The indications for peripheral venous ultrasound examinations include :

The indications for peripheral venous ultrasound examinations include :

• Evaluation of possible venous thromboembolic disease or venous obstruction in symptomatic or high-risk asymptomatic individuals.
• Serial evaluation may be necessary in some high-risk individuals (eg, based on history, pretest probability, and/or D-dimer test) whose initial examination is negative for deep venous thrombosis.
• Assessment of venous insufficiency, reflux, and varicosities.
• Postprocedural assessment of venous ablation or other interventions.
• Assessment of dialysis access.
• Venous mapping before surgical procedure.
• Evaluation of veins before venous access.
• Follow-up for patients with known venous thrombosis at or near the anticipated end of anticoagulation to determine if residual venous thrombosis is present.