Color Duplex Venous Ultrasound Exam
The modern treatment of venous disease is made possible by advances in technology. One important advancement is in ultrasound. Image quality and other features have improved significantly. Ultrasound is used to diagnose chronic venous insufficiency (reflux) and to guide the catheters and other intravascular equipment. Ultrasound is used to check for deep vein thrombosis, successful vein ablations, and other diagnostic investigations.
Color duplex ultrasound is the term for the type of ultrasound machine we use. Duplex stands for the combination of B-mode ultrasound (the image of the vein) and continuous -wave Doppler (which analyzes the flow of blood in the vessel). Color-flow is the feature that converts the Doppler information to color areas in the image of the vein.
Typically, a new patient evaluation involves a detailed color duplex examination of the legs. The exam takes about 30 minutes. Dr. Prevosti discusses the results of the ultrasound examination with the patient. During procedures such as radiofrequency ablation (also known as radiofrequency closure), endovenous laser ablation (also known as endovenous therapy), and ultrasound guided sclerotherapy, ultrasound is used to guide treatment. For post-procedure follow-up exams, ultrasound is used to check the results of the procedure, and to check for deep vein thrombosis. Follow-up ultrasound exams take about 10 to 15 minutes.
Dr. Prevosti demonstrates a venous ultrasound scan on a patient.