公开(公告)号：US08203342B2

公开(公告)日：2012-06-19

申请号：US12519832

申请日：2007-12-13

申请人： Hisaaki Ochi ,  Yoshihisa Soutome ,  Yoshitaka Bito ,  Takeshi Yatsuo ,  Hiroyuki Takeuchi

发明人： Hisaaki Ochi ,  Yoshihisa Soutome ,  Yoshitaka Bito ,  Takeshi Yatsuo ,  Hiroyuki Takeuchi

IPC分类号： G01V3/00

CPC分类号： G01R33/385 ,  G01R33/34076 ,  G01R33/4215 ,  G01R33/422 ,  G01R33/5659

摘要： A coil unit comprises a gradient coil which is disposed along a static magnetic field generating source, and a radio frequency coil which is disposed along the gradient coil in a test region at a position closer to the center of the test region compared with the gradient coil, and a conductor part which is disposed between the gradient coil and the radio frequency coil, and covers periphery of the radio frequency coil. The radio frequency coil comprises a first loop coil and a second loop coil locating in planes substantially perpendicular to direction of the static magnetic field, a plurality of linear conductors connecting the first loop coil and the second loop coil and substantially parallel to the direction of the static magnetic field, and a plurality of first capacitors disposed in the first loop coil and the second loop coil.

摘要翻译： 线圈单元包括沿着静磁场发生源设置的梯度线圈，以及与梯度线圈相比更靠近测试区域的中心的位置处的测试区域中的沿梯度线圈布置的射频线圈 以及布置在所述倾斜线圈和所述射频线圈之间并且覆盖所述射频线圈的周围的导体部。 射频线圈包括第一环形线圈和位于基本上垂直于静态磁场方向的平面中的第二环形线圈;多个线性导体，其连接第一环形线圈和第二环形线圈，并且基本上平行于 静磁场和设置在第一环形线圈和第二环形线圈中的多个第一电容器。

公开(公告)号：US20110175616A1

公开(公告)日：2011-07-21

申请号：US12519832

申请日：2007-12-13

申请人： Hisaaki Ochi ,  Yoshihisa Soutome ,  Yoshitaka Bito ,  Takeshi Yatsuo ,  Hiroyuki Takeuchi

发明人： Hisaaki Ochi ,  Yoshihisa Soutome ,  Yoshitaka Bito ,  Takeshi Yatsuo ,  Hiroyuki Takeuchi

IPC分类号： G01R33/44

CPC分类号： G01R33/385 ,  G01R33/34076 ,  G01R33/4215 ,  G01R33/422 ,  G01R33/5659

摘要： There is provided a coil unit having a large region of homogeneous sensitivity for the axial direction even with a shortened rung length of birdcage type RF coil.The coil unit comprises a gradient coil which is disposed along a static magnetic field generating source, and a radio frequency coil which is disposed along the gradient coil in a test region at a position closer to the center of the test region compared with the gradient coil, and a conductor part which is disposed between the gradient coil and the radio frequency coil, and covers periphery of the radio frequency coil. The radio frequency coil comprises a first loop coil and a second loop coil locating in planes substantially perpendicular to direction of the static magnetic field, a plurality of linear conductors connecting the first loop coil and the second loop coil and substantially parallel to the direction of the static magnetic field, and a plurality of first capacitors disposed in the first loop coil and the second loop coil. The coil unit further comprises a first connecting part, which electrically connects the radio frequency coil and the conductor part via a second capacitor and comprises an electric power supply circuit disposed in parallel to the second capacitor, and a second connecting part which connects the radio frequency coil and the conductor part via a third capacitor.

摘要翻译： 提供了一种线圈单元，即使在鸟笼型RF线圈的长度较短的情况下也具有轴向均匀的灵敏度大的区域。 线圈单元包括沿着静磁场发生源设置的梯度线圈，以及与梯度线圈相比更靠近测试区域的中心的位置处的测试区域中的沿梯度线圈布置的射频线圈 以及布置在所述倾斜线圈和所述射频线圈之间并且覆盖所述射频线圈的周围的导体部。 射频线圈包括位于基本上垂直于静磁场方向的平面中的第一环形线圈和第二环形线圈，连接第一环形线圈和第二环形线圈并且基本上平行于静态磁场方向的多个线性导体 静磁场和设置在第一环形线圈和第二环形线圈中的多个第一电容器。 线圈单元还包括第一连接部分，其经由第二电容器电连接射频线圈和导体部分，并且包括与第二电容器并联设置的电源电路，以及连接射频 线圈和导体部分经由第三电容器。

