公开(公告)号：US6037773A

公开(公告)日：2000-03-14

申请号：US889330

申请日：1997-07-08

申请人： Hirotsugu Mitsumata ,  Hiroshi Inoue ,  Masato Okazaki ,  Masami Sugie

发明人： Hirotsugu Mitsumata ,  Hiroshi Inoue ,  Masato Okazaki ,  Masami Sugie

IPC分类号： G01R33/32 ,  A61B5/055 ,  G01R33/34 ,  G01V3/00

CPC分类号： G01R33/34084 ,  G01R33/34046

摘要： A magnetic resonance imaging apparatus has a gantry including various coils such as a static field coil and gradient field coils, a top board for supporting an examinee and moving the examinee into and out of an opening of the gantry, and an approximately cylindrical RF coil defining a hollow space therein. The RF coil is set to the top board, with an axis of the hollow space extending at an angle to the horizontal. The examinee's imaging site is inserted into the hollow space of the RF coil to have sectional images picked up. Since the RF coil is set to the top board with the axis of the hollow space inclined relative to the horizontal, sectional images may be picked up by using the approximately cylindrical RF coil while allowing the examinee to take a comfortable posture without enlarging the RF coil.

摘要翻译： 磁共振成像装置具有包括诸如静态场线圈和梯度场线圈的各种线圈的龙门架，用于支撑受检者并将受检者移入和移出台架的开口的顶板以及限定 其中的空心空间。 RF线圈被设置在顶板上，中空空间的轴线以与水平面成一定角度延伸。 将受检者的成像部位插入到RF线圈的中空空间中，以获得截面图像。 由于RF线圈被设置为顶板，空心轴的轴线相对于水平方向倾斜，所以可以通过使用近似圆柱形的RF线圈来拾取截面图像，同时允许受试者采取舒适的姿势而不放大RF线圈 。

公开(公告)号：US5398686A

公开(公告)日：1995-03-21

申请号：US082948

申请日：1993-06-29

申请人： Hiroshi Inoue ,  Hirotsugu Mitsumata ,  Masami Sugie ,  Osamu Sekiguchi

发明人： Hiroshi Inoue ,  Hirotsugu Mitsumata ,  Masami Sugie ,  Osamu Sekiguchi

IPC分类号： A61B5/055 ,  G01R33/28

CPC分类号： G01R33/28 ,  A61B5/0555

摘要： A gantry defines an opening, and a surface coil is mounted in a predetermined position inside the opening. In tomography using this MRI apparatus, an examinee supported on a top board is moved into the opening. At this time, the top board is movable without being obstructed by the surface coil. The surface coil receives NMR signals from a photographed site lying directly over the surface coil. Sectional images are prepared based on the NMR signals received. When shifting the site to be photographed, the operator in a scanner control room gives an instruction to move the top board, thereby adjusting a photographing position. It is unnecessary for the examinee to move on the top board, or for the operator to move from the scanner control room to the photographing room. The examinee entering the gantry opening is illuminated by light from a light projector. A position of the top board when the light illuminates the site to be photographed is regarded as a starting point. The top board is moved from the starting point by a distance between the light projector and surface coil. This achieves an accurate positional adjustment between the site to be photographed and the surface coil.

摘要翻译： 台架限定开口，并且表面线圈安装在开口内的预定位置。 在使用该MRI装置的断层摄影中，将支撑在顶板上的受检者移动到开口中。 此时，顶板可移动而不受表面线圈的阻碍。 表面线圈从直接位于表面线圈上方的拍摄部位接收NMR信号。 基于收到的NMR信号制备截面图像。 当移动要拍摄的场所时，扫描仪控制室中的操作者给出移动顶板的指令，从而调整拍摄位置。 受试者无需在顶板上移动，或者让操作者从扫描仪控制室移动到拍摄室。 进入龙门开口的受试者被来自投影仪的光照亮。 当照明照明场所时顶板的位置被认为是起点。 顶板从起点移动光源与表面线圈之间的距离。 这实现了要拍摄的部位与表面线圈之间的精确的位置调整。