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1. 发明专利

JP2014188132A Magnetic resonance imaging system 有权
标题翻译：磁共振成像系统
公开(公告)号：JP2014188132A
公开(公告)日：2014-10-06
申请号：JP2013065509
申请日：2013-03-27
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： KAWAMURA TAKESHI , IMAMURA YUKINOBU , OBARA TAKAYUKI
IPC分类号： A61B5/055 , G01R33/385
CPC分类号： G01R33/385 , G01R33/3875 , G01R33/4215
摘要： PROBLEM TO BE SOLVED: To provide an MRI system including a magnetic field gradient generation unit that can suppress deterioration of tomographic images while reducing a leakage magnetic field, is thinned, and has a minor axis thereof extended for use in a horizontal magnetic field type or has a radial direction dimension thereof reduced for use in a vertical magnetic field type.SOLUTION: A magnetic field gradient generation unit 3 of an MRI system includes at least a pair of conducting rings 5 disposed within an arrangement area outside magnetic field gradient generation sources 3a and 3b in a radial direction of a static magnetic field generation source on the sides of the ends of the magnetic field gradient generation unit 3 in a homogenous magnetic field direction inside the magnetic field gradient generation unit 3. A coil pattern 341b of at least one turn is located in the vicinity of the conducting rings 5 in a radial direction. On a section cut with a plane containing the radial direction and homogenous magnetic field direction (z-axis direction), a dimension in the radial direction of the coil pattern 341b is smaller than that of a coil pattern 342b of turns of the same coil other than the at least one turn, and a dimension in the homogeneous magnetic field direction is larger.
摘要翻译：要解决的问题：为了提供包括能够抑制泄漏磁场的断层图像的劣化的磁场梯度生成单元的MRI系统变薄，并且其短轴延伸用于水平磁场型或其径向尺寸减小，用于垂直磁场型。解决方案：MRI系统的磁场梯度产生单元3包括至少一对导电环5，其设置在磁场梯度产生源3a外部的布置区域内并且在磁场梯度产生单元3内的均匀磁场方向上在磁场梯度产生单元3的端部的侧面上的静态磁场产生源的径向方向上的3b。3b。至少一个线圈图案341b 转向位于导电环5的径向附近。在使用包含径向方向和均匀磁场方向（z轴方向）的平面切割的截面上，线圈图案341b的径向尺寸小于相同线圈的匝数的线圈图案342b的尺寸并且均匀磁场方向上的尺寸较大。

2. 发明专利

JP2013169240A Magnetic resonance imaging apparatus 有权
标题翻译：磁共振成像装置
公开(公告)号：JP2013169240A
公开(公告)日：2013-09-02
申请号：JP2012033151
申请日：2012-02-17
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： IMAMURA YUKINOBU , ABE MITSUJI , YAO TAKESHI , TERADA MASANAO , KAWAMURA TAKESHI
IPC分类号： A61B5/055
摘要： PROBLEM TO BE SOLVED: To provide a magnetic resonance imaging apparatus which can reduce deterioration in images due to eddy current generated by a gradient magnetic field, has a gradient magnetic field coil reduced in thickness and is equipped with a large opening portion.SOLUTION: This imaging apparatus includes: a magnet for generating a static magnetic field 6 on an image pickup region 9 of a subject 7; and a gradient magnetic field coil 11 for generating a magnetic field having gradient strength on the image pickup region 9. An eddy current blocking shield 15 is equipped between the gradient magnetic field coil 11 and the magnet. The imaging apparatus has a structure in which the eddy current blocking shield 15 is divided into two, and the divided parts of the shield are each supported via a position adjusting means.
摘要翻译：要解决的问题：为了提供可以减少由梯度磁场产生的涡流引起的图像劣化的磁共振成像装置，具有减小厚度的梯度磁场线圈并且具有大的开口部分。解决方案：这成像装置包括：用于在被检体7的图像拾取区域9上产生静态磁场6的磁体; 以及用于在摄像区域9上产生具有梯度强度的磁场的梯度磁场线圈11.在倾斜磁场线圈11和磁铁之间配有涡流阻挡屏蔽体15。成像装置具有将涡流阻挡屏蔽体15分割为两部分的结构，并且屏蔽体的分割部分各自经由位置调整装置支撑。

