RESUMEN
Objective To investigate the clinical value of color doppler ultrasound in the diagnosis of thrombus of lower extremity veins. Methods A total of 84 patients with thrombus of lower extremity veins(DVT) underwent color Doppler ultrasound and digital subtraction angiography (DSA), and analyzed the test results comparatively. Results Color doppler ultrasound diagnosed deep vein thrombosis(DVT) in 68 cases of all 84 patients, 49 cases were in the left low-er extremity (72.1%), 19 cases were in the right lower extremity (27.9%),patients were in the left more than in the right;In all 68 patients,39 cases were in acute stage,20 cases were in sub acute stage, 9 cases were in chronic period. DSA diagnosed lower extremity DVT in 66 cases in 68 cases diagnosed by color doppler ultrasound,DSA diagnosed lower extremity DVT in 64 cases, 4 cases that examined by DSA were negative. Color doppler ultrasound diagnosed normal in 18 cases, DSA found lower extremity DVT in 2 cases. Compared with the results of DSA examination, the sensitivity and the specificity of color doppler ultrasound for diagnosing DVT were 96.97% and 88.9%, the diagnostic consistency of both methods was high (Kappa=0.78). Conclusion Color doppler ultrasound is simple, fast and repro-ducible, it is high in consistency with DSA and has important value in the diagnosis of lower extremity DVT.