Valk P E, Hale J D, Kaufman L, Crooks L E, Higgins C B
Radiology. 1985 Dec;157(3):721-5. doi: 10.1148/radiology.157.3.4059559.
Longitudinal vascular structures are difficult to observe on the standard abdominal transaxial magnetic resonance (MR) image sections. To display the information in a three-dimensional reconstruction, an algorithm was written to identify blood flow in a series of transaxial MR sections and was applied to reconstructing images of the aorta and iliac arteries in 12 patients with aortic aneurysm, dissection, or aortoiliac atherosclerosis. Results were validated by angiography. In all patients, the outline of the flow channel in the reconstructed image followed closely the outline of the lumen on angiograms. In aortic dissection, the MR images showed the two lumens more completely than did the angiograms, and in atherosclerosis, sites of vascular stenosis were correctly identified on MR images. The technique is valuable in providing anatomic information as well as functional information on cross-sectional areas and relative flow velocities.
纵向血管结构在标准腹部横轴位磁共振（MR）图像上很难观察到。为了在三维重建中展示这些信息，编写了一种算法来识别一系列横轴位MR图像中的血流，并将其应用于12例患有主动脉瘤、主动脉夹层或主髂动脉粥样硬化患者的主动脉和髂动脉图像重建。结果通过血管造影进行验证。在所有患者中，重建图像中血流通道的轮廓与血管造影图上管腔的轮廓紧密相符。在主动脉夹层中，MR图像比血管造影更完整地显示了两个管腔，而在动脉粥样硬化中，MR图像能正确识别血管狭窄部位。该技术在提供解剖信息以及关于横截面积和相对流速的功能信息方面很有价值。
