Table 1. Characteristics of study population and of patient’s CT-scanner acquisition protocols. Atheroma has been graded according to the Trans-Atlantic Inter-Society Consensus for the management of peripheral arterial disease (11). 2-mm-slice-thickness axial reconstructions were obtained from various CT-scanner scanning protocols and imported into the 3D-slicer software.

Patient	Birth date	Etiology of chronic renal failure	Degree of calcification	TASC II classification	CT-scanner acquisition protocol
Case 1	1966	Diabetic nephropathy	Very high	Type D	64-slice, 1-mm helical, 120 kV
Case 2	1948	IgA nephropathy	High	Type D	64-slice, 1-mm helical, 140 kV
Case 3	1963	Diabetic nephropathy	Moderate	Type C	160-slice, 0.5-mm helical, 120 kV
Case 4	1972	IgA nephropathy	Very low	Type A	64-slice, 1-mm helical, 120 kV