公开(公告)号：US09075119B2

公开(公告)日：2015-07-07

申请号：US13391066

申请日：2010-08-26

申请人： Masanao Terada ,  Mitsushi Abe ,  Yukinobu Imamura ,  Hiroyuki Takeuchi ,  Takeshi Yatsuo ,  Akira Kurome

发明人： Masanao Terada ,  Mitsushi Abe ,  Yukinobu Imamura ,  Hiroyuki Takeuchi ,  Takeshi Yatsuo ,  Akira Kurome

IPC分类号： G01R33/385 ,  G01R33/421

CPC分类号： G01R33/385 ,  G01R33/4215

摘要： In the magnetic resonance imaging device, the distance between the first and second coils 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, wiring patterns (17a, 17b) on the side of a zero-plane (F0) passing through the center of the first coil and perpendicular to the axis direction (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). This provides a gradient magnetic field coil capable of configuring wiring patterns without using a loop coil that does not pass through the z-axis.

摘要翻译： 在磁共振成像装置中，第一和第二线圈之间的距离在圆周方向上不同，并且具有第一区域（A1）（＆eta; = 0，＆amp; pgr）和第二区域（A2）（＆Thetas; =＆pgr ; / 2）比第一区域（A1）窄。 在第一线圈中，通过第一线圈的中心并且垂直于轴线方向（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）从第一区域（A1）中的零平面（F0）偏离并接近第二区域（A2）中的零平面（F0）。 这提供了能够配置布线图案而不使用不通过z轴的环形线圈的梯度磁场线圈。

公开(公告)号：US07852083B2

公开(公告)日：2010-12-14

申请号：US12296719

申请日：2007-04-10

申请人： Takeshi Yatsuo ,  Hiroyuki Takeuchi ,  Akira Kurome

发明人： Takeshi Yatsuo ,  Hiroyuki Takeuchi ,  Akira Kurome

IPC分类号： G01V3/00

CPC分类号： G01R33/385 ,  G01R33/3856 ,  G01R33/3858 ,  G01R33/4215 ,  G01R33/422

摘要： An MRI apparatus excellent in magnetic field generation efficiency is provided. According to this invention, a main coil (52) of a gradient magnetic field coil (13) is partially recessed to reduce the total thickness of a radio-frequency coil (11) and a gradient magnetic field coil (13). That is, the main coil (52) is designed in a tubular shape, and the diameter r1 at the center portion of the imaging space is larger than the diameter r2 of the main coil end portion. Accordingly, the RF coil (11) can be disposed to be near to the gradient magnetic field coil (13) side without lowering the magnetic field generation efficiency.

摘要翻译： 提供了磁场产生效率优异的MRI装置。 根据本发明，梯度磁场线圈（13）的主线圈（52）部分地凹入，以减小射频线圈（11）和梯度磁场线圈（13）的总厚度。 也就是说，主线圈（52）被设计成管状，并且成像空间的中心部分处的直径r1大于主线圈端部的直径r2。 因此，RF线圈（11）可以靠近梯度磁场线圈（13）而不降低磁场产生效率。

公开(公告)号：US20120176137A1

公开(公告)日：2012-07-12

申请号：US13391066

申请日：2010-08-26

申请人： Masanao Terada ,  Mitsushi Abe ,  Yukinobu Imamura ,  Hiroyuki Takeuchi ,  Takeshi Yatsuo ,  Akira Kurome

发明人： Masanao Terada ,  Mitsushi Abe ,  Yukinobu Imamura ,  Hiroyuki Takeuchi ,  Takeshi Yatsuo ,  Akira Kurome

IPC分类号： G01R33/381

CPC分类号： G01R33/385 ,  G01R33/4215

摘要： In the magnetic resonance imaging device, the distance between the first and second coils 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, wiring patterns (17a, 17b) on the side of a zero-plane (F0) passing through the center of the first coil and perpendicular to the axis direction (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). This provides a gradient magnetic field coil capable of configuring wiring patterns without using a loop coil that does not pass through the z-axis.

摘要翻译： 在磁共振成像装置中，第一和第二线圈之间的距离在圆周方向上不同，并且具有第一区域（A1）（＆eta; = 0，＆amp; pgr）和第二区域（A2）（＆Thetas; =＆pgr ; / 2）比第一区域（A1）窄。 在第一线圈中，通过第一线圈的中心并且垂直于轴线方向（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）从第一区域（A1）中的零平面（F0）偏离并接近第二区域（A2）中的零平面（F0）。 这提供了能够配置布线图案而不使用不通过z轴的环形线圈的梯度磁场线圈。

