Fast MR angiography of the aortoiliac arteries and arteries of the lower extremity: value of bolus-enhanced, whole-volume subtraction technique.
- 1 August 1995
- journal article
- research article
- Published by American Roentgen Ray Society in American Journal of Roentgenology
- Vol. 165 (2) , 431-437
- https://doi.org/10.2214/ajr.165.2.7618572
Abstract
MR angiography of the abdominal aorta and lower limb arteries has been hampered by the need to depict long segments of the arteries in short imaging times. To overcome these limitations, we combined fast acquisition of coronal sections with bolus-enhancement technique, subtraction, and whole-volume projection display. The purpose of this preliminary study was to determine the value of using this technique in patients with abdominal aortic lesions and atherosclerotic occlusive disease of the lower limbs.Ten healthy volunteers and 20 patients with abdominal aortic aneurysms (n = 15), vascular graft (n = 3), arteriovenous fistula (n = 1), and abdominal aortic dissection (n = 1) were examined by segmented K-space ultrafast gradient-echo sequences. Sequential 50-cm coronal sections were acquired before and after an IV bolus injection of gadolinium (0.1 mmol/kg). Subtraction images were created by subtracting precontrast from postcontrast images. In all MR images, signal intensity was measured in the aorta, the...Keywords
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