Lower-Limb Arterial Duplex
A non-invasive ultrasound examination of blood flow in the leg arteries. Results are interpreted with symptoms, pulse examination, and the clinical question.
Check urgent circulation signs first
A limb that suddenly becomes very painful, cold, pale, or blue, especially with new numbness, weakness, or loss of movement, needs emergency assessment. Call 112 or go to the nearest emergency department immediately; do not wait for a clinic appointment or WhatsApp reply.
The booking option below is for stable circulation concerns only; symptoms and test results require clinical assessment and are not a self-diagnosis.
Expected duration
30-45 minutes
Preparation
Usually no special preparation
Report
As arranged
Comfort
Usually well tolerated
What is Lower-Limb Arterial Duplex?
Lower-limb arterial duplex uses ultrasound to examine the arteries of the legs and assess blood-flow patterns.
The examination may identify narrowing, blockage, or other arterial changes that could help explain symptoms or guide follow-up.
Common Reasons for Referral
- Leg pain or cramping with walking
- Numbness or weakness with concern about circulation
- A cold, pale, or discolored foot or leg
- Skin color or temperature changes
- A wound on the foot or leg that is slow to heal
- Weak pulses or another clinician-defined arterial concern
What Happens During the Examination
- 1You lie on an examination table with the legs accessible
- 2Blood-pressure cuffs may be used when part of the requested protocol
- 3Ultrasound gel is applied along the leg
- 4The transducer follows the arteries from the groin toward the ankle
- 5Images, waveforms, and blood-flow measurements are recorded
Frequently Asked Questions
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