Evaluation of the Venous System of the Lower Extremity by Three Dimensional Spiral-CT-Venography

There are two common diseases involving the venous system of the lower extremity. One is deep vein thrombosis (DVT) and the other is venous insufficiency resulting in varicose veins. Until now, the primary imaging modality for the lower extremity venous system is duplex and/or color Doppler sonography because of its diagnostic performance, capability to evaluate hemodynamic information, convenience and availability. However, it is operator-dependent and has inherent limitations to evaluate deep-seated pelvic veins. Overall picture of the disease status cannot be depicted with ultrasound examinations. We have est…