公开(公告)号：US20090066332A1

公开(公告)日：2009-03-12

申请号：US12296719

申请日：2007-04-10

申请人： Takeshi Yatsuo ,  Hiroyuki Takeuchi ,  Akira Kurome

发明人： Takeshi Yatsuo ,  Hiroyuki Takeuchi ,  Akira Kurome

IPC分类号： G01R33/385

CPC分类号： G01R33/385 ,  G01R33/3856 ,  G01R33/3858 ,  G01R33/4215 ,  G01R33/422

摘要： An MRI apparatus excellent in magnetic field generation efficiency is provided. According to this invention, a main coil (52) of a gradient magnetic field coil (13) is partially recessed to reduce the total thickness of a radio-frequency coil (11) and a gradient magnetic field coil (13). That is, the main coil (52) is designed in a tubular shape, and the diameter r1 at the center portion of the imaging space is larger than the diameter r2 of the main coil end portion. Accordingly, the RF coil (11) can be disposed to be near to the gradient magnetic field coil (13) side without lowering the magnetic field generation efficiency.

摘要翻译： 提供了磁场产生效率优异的MRI装置。 根据本发明，梯度磁场线圈（13）的主线圈（52）部分地凹入，以减小射频线圈（11）和梯度磁场线圈（13）的总厚度。 也就是说，主线圈（52）被设计成管状，并且成像空间的中心部分处的直径r1大于主线圈端部的直径r2。 因此，RF线圈（11）可以靠近梯度磁场线圈（13）而不降低磁场产生效率。

公开(公告)号：US20130184564A1

公开(公告)日：2013-07-18

申请号：US13811998

申请日：2011-07-14

申请人： Atsushi Ninomiya ,  Masaru Yokoyama ,  Kazuyuki Yanase ,  Manabu Yanagimoto ,  Takeshi Yatsuo ,  Hiroyuki Ohzeki

发明人： Atsushi Ninomiya ,  Masaru Yokoyama ,  Kazuyuki Yanase ,  Manabu Yanagimoto ,  Takeshi Yatsuo ,  Hiroyuki Ohzeki

IPC分类号： A61B5/055

CPC分类号： A61B5/0555 ,  G01R33/3806 ,  G01R33/381

摘要： The magnetic resonance imaging device of the present invention includes a gantry and a bed part comprising a top panel, the gantry comprises a circumferential panel covering outer circumference of a tunnel-shaped static magnetic field space, and a front panel having an opening serving as entrance of a bore for the static magnetic field space, this front panel comprises an arc-shaped outer panel extending from an upper part of the opening serving as entrance of the bore to the ground plane via both sides of the opening, and an inner panel disposed inside the outer panel, a portion connecting the outer panel and the inner panel constitutes a top surface protruding forwardly, and the inner panel is formed in a recessed shape with a concave curved surface extending from the top surface to the opening serving as entrance of the bore.

摘要翻译： 本发明的磁共振成像装置包括台架和包括顶板的床部件，所述台架包括覆盖隧道状静磁场空间的外周的圆周面板和具有作为入口的开口的前面板 的静止磁场空间的孔，该前面板包括弧形外板，其从用作孔的入口的开口的上部延伸通过开口的两侧到达接地面，并且内板被设置 在外板的内部，连接外板和内板的部分构成向前方突出的顶面，内板形成为从顶面延伸到开口的凹曲面，该凹曲面作为 孔。

公开(公告)号：US20140176138A1

公开(公告)日：2014-06-26

申请号：US14239872

申请日：2012-08-10

申请人： Yukinobu Imamura ,  Mitsushi Abe ,  Takeshi Yatsuo ,  Masanao Terada ,  Ryuya Ando ,  Takeshi Kawamura

发明人： Yukinobu Imamura ,  Mitsushi Abe ,  Takeshi Yatsuo ,  Masanao Terada ,  Ryuya Ando ,  Takeshi Kawamura

IPC分类号： G01R33/34

CPC分类号： G01R33/34092 ,  G01R33/34007 ,  G01R33/4215 ,  G01R33/56518 ,  Y10T29/49117

摘要： In a gradient magnetic field coil device including: a plurality of main coils generating in an imaging region of a magnetic field resonance imaging device a magnetic field distribution in which an intensity linearly inclines; and a plurality of shield coils, arranged on an opposite side of the imaging region across the main coils, suppressing residual magnetic field generated by the main coils on the opposite side. The plurality of main coils and the plurality of shield coils are connected in series. The device further includes a plurality of current adjusting devices, connected to the shield coils in parallel, independently adjusting currents flowing through the shield coils, respectively, to enhance symmetry of the residual magnetic field. The gradient magnetic field coil device is provided which can suppress generation of eddy current magnetic field even if there is a relative position deviation between the main coils and shield coils.

