Deep vein thrombosis detection by 99mTc-plasmin test and phlebography

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Abstract
During a 2‐year period the diagnostic value of 99mTc‐labelled‐plasmin test was evaluated in 63 patients admitted with clinical signs of deep vein thrombosis (DVT). In comparison with a conventional phlebography the diagnostic sensitivity and specificity of the plasmin test was 0.97 and 0.55, respectively. The predictive value in positive cases was 0.79 and in negative 0.92. The sensitivity was highest for thrombosis in the calf and popliteal regions, while the specificity was higher for thrombosis in the femoral veins. It is concluded that the 99mTc‐labelled‐plasmin test is suitable for DVT‐screening in groups of high‐risk patients and is simple and rapid. In positive cases the DVT diagnosis must be verified by phlebography.