Valk P E, Hale J D, Crooks L E, Kaufman L, Higgins C B
J Comput Assist Tomogr. 1986 May-Jun;10(3):439-44.
A computer program was written to detect blood flow in a sequence of magnetic resonance images, using reduction in first echo intensity and prolongation of calculated T2 value, and to construct three-dimensional vessel maps from the detected flow regions. Reconstructed vessel images were coded to show cross-sectional area of the lumen and relative flow velocity along the length of the vessel. The program was applied to imaging the aorta and iliac arteries in 11 patients with atherosclerosis and results were compared with angiography. All sites of narrowing were identified by the algorithm, but no flow at all was detected at one site of partial occlusion.
编写了一个计算机程序，利用首次回波强度的降低和计算出的T2值的延长来检测一系列磁共振图像中的血流，并从检测到的血流区域构建三维血管图。对重建的血管图像进行编码，以显示管腔的横截面积和沿血管长度的相对流速。该程序应用于11例动脉粥样硬化患者的主动脉和髂动脉成像，并将结果与血管造影进行比较。算法识别出了所有狭窄部位，但在一个部分闭塞部位未检测到任何血流。
