke 4. The gradient magnetic field coils 6a, 6b have base plates 11a, 11b which are vibration suppressing means. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了防止梯度磁场线圈的振动引起的振动恶化MRI装置中的MR图像。解决方案：MRI装置具有在垂直方向上彼此相对配置的静电磁场的环形发生源1a，1b，倾斜磁场线圈6a，6b和高频线圈8a，8b 它们布置在这些用于静电磁场的发生源1a，1b的内径侧上，并且在垂直方向上彼此面对。用于静电磁场的产生源1a，1b，梯度磁场线圈6a，6b和高频线圈8a，8b用一对磁性板3a，3b保持。磁性板3a，3b通过柱状磁轭4彼此连接。梯度磁场线圈6a，6b具有作为振动抑制装置的基板11a，11b。版权所有（C）2004，JPO

5. 发明专利

JP2006305146A Magnetic resonance imaging apparatus 有权
标题翻译：磁共振成像装置
公开(公告)号：JP2006305146A
公开(公告)日：2006-11-09
申请号：JP2005132744
申请日：2005-04-28
申请人： Hitachi Eng Co Ltd , Hitachi Ltd , 日立エンジニアリング株式会社 , 株式会社日立製作所
发明人： SUZUKI KUNIHITO , MOTOSHIROMIZU HIROBUMI , INOUE SEIJI
IPC分类号： A61B5/055 , G01R33/3815
摘要： 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
摘要翻译：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

6. 发明专利

JP2014151151A Gradient magnetic field coil device and magnetic resonance imaging device 审中-公开
标题翻译：梯度磁场线圈和磁共振成像装置
公开(公告)号：JP2014151151A
公开(公告)日：2014-08-25
申请号：JP2013026371
申请日：2013-02-14
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： IMAMURA YUKINOBU , MOTOSHIROMIZU HIROBUMI , KUROME AKIRA
IPC分类号： A61B5/055 , G01R33/385
摘要： PROBLEM TO BE SOLVED: To provide a gradient magnetic field coil device which can reduce noise without narrowing a space into which a subject is inserted for photographing.SOLUTION: A gradient magnetic field coil device has a gradient magnetic field coil 3 which generates a gradient magnetic field 13 in which magnetic field intensity is gradient, a flange and a closed loop 4. An internal wall of the closed loop 4 pressure-contacts with the external periphery of the gradient magnetic field coil over the whole periphery substantially. The gradient magnetic field coil 3 has a substantially-cylindrical shape, and the closed loop 4 has a substantially-flat plate shape, and is fixed to the substantially-cylindrical end of the gradient magnetic field coil 3. In the gradient magnetic field coil 3, a thickness at an end is thinner than a thickness at a center, and the closed loop 4 is fixed to the end of the gradient magnetic field coil 3. The gradient magnetic field coil 3 has a main coil for generating the gradient magnetic field 13 and a leakage magnetic field, and a shield coil for suppressing the leakage magnetic field. The closed loop 4 is fit to the gradient magnetic field coil 3, and fixed thereto.
摘要翻译：要解决的问题：提供一种梯度磁场线圈装置，其可以降低噪声而不会使被摄体插入其中的空间变窄以进行拍摄。解决方案：梯度磁场线圈装置具有梯度磁场线圈3，其产生梯度磁磁场强度为梯度的场13，法兰和闭环4.闭环4的内壁基本上与整个外围的梯度磁场线圈的外围压接。梯度磁场线圈3具有大致圆筒形状，闭环4具有基本上平板形状，并且固定到梯度磁场线圈3的大致圆柱形的端部。在梯度磁场线圈3中，端部的厚度比中心处的厚度薄，闭环4固定在倾斜磁场线圈3的端部。梯度磁场线圈3具有用于产生梯度磁场13的主线圈和泄漏磁场，以及用于抑制漏磁场的屏蔽线圈。闭环4与倾斜磁场线圈3配合，固定于该梯形磁场线圈3。

