Multi-detector computed tomography (MDCT) has established concerning analysis and quantification of vascular calcification in various vessels. We used MDCT for assessment of plaque architecture in smaller (<50 mm) and larger (≥50 mm) infrarenal abdominal aortic aneurysms (AAA). Study included 42 patients (<50 mm: n=20; ≥50 mm: n=22), who all underwent MDCT. Two readers performed quantitative and qualitative analysis, including calculation of calcium scores and measurement of plaque size and thickness. Calcium scores were calculated; t-tests were done to look for statistical differences between calcium scores and density ratios (=calcium score/aortic cross-sectional area). Cardiovascular risk factors were compared in patients with smaller and larger aneurysms.