公开(公告)号：US20070164743A1

公开(公告)日：2007-07-19

申请号：US11653931

申请日：2007-01-17

申请人： Hiromitsu Takamori

发明人： Hiromitsu Takamori

IPC分类号： G01V3/00

CPC分类号： G01R33/3854

摘要： A magnetic resonance imaging apparatus includes a gantry with a gradient coil which applies a gradient magnetic field to a subject in a static magnetic field, a bed which slides a top board in a longitudinal direction of the top board with the subject placed thereon, a high-frequency coil which applies the gradient magnetic field and a high-frequency pulse signal to the subject, and detects a magnetic resonance signal emitted from the subject, and a damping member which damps noise which occurs when the gradient coil is driven, or a support member which supports the gradient coil, the damping member or the support member providing an asymmetrical structure with respect to a plane perpendicular to the longitudinal direction.

摘要翻译： 磁共振成像装置包括具有梯度线圈的台架，所述梯度线圈在静态磁场中对被检体施加梯度磁场，床在顶板的纵向方向上滑动顶板，其中放置有被检体， 将梯度磁场和高频脉冲信号施加到被检体，检测从被检体发出的磁共振信号的阻尼部件，抑制发生在倾斜线圈被驱动时产生的噪声的阻尼部件，或支撑体 支撑梯度线圈的构件，阻尼构件或支撑构件相对于垂直于纵向方向的平面提供不对称结构。

公开(公告)号：US07589531B2

公开(公告)日：2009-09-15

申请号：US11958776

申请日：2007-12-18

申请人： Masatoshi Yamashita ,  Hiromitsu Takamori

发明人： Masatoshi Yamashita ,  Hiromitsu Takamori

IPC分类号： G01V3/00

CPC分类号： G01R33/3856 ,  G01R33/3873 ,  G01R33/4215

摘要： A gradient magnetic field coil unit includes a main coil layer that has a main coil for generating a gradient magnetic field and is formed in a substantially cylindrical shape. A shield coil layer that is attached to the outside of the main coil layer and has a shield coil for generating a magnetic field which shields a leakage magnetic field from the main coil. A cooling layer is attached between the main coil layer and the shield coil layer and has a plurality of flow paths for refrigerant. The flow paths are arranged in a substantially circumferential shape with the central axis of the main coil layer set to the center thereof, and a plurality of shim tray holding sections which hold a shim tray for a magnetic body.

摘要翻译： 梯度磁场线圈单元包括具有产生梯度磁场的主线圈并形成为大致圆筒形状的主线圈层。 屏蔽线圈层，其附接到主线圈层的外侧，并具有用于产生屏蔽来自主线圈的泄漏磁场的磁场的屏蔽线圈。 在主线圈层和屏蔽线圈层之间安装有冷却层，并且具有用于制冷剂的多个流路。 所述流动路径被布置成基本上圆周形状，其中主线圈层的中心轴线设置在其中心，以及多个垫片托盘保持部分，其保持用于磁性体的垫片托盘。

公开(公告)号：US07663366B2

公开(公告)日：2010-02-16

申请号：US11264373

申请日：2005-11-02

申请人： Hiromitsu Takamori

发明人： Hiromitsu Takamori

IPC分类号： G01V3/00

CPC分类号： G01R33/28 ,  G01R33/34007

摘要： A magnetic resonance imaging apparatus comprising: a magnet configured to form a static magnetic field in an imaging area; a cylindrical structure having a guide; a radio frequency coil configured to receive a nuclear magnetic resonance signal generated by transmitting a radio frequency signal into a object set in the static magnetic field; and a radio frequency coil drive structure configured to adjust a distance between the radio frequency coil and a body surface of the object by using a moving structure configured to move along with the guide, a wire configured to move the moving structure and a motor connected to the wire.

