1. Duplex scanner II for simultaneous imaging of artery tissues and flow, IEEE publication 1974;Barber,1974
2. Use of real-time imaging in identifying deep venous obstruction;Talbot,1982
3. Diagnosis of deep venous thrombosis;Cranley,1990
4. Seeing is believing: a clot is a clot, on a duplex scan or a phlebogram;Cranley;Echocard,1987
5. B-mode venous imaging;Karkow,1987