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1.发明授权
公开(公告)号：US5285160A
公开(公告)日：1994-02-08
申请号：US926575
申请日：1992-08-06
CPC分类号： G01R33/3415 , G01R33/28 , G01R33/34007 , G01R33/3678
摘要： Magnetic resonance apparatus includes a main magnet system (1) for generating a steady magnetic field, a magnet system (3) for generating gradient fields, an RF transmitter coil (9) and an RF receiver coil system (13) which includes first and second RF coil systems (47, 49) for detecting resonance signals generated in respective first and second regions of an object to be arranged on a supporting face (43), said regions being adjacently situated in a first direction (57), each of the first and second RF coil systems comprising at least a surface coil. The apparatus is intended notably for the examination of the spine of a patient arranged on the supporting face (43), the first region containing the thoracic segment of the spine (T-spine) and the second region containing the lumbar segment (L-spine). In order to enable easy adaptation of the position of the second RF coil system (49) to the location of the L-spine of an individual patient, the first RF coil system (47) is arranged to be stationary relative to the supporting face (43) in a first coil plane (53) extending substantially parallel to the supporting face, whereas the second RF coil system (49) is arranged to as to be displaceable in the first direction (57) in a second coil plane (61) which extends parallel to the first coil plane (53).
摘要翻译： 磁共振装置包括用于产生稳定磁场的主磁体系统（1），用于产生梯度场的磁体系统（3），RF发射器线圈（9）和RF接收器线圈系统（13），其包括第一和第二 用于检测在要布置在支撑面（43）上的物体的各自的第一和第二区域中产生的共振信号的RF线圈系统（47,49），所述区域相邻地位于第一方向（57）上，每个第一 以及包括至少一个表面线圈的第二RF线圈系统。 该装置特别用于检查布置在支撑面（43）上的患者的脊柱，第一区域包含脊柱（T型脊柱）的胸段，第二区域包含腰椎段（L型脊柱 ）。 为了使得能够容易地将第二RF线圈系统（49）的位置适应到单个患者的L脊的位置，第一RF线圈系统（47）被布置成相对于支撑面静止（ 在第一线圈平面（53）中基本上平行于支撑面延伸，而第二RF线圈系统（49）布置成在第二线圈平面（61）中沿第一方向（57）可移位，第二线圈平面 平行于第一线圈平面（53）延伸。
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公开(公告)号：US5534778A
公开(公告)日：1996-07-09
申请号：US294286
申请日：1994-08-23
CPC分类号： G01R33/285 , A61B5/0555 , A61B90/10 , A61B90/17 , A61B90/36 , A61B2017/3411
摘要： Magnetic resonance apparatus includes a magnet system (1) for generating a steady magnetic field in a measurement space (29), a coil system (3) for generating gradient fields in the measurement space, and at least one RF coil (9) which is accommodated in a housing (33) which can be arranged in the measurement space and which is suitable to accommodate an object (41 ) to be examined, and a jig for positioning an instrument (57) introduced into the object (41). This jig has a first stop (59) for defining the position of a free end of the instrument (57) in a first coordinate direction (Z) of a three-dimensional system of coordinates. The jig also has a perforated plate (55) which is provided with holes (53) which are arranged in a matrix which extends according to second and third coordinate directions (X, Y) of the coordinate system in order to position the instrument (57) in the second and third coordinate directions. The location of a coordinate axis extending parallel to the second or the third coordinate direction (X, Y) is defined by a first phantom (71) which is rigidly arranged in the housing (33).
摘要翻译： 磁共振装置包括用于在测量空间（29）中产生稳定磁场的磁体系统（1），用于在测量空间中产生梯度场的线圈系统（3）和至少一个RF线圈（9） 容纳在可以布置在测量空间中并且适于容纳被检查物体（41）的壳体（33）和用于定位引入到物体（41）中的仪器（57）的夹具。 该夹具具有用于在三维坐标系的第一坐标方向（Z）上限定仪器（57）的自由端的位置的第一止动件（59）。 所述夹具还具有多孔板（55），该多孔板（55）设置有孔（53），所述孔（53）以矩阵的形式设置，所述矩阵沿坐标系的第二和第三坐标方向（X，Y）延伸，以便定位仪器 ）在第二和第三坐标方向。 平行于第二或第三坐标方向（X，Y）延伸的坐标轴的位置由刚性地布置在壳体（33）中的第一体模（71）限定。
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公开(公告)号：US5682892A
公开(公告)日：1997-11-04
申请号：US639861
申请日：1996-04-26
CPC分类号： A61B90/11 , A61B2090/036
摘要： A jig for positioning an instrument, for example a biopsy needle, includes a stop (7) for defining the position of a free end (3) of the instrument in a first coordinate direction (Z) of a three-dimensional system of coordinates, and an adjusting mechanism (15, 17) for adjusting the position of the instrument in second (X) and third (Y) coordinate directions of the system of coordinates. The adjusting mechanism is accommodated in a housing (23) in which furthermore a phantom (5) is rigidly mounted. The adjusting mechanism includes a first and a second circular disc (15, 17), having a first and a second central axis (19, 21), respectively, each central axis extending perpendicularly to the plane of the relevant disc and through its center (16, 18). The first disc (15) is journalled in the housing (23) so as to be rotatable about the first central axis (19) and is provided with an eccentrically situated circular opening (27) whose diameter is substantially equal to the diameter of the second disc (17). The second disc (17) is journalled in said opening (27) so as to be rotatable about the second central axis (21). The first and second central axes (19, 21) extend parallel to the first coordinate direction (Z) and the first central axis intersects the plane of the second disc (17) at a distance (d) from the center (18) of the second disc which is smaller than the radius (r) of the second disc. At the same distance (d) from the center (18) a passage (29) is provided in the second disc (17), which passage is arranged to guide the instrument (1) in the first coordinate direction (Z).
摘要翻译： 用于定位仪器（例如活检针）的夹具包括用于在三维坐标系的第一坐标方向（Z）上限定仪器的自由端（3）的位置的止动件（7） 以及用于在所述坐标系的第二（X）和第三（Y）坐标方向上调节所述乐器的位置的调节机构（15,17）。 调节机构容纳在壳体（23）中，此外，模体（5）刚性地安装。 调节机构包括分别具有第一和第二中心轴线（19,21）的第一和第二圆盘（15,17），每个中心轴线垂直于有关盘片的平面并通过其中心（ 16，18）。 第一盘（15）被轴颈安装在壳体（23）中，以便围绕第一中心轴线（19）旋转并设置有偏心定位的圆形开口（27），其直径基本上等于第二中心轴线 光盘（17）。 第二盘（17）被轴颈安装在所述开口（27）中，以便能够围绕第二中心轴线（21）旋转。 所述第一和第二中心轴线（19,21）平行于所述第一坐标方向（Z）延伸，并且所述第一中心轴线与所述第二圆盘（17）的所述平面距离所述第二圆盘（17）的中心 第二盘比第二盘的半径（r）小。 在与中心（18）相同的距离（d）处，在第二盘（17）中设置通道（29），该通道设置成沿第一坐标方向（Z）引导器械（1）。
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