Evaluation of color Doppler ultrasound in diagnosing lower extremity deep venous thrombosis

Objective To observe reliability of color Doppler ultrasound in diagnosis lower extremity deep venous thrombosis(DVT).Methods 45 lower limbs in 41 cases suspected as deep venous thrombosis were examined by CDFI.The results were analyzed.Results In this group,26 cases of 41 were found venous thrombosis, 11 cases in the right and 4 cases in both.The most common site of venous thrombosis was the left lower limbs.The femoral vein,superficial femoral vein ,deep femoral vein, popliteal vein were involved frequently.Hyper-echo or hypo-echo masses were seen in the lumen.Thin blood flow or no blood flow was observed in color Doppler.Slow velocity was detected or the velocity was not changed with deep breath in pulse Doppler.Conclusion Color Doppler ultrasound has high reliability in diagnosing lower extremity DVT.It an excellent diagnostic tool in clinical treatment of such disease. Key words: Ultrasonography ,Doppler,color; Venous thrombosis