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：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：US07576540B2

公开(公告)日：2009-08-18

申请号：US11844519

申请日：2007-08-24

申请人： Mitsushi Abe ,  Yukinobu Imamura ,  Takeshi Yatsuo

发明人： Mitsushi Abe ,  Yukinobu Imamura ,  Takeshi Yatsuo

IPC分类号： G01V3/00

CPC分类号： G01R33/385 ,  G01R33/4215

摘要： The gradient coil for a magnetic resonance imaging apparatus is adapted to encode information on a spatial position of a subject to be inspected into a nuclear magnetic resonance signal. The gradient coil includes a primary gradient coil and a shielded gradient coil. The primary gradient coil generates a gradient magnetic field in the imaging area. The shielded gradient coil is located on the side opposite to the imaging area relative to the primary gradient coil and cancels the gradient magnetic field generated by the primary magnetic field. The shielded gradient coil has a first area including a central axis perpendicularly extending through the central portion of the imaging area and a second area located on the side of the outer circumference of the first area. The second area is more inclined toward the imaging area than the first area.

摘要翻译： 用于磁共振成像装置的梯度线圈适于将待检查对象的空间位置的信息编码为核磁共振信号。 梯度线圈包括初级梯度线圈和屏蔽梯度线圈。 主梯度线圈在成像区域中产生梯度磁场。 屏蔽梯度线圈相对于主梯度线圈位于与成像区域相对的一侧，并且抵消由一次磁场产生的梯度磁场。 屏蔽梯度线圈具有包括垂直延伸穿过成像区域的中心部分的中心轴线的第一区域和位于第一区域的外圆周侧的第二区域。 第二个区域比第一个区域更倾向于成像区域。

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：US06933722B2

公开(公告)日：2005-08-23

申请号：US10332069

申请日：2001-07-02

申请人： Munetaka Tsuda ,  Hirotaka Takeshima ,  Takeshi Yatsuo

发明人： Munetaka Tsuda ,  Hirotaka Takeshima ,  Takeshi Yatsuo

IPC分类号： G01R33/38 ,  G01R33/385 ,  G01R33/421 ,  G01V3/00

CPC分类号： G01R33/385 ,  G01R33/3806 ,  G01R33/3854 ,  G01R33/3856 ,  G01R33/4215

摘要： To reduce vibration and noise generated in supplying pulsatile current to the gradient magnetic field coil for driving that coil in a MRI apparatus, an active shielded gradient magnetic field coil is used, in which the gradient magnetic field coil is supported by and fixed to the static magnetic field generating magnet. The supporter for supporting this gradient magnetic field coil in non-contact does not prevent the interventional procedure performed by a doctor. Further, an eddy current generated on the surface of the static magnetic field generating magnet near the periphery of the gradient magnetic field coil, when supplying the pulsatile current to the gradient magnetic field coil, can be reduced.

摘要翻译： 为了减少向在MRI装置中驱动线圈的梯度磁场线圈供给脉动电流产生的振动和噪声，使用有源屏蔽梯度磁场线圈，其中梯度磁场线圈被支撑并固定在静态 磁场产生磁铁。 用于支持非接触式梯度磁场线圈的支架不能阻止医生进行的介入手术。 此外，当向梯度磁场线圈供应脉动电流时，在梯度磁场线圈周围附近的静磁场产生磁体的表面上产生的涡流可以减小。

公开(公告)号：US08984684B2

公开(公告)日：2015-03-24

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 ,  G01R33/38 ,  G01R33/381

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开口作为入口的前面板 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，该凹曲面作为入口 孔。

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：US20060279285A1

公开(公告)日：2006-12-14

申请号：US11444309

申请日：2006-06-01

申请人： Hiroshi Morita ,  Ryozo Takeuchi ,  Akira Kurome ,  Takeshi Yatsuo ,  Hirotaka Takeshima

发明人： Hiroshi Morita ,  Ryozo Takeuchi ,  Akira Kurome ,  Takeshi Yatsuo ,  Hirotaka Takeshima

IPC分类号： G01V3/00

CPC分类号： G01R33/3856

摘要： The present invention provides a gradient coil apparatus for magnetic resonance imaging system capable of enhancing electrical insulation performance and cooling performance. A gradient coil apparatus for magnetic resonance imaging system comprising plurality of gradient coils 11a, 11b and 11c for applying a gradient magnetic field to a test object and an internal heat exchanger 14 to be immersed in insulation oil 13 in a container 12. A pump 16 is disposed to circulate coolant between the internal heat exchanger 14 and an external heat exchanger 15 disposed outside of the container 12. This arrangement allows the insulation oil only inside of the container, thereby ensuring a substantial reduction in the amount of insulation oil.

摘要翻译： 本发明提供一种能够提高电气绝缘性能和冷却性能的磁共振成像系统的梯度线圈装置。 一种用于磁共振成像系统的梯度线圈装置，包括用于向测试对象施加梯度磁场的多个梯度线圈11a，11b和11c，以及浸入容器12中的绝缘油13中的内部热交换器14。 泵16设置成在内部热交换器14和设置在容器12外部的外部热交换器15之间循环冷却剂。这种布置允许仅在容器内部的绝缘油，从而确保绝缘油的量显着减少 。

公开(公告)号：US06600318B1

公开(公告)日：2003-07-29

申请号：US09529874

申请日：2000-04-20

申请人： Shigeru Kakugawa ,  Shouji Kitamura ,  Nobuhiro Hara ,  Akiyoshi Komura ,  Noriaki Hino ,  Hajime Kawano ,  Takao Honmei ,  Hirotaka Takeshima ,  Takeshi Yatsuo ,  Hiroshi Tazaki

发明人： Shigeru Kakugawa ,  Shouji Kitamura ,  Nobuhiro Hara ,  Akiyoshi Komura ,  Noriaki Hino ,  Hajime Kawano ,  Takao Honmei ,  Hirotaka Takeshima ,  Takeshi Yatsuo ,  Hiroshi Tazaki

IPC分类号： G01V300

CPC分类号： G01R33/3806

摘要： A magnet device is provided with two static magnetic field generating sources 14a and 14b disposed so as to oppose each other while placing a person to be inspected therebetween, a vessel 15 containing the static magnetic field generating source 14a and a vessel 16 containing the static magnetic field generating source 14b, and the vessels 15 and 16 are disposed at positions asymmetric with respect to the person to be inspected. Thereby, a magnet device and an MRI device using the same which can extend a space above the person to be inspected on a bed while avoiding introduction of a large scale device which causes to increase the manufacturing cost thereof.

摘要翻译： 磁体装置设置有两个静态磁场产生源14a和14b，它们彼此相对设置，同时放置要检查的人，包含静磁场发生源14a的容器15和容纳静磁场的容器16 场发生源14b，容器15和16设置在相对于被检查者不对称的位置。因此，使用该磁体装置和MRI装置的磁体装置和MRI装置可以在 同时避免引入导致增加其制造成本的大规模装置。

公开(公告)号：US09689938B2

公开(公告)日：2017-06-27

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 ,  G01R33/421 ,  G01R33/565

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.