7. 发明专利

JP2009261747A Magnetic resonance imaging apparatus 审中-公开
标题翻译：磁共振成像装置
公开(公告)号：JP2009261747A
公开(公告)日：2009-11-12
申请号：JP2008116575
申请日：2008-04-28
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： MOTOSHIROMIZU HIROBUMI , SAKURAGI SHICHIHEI
IPC分类号： A61B5/055 , G01R33/30
摘要： PROBLEM TO BE SOLVED: To reduce noise in imaging without enlarging a magnetic resonance imaging apparatus and especially without narrowing an imaging space gap.
SOLUTION: A piezoelectric element is attached to at least either of an exterior cover and an exterior cover attachment member, and an electric circuit for converting a current generated from the piezoelectric element by the vibration of the exterior cover into heat by resistance so as to convert the vibrational energy from an electric energy to a heat energy, attenuate the vibration of the exterior cover and reduce the noise generated from the exterior cover.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了降低成像中的噪声而不扩大磁共振成像装置，特别是不缩小成像间隙。解决方案：压电元件附接到外盖和外盖附接构件中的至少一个，以及用于通过外盖的振动将由压电元件产生的电流转换成热的电路，用于将电压转换成电阻为了将来自电能的振动能量转换成热能，衰减外盖的振动并减小从外盖产生的噪音。版权所有（C）2010，JPO＆INPIT

8. 发明专利

JP2007190318A Magnetic resonance imaging apparatus 审中-公开
标题翻译：磁共振成像装置
公开(公告)号：JP2007190318A
公开(公告)日：2007-08-02
申请号：JP2006013633
申请日：2006-01-23
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： YAO TAKESHI , MOTOSHIROMIZU HIROBUMI
IPC分类号： A61B5/055 , G01R33/28 , G01R33/385
摘要： PROBLEM TO BE SOLVED: To provide a magnetic resonance imaging apparatus capable of attenuating a vibration without significantly degrading the rigidity of a structure, thereby suppressing the occurrence of noise.
SOLUTION: A main coil 9m and a shield coil 9s are mutually arranged at distance of about 50mm-70mm. A sealed bag 24 with powder/particles 25 put therein is arranged between the main coil 9m and the shield coil 9s. When air is discharged from a vacuum chamber 22, the air of the sealed bag 24 is also discharged, so that the powder/particles 25 are compressed. Then, a mold resin is poured into a mold in the chamber 22 and hardened. Accordingly, a gradient magnetic field coil structural body is formed, which includes the compressed powder/particles 25 inside. The compressed powder/particles 25 show a vibration attenuating effect and have the larger rigidity compared with that of the powder before compression. Consequently, the vibration is attenuated so as to suppress the generation of the noise without deteriorating the large rigidity of the structural body.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供能够衰减振动而不显着降低结构刚度的磁共振成像装置，从而抑制噪声的发生。解决方案：主线圈9m和屏蔽线圈9s以约50mm-70mm的距离相互排列。在主线圈9m和屏蔽线圈9s之间配置有放置有粉末/粒子25的密封袋24。当空气从真空室22排出时，密封袋24的空气也被排放，使得粉末/颗粒25被压缩。然后，将模制树脂倒入室22中的模具中并硬化。因此，形成梯度磁场线圈结构体，其包括内部的压缩粉末/颗粒25。与压缩前的粉末相比，压缩粉末/粒子25显示出振动衰减效果，并具有较大的刚度。因此，振动衰减，以抑制噪声的产生，而不会降低结构体的大刚性。版权所有（C）2007，JPO＆INPIT