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

JP2012034807A Gradient magnetic field coil and magnetic resonance imaging apparatus 有权
标题翻译：梯度磁场线圈和磁共振成像装置
公开(公告)号：JP2012034807A
公开(公告)日：2012-02-23
申请号：JP2010177085
申请日：2010-08-06
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： TERADA MASANAO , ABE MITSUJI , IMAMURA YUKINOBU , TAKEUCHI HIROYUKI , KUROME AKIRA
IPC分类号： A61B5/055
摘要： PROBLEM TO BE SOLVED: To provide a gradient magnetic field coil configuring wiring patterns without using a loop coil not penetrated by a z-axis.SOLUTION: The gradient magnetic field coil includes: a nearly solenoid-shaped first coil generating a magnetic field distribution linear in the axial direction, in an imaging region of a magnetic resonance imaging apparatus; and a nearly solenoid-shaped second coil disposed outside the first coil and inside a static magnetic field coil device, which generates a static magnetic field having a uniform magnetic field distribution in the imaging region, and suppressing a leakage magnetic field from the first coil to the static magnetic field coil device. In the gradient magnetic field coil, the interval between the first coil and the second coil is different in the circumferential direction and has a first region A1 (θ=0, π) and a second region A2 (θ=π/2) narrower than the first region A1. In the first coil, the wiring patterns 17a, 17b on the side of a zero-plane F0 passing through the center of the first coil and perpendicular to the axial direction (a z-axis direction) meander in the circumferential direction such that the wiring patterns 17a, 17b depart from the zero-plane F0 in the first region A1 and approach the zero-plane F0 in the second region A2.
摘要翻译：要解决的问题：提供一种构成布线图案的梯度磁场线圈，而不使用未被z轴穿过的环形线圈。解决方案：梯度磁场线圈包括：在磁共振成像装置的成像区域中产生在轴向上线性的磁场分布的近似螺线管形的第一线圈; 以及设置在第一线圈外侧和静磁场线圈装置内的近似螺线管状的第二线圈，其产生在摄像区域中具有均匀磁场分布的静磁场，并且抑制来自第一线圈的漏磁场静态磁场线圈装置。在梯度磁场线圈中，第一线圈和第二线圈之间的间隔在圆周方向上不同，并且具有比第一区域A1（θ= 0，π）小的第二区域A2（θ=π/ 2）第一区A1。在第一线圈中，穿过第一线圈的中心并且垂直于轴向（z轴方向）的零平面F0侧的布线图案17a，17b在圆周方向上弯曲，使得布线图案17a，17b离开第一区域A1中的零平面F0并且接近第二区域A2中的零平面F0。版权所有（C）2012，JPO＆INPIT

