A simple guide to this non-invasive diagnostic exam.

A vascular ultrasound uses sound waves to show how blood moves through a vessel. There is no radiation and no injection. A sonographer applies warm gel and moves a probe along the area being studied.

Some parts of the exam are done lying down and others standing, because vein behaviour changes with position. You may be asked to breathe in a particular way or to tense a muscle so the sonographer can see how the valves respond.

Most studies take between thirty and sixty minutes. A physician reviews the images afterward and discusses what they mean alongside your history and exam.

Worth bringing to your appointment

• Wear clothing that allows access to the area being studied
• Ask whether to skip caffeine or fast beforehand
• Bring prior imaging reports if you have them

Educational content cannot replace an individual evaluation. Follow the instructions from your own VIS care team.