Comparison of Computed Tomography Venography and Intravascular Ultrasound Examination in Screening and Classification of Iliac Vein Obstruction in Patients with Chronic Venous Disease

CTV is a powerful screening method in determining the precise point of compression and classifying IVO in limbs with symptomatic CVD when compared with IVUS. The prevalence of an obstruction above the iliac vein confluence is significant and should be considered in iliac vein stenting treatment strategy. The tomographic classification system proposed here may help to define the optimum technique of treatment, prognosis, and comparison of outcome results.