5. 发明专利

JP2012024451A Gradient magnetic field coil device and magnetic resonance imaging apparatus 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：JP2012024451A
公开(公告)日：2012-02-09
申请号：JP2010167970
申请日：2010-07-27
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： IMAMURA YUKINOBU , ABE MITSUJI , YAO TAKESHI
IPC分类号： A61B5/055 , G01R33/385
CPC分类号： G01R33/385 , G01R33/3806 , G01R33/4215
摘要： PROBLEM TO BE SOLVED: To provide a gradient magnetic field coil device that enlarges gradient magnetic fields without enlarging leakage magnetic field.SOLUTION: The gradient magnetic field coil device includes: spiral-shaped first coils 12a to 12d forming magnetic field distributions, wherein intensity inclines linearly, in a photographing region of a magnetic resonance imaging apparatus; and spiral-shaped second coils 16a to 16d arranged at the opposing side of the photographing region with the first coils 12a to 12d therebetween, and suppressing the leakage magnetic fields produced by the 12a to 12d on their opposing side. Electric current Iflowing through the second coils 16a to 16d is less than the electric current Iflowing through the first coils 12a to 12d (I>I). The number of turns Tof the second coils 16a to 16d is greater than the number of turns Tof the first coils 12a to 12d (T W).
摘要翻译：要解决的问题：提供一种在不扩大漏磁场的情况下放大梯度磁场的梯度磁场线圈装置。梯度磁场线圈装置包括：形成磁场分布的螺旋形第一线圈12a至12d，其中强度在磁共振成像装置的拍摄区域中呈线性倾斜; 以及布置在摄影区域的相对侧的螺旋形的第二线圈16a至16d，其间具有第一线圈12a至12d，并且抑制由相对侧12a至12d产生的泄漏磁场。流过第二线圈16a至16d的电流I S 小于流过第一线圈12a的电流I M SB 到12d（I M > I S ）。第二线圈16a至16d的匝数T S 大于第一线圈的匝数T M 12a〜12d（T M S ）。第二线圈16a至16d的导体宽度W S 比第一线圈12a至12d的导体宽度W M < （W M > W S ）。版权所有（C）2012，JPO＆INPIT

6. 发明专利

JP2012016524A Magnetic resonance imaging apparatus 审中-公开
标题翻译：磁共振成像装置
公开(公告)号：JP2012016524A
公开(公告)日：2012-01-26
申请号：JP2010156900
申请日：2010-07-09
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： KAWAMURA TAKESHI , IMAMURA YUKINOBU , NAKAYAMA TAKESHI
IPC分类号： A61B5/055
摘要： PROBLEM TO BE SOLVED: To provide a magnetic resonance imaging apparatus which permits the deviation of the center of gravity of electric current in a spiral electric conductor 32 to be corrected.SOLUTION: The magnetic resonance imaging apparatus having the spiral electric conductor 32 has slits S, S, and Sprovided along the longitudinal direction in the electric conductor 32 and separating electric current conducting routes L, L, Land Lformed in the electric conductor 32 into multi-sections. Among the separated electric current conducting routes L, L, Land L, those located nearer to the outside of the spiral shape are made wider (wn>w3>w2>w1). The slits S, S, and Sare formed in the locations where the radius rof curvature of the electric conductor 32 is locally reduced in the longitudinal direction of the electric conductor 32.
摘要翻译：要解决的问题：提供一种允许螺旋导电体32中的电流重心偏离被校正的磁共振成像装置。解决方案：具有螺旋导电体32的磁共振成像装置具有狭缝S 1 ，S 2 ，S 3 ，并且分离导电路径L 1 ，L 2 ，L 3 和L n 形成多段。在分离的电流导通路径L 1 中，L 2 ，L 3 和L n ，那些位于更靠近螺旋形状的外部的那些被做得更宽（wn> w3> w2> w1）。狭缝S 1 ，S 2 和S 3 电导体32的长度方向局部地减小电导体32的半径r 0 的位置。（C）2012，JPO＆INPIT

