Portal de Periódicos da CAPES

Spiral CT Angiography in the Assessment of Abdominal Aortic Aneurysms After Stent Grafting: Value of Maximum Intensity Projections

1997; Lippincott Williams & Wilkins; Volume: 21; Issue: 3 Linguagem: Inglês

10.1097/00004728-199705000-00025

1532-3145

R. Dorffner, Siegfried Thurnher, S. Youssefzadeh, F. Winkelbauer, Thomas Hölzenbein, P. Polterauer, Johannes Lämmer,

Advanced X-ray and CT Imaging

Purpose: Our goal was to evaluate the value of maximum intensity projections (MIPs) rendered from spiral CT in the assessment of abdominal aortic aneurysms after stent graft implantation. Method: Spiral CT of the aorta was performed in 28 patients 1 week after implantation of covered aortic stent grafts. MIPs were evaluated in a blinded fashion. Transaxial scans and intravenous angiographs were considered the reference standard. Results: Stent deformity was evident on the MIPs in 5 cases and stent angulation was seen in 24 cases. The excluded aneurysmal sac was visualized in 14 (50%) cases. MIPs depicted the patent inferior mesenteric artery in 20 of 23 cases (87%). Renal artery occlusion (n = 3), leaks (n = 8), and parietal thrombi (n = 3) were detected on the MIPs in all cases. Conclusion: MIPs are a valuable tool in the assessment of aortic stent grafts.