Which diagnostic test is used to visualize veins and evaluate venous insufficiency or blockage?

• A. Myelography
• B. MRI
• C. Venography
• D. X-ray

Answer: (C)

Visualizing the venous system requires an imaging method that highlights veins and how blood flows through them. Venography does this by injecting contrast into a vein and taking radiographs as the contrast travels, so you can see the course of the veins, any reflux, dilation, or blockages, and assess patency. That direct visualization of the venous pathways makes it the best choice for evaluating venous insufficiency or obstruction. Other options focus on different structures: X-ray mainly shows bones and has limited soft-tissue detail; myelography targets the spinal canal; MRI offers broad soft-tissue imaging but isn’t the standard test specifically for diagnosing venous insufficiency or blockage. In practice, duplex ultrasound is often used first to screen venous disease, with venography reserved for more complex cases or prior to interventions.