Abdominal aneurysms of the aorta mostly develop infrarenal by angioscl
erosis. The detection of abdominal aneurysms with calcareous infiltrat
ion or parietal thrombus by sonography will be successfull in thin pat
ients without intestinal gas irritation. Duplex sonography shows the c
irculated lumen, meanwhile computed tomography is used for the preoper
ative localisation of renal arteries.