9. 发明专利

JP2014087510A Magnetic resonance imaging apparatus 审中-公开
标题翻译：磁共振成像装置
公开(公告)号：JP2014087510A
公开(公告)日：2014-05-15
申请号：JP2012239722
申请日：2012-10-31
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： MOTOSHIROMIZU HIROBUMI , SAITO MASARU
IPC分类号： A61B5/055
摘要： PROBLEM TO BE SOLVED: To provide an MRI apparatus 1 reduced in noise without its enlargement.SOLUTION: A magnetic resonance imaging apparatus comprises: a magnetostatic field magnet 2 that generates a magnetostatic field in an image capturing space 8; a gradient magnetic field coil 4 that generates a gradient magnetic field in the image capturing space 8; an exterior cover 5 that is arranged so as to cover the magnetostatic field magnet 2 and the gradient magnetic field coil 4; and a gas bag 6 that is arranged on the side of the image capturing space 8 of the gradient magnetic field coil 4 within the exterior cover 5 and contains gas 6c having different acoustic impedance from surrounding air. The gas bag 6 deforms according to an amount of sealed gas 6c. Pressure in the gas bag 6 is approximately equal to that of the surrounding air. The acoustic impedance of the sealed gas 6c in the gas bag 6 is smaller than that of the surrounding air of the gas bag 6. The gas bag 6 is distant from the gradient magnetic field coil 4 and the exterior cover 5.
摘要翻译：要解决的问题：提供一种降低噪声而不扩大的MRI装置1.解决方案：磁共振成像装置包括：静磁场磁体2，其在图像捕获空间8中产生静磁场; 在图像捕获空间8中产生梯度磁场的梯度磁场线圈4; 布置成覆盖静磁场磁体2和梯度磁场线圈4的外盖5; 以及气体袋6，其设置在外罩5内的倾斜磁场线圈4的图像捕获空间8的一侧，并且包含具有与周围空气不同的声阻抗的气体6c。气囊6根据密封气体6c的量而变形。气囊6中的压力大致等于周围空气的压力。气囊6中的密封气体6c的声阻抗小于气囊6的周围空气的声阻抗。气囊6远离梯度磁场线圈4和外盖5。

10. 发明专利

JP2008212504A Magnetic resonance imaging apparatus 有权
标题翻译：磁共振成像装置
公开(公告)号：JP2008212504A
公开(公告)日：2008-09-18
申请号：JP2007056533
申请日：2007-03-07
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： MOTOSHIROMIZU HIROBUMI , SAKURAGI SHICHIHEI
IPC分类号： A61B5/055 , G01R33/28 , G01R33/385
摘要： PROBLEM TO BE SOLVED: To reduce noise due to vibration of a gradient magnetic field coil without narrowing an imaging space gap or enlarging (enlarging in the height direction) an MRI apparatus.
SOLUTION: This magnetic resonance imaging apparatus includes a static magnetic field generator for generating a static magnetic field in the perpendicular direction to the imaging space 1, the gradient magnetic field coil 6 for generating a gradient magnetic field in the static magnetic field, and an RF coil 7 transmitting a high-frequency magnetic field for generating a nuclear magnetic resonance phenomenon; and further includes a recess part provided in the imaging space side of the static magnetic field generator, the gradient magnetic field coil 6 disposed in the recess part, and a disk-shaped RF base 9 for supporting the RF coil, wherein the gradient magnetic field 6 is disposed in the recess part surrounded with the side faces and the base of the recess part, and the RF base.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了降低由于梯度磁场线圈的振动引起的噪声，而不会使成像空间间隙变窄或放大（在高度方向上放大）MRI装置。解决方案：该磁共振成像装置包括用于在与成像空间1垂直的方向上产生静磁场的静磁场发生器，用于在静磁场中产生梯度磁场的梯度磁场线圈6，以及发射用于产生核磁共振现象的高频磁场的RF线圈7; 并且还包括设置在静磁场发生器的成像空间侧的凹部，设置在凹部中的倾斜磁场线圈6和用于支撑RF线圈的盘状RF基座9，其中梯度磁场 6设置在由凹部的侧面和基部以及RF基部包围的凹部中。版权所有（C）2008，JPO＆INPIT

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式