Comparison between 64-row CT angiography and digital subtraction angiography in the study of lower extremities: personal experience Confronto tra angio-TC a 64 strati e angiografia digitale nello studio degli arti inferiori: esperienza personale

Purpose. This study was undertaken to evaluate the potential of 64-row multislice computed tomography (CT) versus digital subtraction angiography (DSA) in detecting significant lesions of lower-extremity inflow and runoff arteries. Materials and methods. Fifty-three patients underwent 64row multislice CT and DSA over a mean of 36 days. The vascular tree was divided into 33 segments. Three readers independently reviewed the axial CT scans and multiplanar oblique and two- and three-dimensional reconstructions (maximum intensity projection and volume rendering) images to assess degree of stenosis according to four categories: 1 (0%‐49% stenosis); 2 (50%‐99% stenosis); 3 (occluded); 4 (not evaluable). In all cases, DSA was