BLAND ALTMAN METHOD GAVE NEW INSIGHT INTO LOWER LIMBS' DUPLEX VERSUS ARTERIOGRAPHY COMPARISON

Purpose: To assess the reliability of duplex scanning, when compared with DSA, in diagnosing lower limbs' arterial disease, applying three different statistical approaches. Methods and Materials: 60 legs were studied. Each leg was divided in 5 arterial segments, from aortoiliac to popliteal. DSA and duplex US were performed. The disease in each segment was assessed as significant or insignificant or classified into 5 degrees concerning the level of stenosis (patent vessel, mild, moderate and severe stenosis and occluded vessel). Three statistical approaches were applied: calculating sensitivity and specificity,…