7. 发明专利

JP2007175438A Magnetic resonance imaging device 审中-公开
标题翻译：磁共振成像装置
公开(公告)号：JP2007175438A
公开(公告)日：2007-07-12
申请号：JP2005380394
申请日：2005-12-28
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： IMAMURA YUKINOBU , TERADA MASANAO , YAO TAKESHI
IPC分类号： A61B5/055 , G01R33/385
摘要： PROBLEM TO BE SOLVED: To reduce the thickness of an active shield system gradient magnetic field generating part without deteriorating a gradient magnetic field performance concerning a magnetic resonance imaging device.
SOLUTION: The gradient magnetic coils (51) of the magnetic resonance imaging device, which give a gradient magnetic field to a magnetostatic field, comprise the group of a plurality of main conductors (61) for generating the gradient magnetic field; and shield conductors (62) which are obtained by folding the terminal end of each main conductor (61), wiring it at the opposite side of the gradient magnetic field, and connecting it to the start end of another main conductor (61).
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：减小有源屏蔽系统梯度磁场产生部分的厚度，而不会降低关于磁共振成像装置的梯度磁场性能。解决方案：向静磁场产生梯度磁场的磁共振成像装置的梯度磁线圈（51）包括用于产生梯度磁场的多个主导体（61）的组; 以及通过折叠每个主导体（61）的末端而获得的屏蔽导体（62），在梯度磁场的相对侧布线，并将其连接到另一主导体（61）的起始端。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JP2014039633A Magnetic resonance imaging apparatus 审中-公开
标题翻译：磁共振成像装置
公开(公告)号：JP2014039633A
公开(公告)日：2014-03-06
申请号：JP2012182868
申请日：2012-08-22
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： IMAMURA YUKINOBU , ABE MITSUJI , TERADA MASANAO , KAWAMURA TAKESHI , KUROME AKIRA
IPC分类号： A61B5/055 , G01R33/421
摘要： PROBLEM TO BE SOLVED: To provide a low-noise magnetic resonance imaging apparatus 100.SOLUTION: The magnetic resonance apparatus comprises: a magnet 1 for generating a static magnetic field 6 on an imaging region 9; a gradient magnetic field coil 2 for generating a gradient magnetic field 10 with inclined intensity distribution on the imaging region 9; an exterior cover 13 for covering the magnet 1 and the gradient magnetic field coil 2; a first conductive member 16 provided on the exterior cover 13; and a second conductive member 15 that is provided on the magnet 1 or the exterior cover 13, electrically insulated from the first conductive member 16, and is relatively independently movable, with approximated to the first conductive member. The surface of the first conductive member 16 and the surface of the second conductive member 15 face in parallel with each other. A spacer may be partially provided or a spacer with elasticity lower than that of the exterior cover may be provided between the first conductive member 16 and the second conductive member 15 such that the first conductive member 16 and the second conductive member 15 vibrate mutually independently.
摘要翻译：要解决的问题：提供一种低噪声磁共振成像设备100.解决方案：磁共振设备包括：磁体1，用于在成像区域9上产生静态磁场6; 用于在成像区域9上产生具有倾斜强度分布的梯度磁场10的梯度磁场线圈2; 用于覆盖磁体1和梯度磁场线圈2的外盖13; 设置在外盖13上的第一导电构件16; 以及第二导电构件15，其设置在磁体1或外盖13上，与第一导电构件16电绝缘，并且可相对于第一导电构件相对独立地移动。第一导电构件16的表面和第二导电构件15的表面彼此平行地面对。可以部分地设置间隔件，或者可以在第一导电构件16和第二导电构件15之间设置弹性低于外盖的间隔件，使得第一导电构件16和第二导电构件15相互独立地振动。