摘要翻译： 一种磁共振成像装置，包括：被配置为在成像区域中形成静磁场的磁体; 具有引导件的圆柱形结构; 射频线圈，被配置为接收通过将射频信号发送到静态磁场中的对象集中而产生的核磁共振信号; 以及射频线圈驱动结构，其被配置为通过使用被构造成与所述引导件一起移动的移动结构来调节所述射频线圈与所述物体的身体表面之间的距离，被配置为使所述移动结构移动的线和连接到 电线。

公开(公告)号：US07567082B2

公开(公告)日：2009-07-28

申请号：US11653931

申请日：2007-01-17

申请人： Hiromitsu Takamori

发明人： Hiromitsu Takamori

IPC分类号： G01V3/00

CPC分类号： G01R33/3854

摘要： A magnetic resonance imaging apparatus includes a gantry with a gradient coil which applies a gradient magnetic field to a subject in a static magnetic field, a bed which slides a top board in a longitudinal direction of the top board with the subject placed thereon, a high-frequency coil which applies the gradient magnetic field and a high-frequency pulse signal to the subject, and detects a magnetic resonance signal emitted from the subject, and a damping member which damps noise which occurs when the gradient coil is driven, or a support member which supports the gradient coil, the damping member or the support member providing an asymmetrical structure with respect to a plane perpendicular to the longitudinal direction.

摘要翻译： 磁共振成像装置包括具有梯度线圈的台架，所述梯度线圈在静态磁场中对被检体施加梯度磁场，床在顶板的纵向方向上滑动顶板，其中放置有被检体， 将梯度磁场和高频脉冲信号施加到被检体，检测从被检体发出的磁共振信号的阻尼部件，抑制发生在倾斜线圈被驱动时产生的噪声的阻尼部件，或支撑体 支撑梯度线圈的构件，阻尼构件或支撑构件相对于垂直于纵向方向的平面提供不对称结构。

公开(公告)号：US20100134109A1

公开(公告)日：2010-06-03

申请号：US12626044

申请日：2009-11-25

申请人： Hiromitsu Takamori

发明人： Hiromitsu Takamori

IPC分类号： G01R33/44

CPC分类号： G01R33/34076 ,  G01R33/34007 ,  G01R33/3403

摘要： A radio frequency coil unit includes a chassis which has a tubiform inner cylinder, a plurality of flanges arranged apart from each other, each of the plurality of flanges provided in a state of protruding outwards from the inner cylinder while in contact with a whole outer circumference surface of the inner cylinder, and a tubiform external cylinder in which each of the plurality of flanges is provided in a state of contacting an inner surface thereof, wherein the chassis forms a flow path of cooling air as a space surrounded by the inner cylinder, the plurality of flanges and the external cylinder, and a radio frequency coil which is mounted on the inner cylinder or the external cylinder to be positioned in the space surrounded by the inner cylinder, the plurality flanges and the external cylinder.

摘要翻译： 射频线圈单元包括：底盘，其具有筒状内筒，多个凸缘彼此分离设置，所述多个凸缘中的每一个凸缘设置成与所述内筒向外突出的状态，同时与整个外周接触 内筒的表面以及与内表面接触的状态下设置有多个凸缘的各个的筒状的外筒，其特征在于，所述底盘形成作为由所述内筒包围的空间的冷却空气的流路， 多个凸缘和外筒，以及安装在内筒或外筒上的射频线圈，以定位在由内筒，多个凸缘和外筒所围绕的空间中。

公开(公告)号：US06954068B1

公开(公告)日：2005-10-11

申请号：US09764214

申请日：2001-01-19

申请人： Hiromitsu Takamori ,  Kazuhiro Iinuma ,  Yasuhiro Uosaki

发明人： Hiromitsu Takamori ,  Kazuhiro Iinuma ,  Yasuhiro Uosaki

IPC分类号： G01R33/385 ,  G01V3/00

CPC分类号： G01R33/3854 ,  G01R33/3856

摘要： The gantry of a magnetic resonance imaging apparatus includes a static magnetic field magnet, a gradient coil, a high-frequency coil, and a sealed vessel housing the gradient coil. The sealed vessel is made of a nonconductive material. Even if a gradient magnetic field is switched at high speed, no eddy current flows in the sealed vessel. Therefore, the sealed vessel does not vibrate.

摘要翻译： 磁共振成像装置的台架包括静态磁场磁体，梯度线圈，高频线圈和容纳梯度线圈的密封容器。 密封容器由非导电材料制成。 即使高速切换梯度磁场，也不会在密封容器内流动涡流。 因此，密封容器不会振动。