Helical CT Angiography of Abdominal AorticAneurysms Treated with Suprarenal Stent Grafting: A Pictorial Essay

The endovascular repair of abdominal aorticaneurysm (AAA) with stent grafts is rapidly becoming an importantalternative to open repair. Suprarenal stent grafting, recentlymodified from conventional infrarenal stent grafting, is a techniquefor the purpose of treating patients with inappropriate aneurysm necks.Unlike open repair, the success of endoluminal repair cannot beascertained by means of direct examination and thus relies on imagingresults. The use of conventional angiography for arterial imaging hasbecome less dominant, while helical computed tomography angiography(CTA) has become the imaging modality of choice for both preoperativeassessment and postoperative followup after treatment with stent graftimplants. There is an increasing likelihood that radiologists willbecome more and more involved in the procedure of aortic stent graftingand in giving the radiological report on these patients treated withstent grafts. It is necessary for radiologists to be familiar with theimaging findings, including common and uncommon appearances followingaortic stent grafting. The purpose of this pictorial essay is todescribe and present normal and abnormal imaging appearances followingaortic stent grafting based on helical CTA.