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    • 8. 发明授权
    • Flow differentiation scheme for magnetic resonance angiography
    • 磁共振血管造影的流动分化方案
    • US5521502A
    • 1996-05-28
    • US232377
    • 1994-04-25
    • John M. Siegel, Jr.David N. Ku
    • John M. Siegel, Jr.David N. Ku
    • G01F1/704G01R33/561G01R33/563G01R33/48
    • G01F1/704G01R33/563G01R33/5615
    • A flow differentiation scheme is disclosed for magnetic resonance imaging (MRI) of fluid flow in regions of turbulent flow. The flow differentiation scheme comprises the steps of (1) obtaining a first magnetic resonance (MR) image of the region, (2) obtaining a second MR image of the same region with an imaging parameter or imaging sequence altered, and (3) logically differentiating the first and second images with respect to flow to create a difference image. The process may be enhanced by superimposing one of the original images, upon an image that has been flow differentiated. As a result, a substantial amount of the static signal is suppressed producing superior angiograms of diseased and undiseased blood vessels. Additionally, the scheme can be used to image any fluid flow in any body or thing.
    • 公开了用于湍流区域中流体流动的磁共振成像(MRI)的流动分化方案。 流动微分方案包括以下步骤:(1)获得该区域的第一磁共振(MR)图像,(2)用成像参数或成像序列改变获得相同区域的第二MR图像,以及(3)逻辑上 相对于流动来区分第一和第二图像以产生差异图像。 可以通过将原始图像中的一个重叠在已经被流分辨的图像上来增强该过程。 结果,大量的静电信号被抑制,从而产生患病和未发病的血管的优异血管造影。 此外,该方案可用于对任何身体或物体中的任何流体流进行成像。