Magnetic resonance venography (MRV) is a noninvasive medical procedure used to visualize veins. The MRV uses the magnetic resonance imaging (MRI) machine along with special computer software that allows imaging of blood as it flows through the veins. These images help diagnose blood clots, strokes, or other disease processes.
Before undergoing an MRI, alert your doctor if you have implants, metal clips, or other metallic objects in your body as these can be affected by the magnet.
Preparing for MR venography
Do NOT have anything to eat or drink three hours before your examination.