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Radiology, Vol 157, 721-725, Copyright © 1985 by Radiological Society of North America

ARTICLES

MR imaging of the aorta with three-dimensional vessel reconstruction: validation by angiography

PE Valk, JD Hale, L Kaufman, LE Crooks and CB Higgins

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.


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K. Chandrasekaran, C. M. Sehgal, T.-L. Hsu, N. A. Young, A. J. D'Adamo, R. A. Robb, and N. G. Pandian
Three-Dimensional Volumetric Ultrasound Imaging of Arterial Pathology from Two-Dimensional Intravascular Ultrasound: An in Vitro Study
Angiology, April 1, 1994; 45(4): 253 - 264.
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