Vascular Ultrasound
Preparing for your vascular ultrasound
Quick reference
Scan type
Ultrasound
Duration
30-60 minutes
Preparation
Preparation varies by area
Bring
Referral letter
What is a vascular ultrasound
Vascular ultrasound uses sound waves and Doppler technology to assess blood flow in arteries and veins. Common types include carotid artery scanning (neck vessels), aortic aneurysm screening (abdominal aorta), lower limb arterial assessment, and venous incompetence studies.
Why might it be requested
Vascular ultrasound may be requested to assess circulation in the legs, investigate carotid artery narrowing before surgical decisions, screen for aortic aneurysm, or investigate symptoms such as leg pain, cold feet, or swollen legs.
How should I prepare
Preparation depends on the area being scanned. Abdominal vascular scans (e.g. aortic aneurysm screening) often require fasting for 4 to 6 hours. Carotid and peripheral vascular studies may require no specific preparation. Always follow your clinic's specific instructions.
What should I wear
Wear comfortable, loose-fitting clothing appropriate to the area being scanned. For neck/carotid scans, avoid high necklines. For leg studies, wear or bring shorts or loose trousers.
What happens during the scan
Gel is applied to the skin and a probe is moved over the area. You will hear pulsed sounds as blood flow is measured using Doppler technology. You may be asked to lie in specific positions during the examination.
Will it hurt
Vascular ultrasound is generally not painful.
How long does it take
Vascular studies can take 30 to 60 minutes or longer depending on the complexity and areas examined.
When will I get results
Results are sent to your referring clinician. Ask your imaging centre about expected timescales.
When should I contact the clinic
If you experience new or worsening symptoms before your scan, particularly sudden severe limb pain, seek urgent medical advice. Do not wait for a scan appointment if symptoms are severe.
Always follow your clinic specific instructions. The information here is general guidance only. Your clinic may have different requirements.