摘要翻译： 一种梯度磁场线圈装置，包括：多个主线圈，其在磁场共振成像装置的摄像区域中产生强度呈线性倾斜的磁场分布; 以及多个屏蔽线圈，其布置在主线圈上的成像区域的相对侧上，从而抑制由相反侧的主线圈产生的残余磁场。 多个主线圈和多个屏蔽线圈串联连接。 该装置还包括多个并联的屏蔽线圈的电流调节装置，分别独立地调节流过屏蔽线圈的电流，以增强残余磁场的对称性。 提供了梯度磁场线圈装置，即使在主线圈和屏蔽线圈之间存在相对位置偏差，也可以抑制涡电流磁场的产生。

公开(公告)号：US20060220646A1

公开(公告)日：2006-10-05

申请号：US10554164

申请日：2004-04-22

申请人： Akira Kurome ,  Kenji Sakakibara ,  Hirotaka Takeshima ,  Takeshi Yatsuo ,  Hiroyuki Watanabe ,  Yoshihide Wadayama ,  Hirofumi Motoshiromizu ,  Kunihito Suzuki

发明人： Akira Kurome ,  Kenji Sakakibara ,  Hirotaka Takeshima ,  Takeshi Yatsuo ,  Hiroyuki Watanabe ,  Yoshihide Wadayama ,  Hirofumi Motoshiromizu ,  Kunihito Suzuki

IPC分类号： G01V3/00

CPC分类号： G01R33/3854 ,  G01R33/3856

摘要： An MRI apparatus having a configuration that reduces vibration of a static magnetic field generating source is provided. A closed vessel 2 of the static magnetic field generating source is provided with a rigid structure 4 for preventing transmission of vibration generated from a gradient magnetic field generating part 21 to other members via the closed vessel 2. The rigid structure 4 uses, for example, a connecting part 4 that connects a face 25 on the imaging space side and a face 26 confronting it. The rigidity of the closed vessel is thereby increased, and therefore vibration transmitted from the gradient magnetic field generating part can be reduced. The connecting part can have a through-hole structure, and in such a case, internal space of through-hole can be used for drawing cables.

摘要翻译： 提供了具有减小静磁场产生源的振动的结构的MRI装置。 静态磁场产生源的密闭容器2具有刚性结构4，用于防止从梯形磁场产生部分21产生的振动经由密封容器2传递到其它部件。 刚性结构4使用例如连接成像空间侧的面25和面对面26的连接部4。 因此，密闭容器的刚性增加，因此可以减少从梯度磁场产生部件传递的振动。 连接部件可以具有通孔结构，在这种情况下，可以使用通孔的内部空间来拉制电缆。

公开(公告)号：US06937017B2

公开(公告)日：2005-08-30

申请号：US10468793

申请日：2002-02-27

申请人： Shigeru Kakugawa ,  Yoshihide Wadayama ,  Hirotaka Takeshima ,  Takeshi Yatsuo ,  Kenji Sakakibara

发明人： Shigeru Kakugawa ,  Yoshihide Wadayama ,  Hirotaka Takeshima ,  Takeshi Yatsuo ,  Kenji Sakakibara

IPC分类号： A61B5/055 ,  G01R33/383 ,  G01R33/387 ,  H01F6/00 ,  G01V3/00

CPC分类号： G01R33/383 ,  G01R33/387

摘要： The present invention is intended to provide a magnetic pole, a magnet apparatus, and a magnetic resonance imaging apparatus that the magnetic structure of the magnet apparatus for generating a uniform magnetic field is formed in a lower burst mode, and the profitability is increased, and at the same time, the uniformity of the magnetic field is improved.According to the present invention, the magnetic poles arranged opposite to each other across a measuring space have at least one of a plurality of hollows and a single hollow having a shape continuously changing on the section perpendicular to the direction of the magnetic field formed in the measuring space and particularly in order to make the magnetic field uniform, the arrangement of the plurality of hollows and the shape of the single hollow are adjusted. The magnet apparatus and magnetic resonance imaging apparatus of the present invention are structured as mentioned above.

摘要翻译： 本发明旨在提供一种用于产生均匀磁场的磁铁装置的磁性结构以较低的突发模式形成的磁极，磁体装置和磁共振成像装置，并且获利能力增加， 同时提高了磁场的均匀性。 根据本发明，跨越测量空间彼此相对设置的磁极具有多个中空部和单个中空中的至少一个，其形状在垂直于形成在该磁场的磁场的方向的截面上连续变化 测量空间，特别是为了使磁场均匀，调整多个中空部的布置和单个中空的形状。 本发明的磁铁装置和磁共振成像装置如上所述构成。