Cross-sectional area reduction of the aortic ostium by suprarenal stent wires: in vitro phantom study by CT virtual angioscopy.
The study aims to investigate the reduction of cross-sectional area of the aortic ostium by the presence of aortic stent wires observed using CT virtual angioscopy in an aorta phantom. A human aorta phantom was built with a commercial stent graft placed in situ to simulate a repaired aortic aneurysm. Virtual angioscopic images of the aortic ostium and stent wires were generated in the locations of renal arteries, superior mesenteric artery and corresponding cross-sectional area reduction caused by stent wires was measured by virtual angioscopy in various scanning parameters. Our study showed that cross-sectional area reduction of the aortic ostium was determined by the diameter of renal ostium and stent wires, as well as the number of stent wires crossing the aortic ostium.
School of Applied Medical Sciences and Sports Studies, University of Ulster, Room 15J 13, Shore Road, Newtownabbey BT37 0QB, Northern Ireland, UK. zh.sun@ulster.ac.uk
Zhonghua
Z
Sun
Huiru
H
Zheng
D017546:Angioscopy / Q000379:methods*; D017544:Aortic Aneurysm, Abdominal / Q000000981:diagnostic imaging*; D006801:Humans; D019047:Phantoms, Imaging; D015607:Stents; D014057:Tomography, X-Ray Computed; D014584:User-Computer Interface