Method and apparatus for calibrating a navigation system in relation to
image data of a magnetic resonance apparatus
    1.
    发明授权
    Method and apparatus for calibrating a navigation system in relation to image data of a magnetic resonance apparatus 失效
    相对于磁共振装置的图像数据校准导航系统的方法和装置

    公开(公告)号:US6026315A

    公开(公告)日:2000-02-15

    申请号:US44248

    申请日:1998-03-19

    摘要: In a method and apparatus for calibrating a navigation system in relation to image data of a magnetic resonance apparatus, positions of at least three markers arranged in an imaging volume of a magnetic resonance apparatus are determined with the navigation system in a first coordinate system, and are determined by means of magnetic resonance in a second coordinate system. From the positions of the markers in the two coordinate systems, a position and an orientation of the two coordinate systems to one another are determined. Localization data are transformed into the second coordinate system. An apparatus for conducting the method has at least one marker having a substance that can be detected using magnetic resonance technology, in spatial allocation to optical markings. A pickup coil can be spatially allocated to each marker.

    摘要翻译: 在相对于磁共振装置的图像数据校准导航系统的方法和装置中,利用导航系统在第一坐标系中确定布置在磁共振装置的成像体积中的至少三个标记的位置,以及 通过在第二坐标系中的磁共振来确定。 从两个坐标系中的标记的位置,确定两个坐标系彼此的位置和取向。 本地化数据被转换为第二坐标系。 用于进行该方法的装置具有至少一个具有可以使用磁共振技术检测的物质的标记,在光学标记的空间分配中。 拾取线圈可以在空间上分配给每个标记。

    Patient bed for use with magnetic resonance imaging apparatus
    2.
    发明授权
    Patient bed for use with magnetic resonance imaging apparatus 有权
    用于磁共振成像装置的患者床

    公开(公告)号:US06246239B1

    公开(公告)日:2001-06-12

    申请号:US09136018

    申请日:1998-08-19

    IPC分类号: G01V300

    CPC分类号: A61B5/0555

    摘要: An expanded diagnostic NMR installation with operating functionality contains an NMR imaging apparatus with a patient bed for transporting a patient into an imaging volume of the NMR imaging apparatus. An operating column for receiving the patient bed is arranged next to the NMR imaging apparatus at a fixed distance therefrom along the longitudinal direction of motion of the patient bed. The operating column contains a swinging mechanism for rotating or pivoting the patient bed around a vertical axis.

    摘要翻译: 具有操作功能的扩展诊断NMR装置包含具有用于将患者输送到NMR成像装置的成像体积的患者床的NMR成像装置。 用于接收患者床的操作柱沿着MRI成像设备旁边沿着患者床的纵向运动方向固定距离。 操作柱包括用于围绕垂直轴旋转或枢转病床的摆动机构。

    Method for the operation of a nuclear magnetic resonance tomograpohy
apparatus for the acquisition of at least two differently weighted
images
    4.
    发明授权
    Method for the operation of a nuclear magnetic resonance tomograpohy apparatus for the acquisition of at least two differently weighted images 失效
    用于操作用于获取至少两个不同加权的图像的核磁共振断层摄影装置的方法

    公开(公告)号:US5557204A

    公开(公告)日:1996-09-17

    申请号:US510145

    申请日:1995-08-02

    申请人: Gerald Lenz

    发明人: Gerald Lenz

    摘要: In a turbo-spin echo sequence, nuclear magnetic resonance signals lying chronologically closer to an excitation phase are entered into a first raw data matrix for the acquisition of a proton-density-weighted image and nuclear magnetic resonance signals lying farther from the excitation phase are entered into a second raw data matrix for the acquisition of a T2-weighted image. Fewer rows are acquired for the first raw data matrix after every excitation phase than are acquired for the second raw data matrix. This avoids nuclear magnetic resonance signals that are already relatively strongly T2-weighted from being employed for the acquisition of a proton-density-weighted image.

    摘要翻译: 在涡轮自旋回波序列中,逐渐靠近激发相位的核磁共振信号被输入到用于获取质子密度加权图像的第一原始数据矩阵中,并且离激发相位更远的核磁共振信号是 输入用于获取T2加权图像的第二原始数据矩阵。 在每个激励阶段之后,对于第二原始数据矩阵获取的第一原始数据矩阵获取的行数量少于第二原始数据矩阵。 这避免了已经相对强烈地T2加权的核磁共振信号被用于获取质子密度加权图像。