1. Use of real time imaging in identifying deep venous obstruction: a preliminary report;Talbot;Bruit,1982
2. Doppler ultrasonic evaluation of venous disease;Barnes,1975
3. Real time B-mode venous ultrasound;Sullivan;J VASC SURG,1984
4. The efficacy of ultrasonic venography in the detection of calf vein thrombosis;Semrow;J Vasc Technol,1988
5. Lower extremity venous duplex imaging of asymptomatic patients: our one-year experience;Winkler;J Vasc Technol,1992