Magnetic resonance imaging method
    3.
    发明授权
    Magnetic resonance imaging method 失效
    磁共振成像方法

    公开(公告)号:US4953554A

    公开(公告)日:1990-09-04

    申请号:US164263

    申请日:1988-03-04

    摘要: A magnetic resonance imaging (MRI) method imposes void planes on tissue to be imaged, which may form a grid pattern of lines which, when later imaged, produces a reference void in the image. This is especially useful in studies of the heart where the contraction and relaxation of the heart can thus be measured. Also for static tissue the method is useful for radiation therapy port planning. The grid reference or void planes are formed by a simple use of an RF pulse in conjunction with the use of a slice select gradient which provides sufficient power so that those protons in the grid are saturated so that in the later imaging step there will be significant spin echo signal difference between the grid imposed areas and the remaining regions of the tissue.

    摘要翻译: 磁共振成像(MRI)方法在要成像的组织上施加空白平面,其可以形成线的网格图案,其在稍后成像时在图像中产生参考空隙。 这在心脏的研究中特别有用,因此可以测量心脏的收缩和松弛。 对于静态组织,该方法也适用于放射治疗港口规划。 网格参考或空白平面通过简单地使用RF脉冲与使用提供足够功率的切片选择梯度相结合形成,使得网格中的这些质子饱和,使得在后面的成像步骤中将存在显着的 网格施加区域和组织的剩余区域之间的自旋回波信号差异。