9. 发明专利

JP2011072461A Magnetic resonance imaging apparatus 有权
标题翻译：磁共振成像装置
公开(公告)号：JP2011072461A
公开(公告)日：2011-04-14
申请号：JP2009225918
申请日：2009-09-30
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： TERADA MASANAO , ABE MITSUJI , IMAMURA YUKINOBU , TAKEUCHI HIROYUKI , YAO TAKESHI
IPC分类号： A61B5/055 , G01R33/385
摘要： PROBLEM TO BE SOLVED: To prevent solenoidal wiring from intermingling with saddle-like wiring in a z-gradient magnetic field coil if the shape of a cross section perpendicular to a z-axis of a main coil is different from the shape of a cross section of a shield coil in a gradient magnetic field coil, or if the shapes of the cross sections are similar but the interval between the coils in the circumferential direction is irregular.
SOLUTION: A horizontal magnetic field MRI apparatus includes a ring-shaped static magnetic field coil which generates a static magnetic field; a bed device which moves in an opening of the static magnetic field coil; and the gradient magnetic field coil which generates a gradient magnetic field whose magnetic strength is inclined and gradient. The gradient magnetic field coil is disposed in such a way that the interval between the gradient magnetic field main coil and the gradient magnetic field shield coil is irregular in the circumferential direction. The z-gradient magnetic field main coil for generating a gradient magnetic field in the direction of advancement of the bed device (in a z-axis direction) has its current channels on a plane perpendicular to the z-axis, and the current channels are stacked in the z-axis direction to make a solenoidal coil.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：如果垂直于主线圈的z轴的横截面的形状不同于z轴的形状，则防止螺线管布线与z-梯度磁场线圈中的鞍状布线混合梯形磁场线圈中的屏蔽线圈的横截面，或者如果横截面的形状相似，但是圆周方向上的线圈之间的间隔是不规则的。解决方案：水平磁场MRI装置包括产生静磁场的环形静磁场线圈; 在静态磁场线圈的开口中移动的床装置; 和梯度磁场线圈产生磁强度倾斜和梯度的梯度磁场。梯度磁场线圈以这样的方式设置，使得梯度磁场主线圈和梯度磁场屏蔽线圈之间的间隔在圆周方向上不规则。用于在床装置的前进方向（在z轴方向上）产生梯度磁场的z-梯度磁场主线圈在垂直于z轴的平面上具有其电流通道，并且电流通道为在z轴方向上堆叠以形成螺线管线圈。版权所有（C）2011，JPO＆INPIT

10. 发明专利

JP2009172072A Magnetic resonance imaging apparatus 有权
标题翻译：磁共振成像装置
公开(公告)号：JP2009172072A
公开(公告)日：2009-08-06
申请号：JP2008012139
申请日：2008-01-23
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： TERADA MASANAO , ABE MITSUJI , IMAMURA YUKINOBU
IPC分类号： A61B5/055 , G01R33/385
摘要： PROBLEM TO BE SOLVED: To provide a magnetic resonance imaging apparatus which reduces both noises due to vibration of a gradient magnetic field coil and due to a magnetic field leaked from the gradient magnetic field coil.
SOLUTION: The magnetic resonance imaging apparatus includes a static magnetic field coil 1 forming a uniform static magnetic field in the direction z of a central axis within an imaging space 4 and the gradient magnetic field coil 2 forming a gradient magnetic field whose magnetic field component in the direction z of the central axis being inclined in the diameter direction y within the imaging space 4. The gradient magnetic field coil 2 has a main coil 6 for forming a gradient magnetic field and a shield coil 7 for suppressing leakage of a magnetic field. The shield coil 7 has a main shield coil 9 having uneven winding density in the direction z of the central axis C0 for weakening electromagnetic force from the static magnetic field, and a sub-shield coil 8 having a coil pattern overlapping the coil pattern of the main shield coil 9 and having the center 8a whose position shifts in the direction z of the central axis from the position of the center 9a of the main shield coil 9.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种磁共振成像装置，其减少由于梯度磁场线圈的振动引起的两个噪声，并且由于从梯度磁场线圈泄漏的磁场。解决方案：磁共振成像装置包括静电磁场线圈1，其在成像空间4内的中心轴的方向z上形成均匀的静磁场，梯度磁场线圈2形成梯度磁场，其磁性中心轴方向z上的场分量在成像空间4内的直径方向y上倾斜。梯度磁场线圈2具有用于形成梯度磁场的主线圈6和用于抑制泄漏的屏蔽线圈7 磁场。屏蔽线圈7具有主屏蔽线圈9，其在中心轴线C0的方向z上具有不均匀的卷绕密度，用于削弱来自静态磁场的电磁力;以及副屏蔽线圈8，其具有与线圈图案重叠的线圈图案主屏蔽线圈9，并且具有从主屏蔽线圈9的中心9a的位置向中心轴线方向z移动的中心8a。（C）2009，JPO＆INPIT

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