Value of color Doppler ultrasound in the diagnosis of deep venous thrombosis of the lower limbs

Objective To evaluate the value of color Doppler ultrasound in the diagnosis of deep venous thrombosis of the lower limbs.Methods A total of 212 cases clinically suspected as deep venous thrombosis of the lower extremity were examined with color Doppler ultrasound.The anatomic tracing,diameter,wall,intraluminal echogenicity and thrombosis echogenicity of the deep veins of the lower extremity were observed.Results Totally,201 deep veins were diagnosed as thrombosis by color Doppler ultrasound.The features of thrombosis on ultrasound were enlarged diameter of vessels,intraluminal dim,hypoechogenic or heterogeneous weak echogenicity,undistinguishable vascular structure,and incompressible vein under slight compression with probe.Color Doppler ultrasound revealed the absence of blood flow or slender blood flow signal in veins.Conclusion Color Doppler ultrasound is valuable in the diagnosis of deep venous thrombosis of the lower limbs.It is an accurate,safe,non-invasive and convenient method in early diagnosis,treatment and reducement of the complications clinically.