Abstract
ABSTRACTA programme was written to detect flow in a sequence of MR images and to construct 3‐D vessel maps from the detected flow regions. Reduction in first echo intensity and prolongation of calculated T2 value were used as flow‐detection criteria. The programme was used to image the aorta in 6 patients with abdominal aortic aneurysm and 5 patients with aortic dissection. Results were compared with contrast angiography in 9 cases and X‐ray CT in 2. The images obtained by the two techniques were comparable in 9 cases. In 2 cases of aortic dissection, where flow in the false lumen was slow, the false lumen could not be demonstrated by angiography, but was clearly seen in the reconstructed MR images.
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