About this procedure
Vascular ultrasound of the head and neck uses imaging and Doppler measurements to assess accessible arteries and veins, especially blood flow and possible narrowing in neck vessels.
What the examination or consultation can show
The scan can show plaque, vessel-wall changes and altered flow in accessible carotid or vertebral artery segments. Its scope is defined by the examination protocol; it is not a universal investigation for headaches or dizziness.
When an assessment may help
A clinician may request this scan after detecting possible vascular disease, for follow-up of known narrowing or to clarify a documented vascular risk. A headache on its own does not automatically justify neck-vessel ultrasound.
Important limitations and differences
Some vessels inside the skull cannot be evaluated by a routine neck scan. A normal result does not exclude stroke or every neurological disorder. CT, MRI and neurological examination answer different questions.
Preparation and procedure
The clinician places the transducer on the neck and obtains pictures of vessel walls and flow-speed measurements. Usually no special preparation is required; wear clothing that leaves the neck accessible. Bring previous vascular reports and mention any stents or vascular surgery.
Next steps and follow-up
Ultrasound findings do not themselves prescribe medication or procedures. A qualified clinician assesses the degree of narrowing, symptoms and overall risk before discussing monitoring, other imaging or treatment.
When to seek urgent care
Sudden facial droop, arm or leg weakness, trouble speaking or loss of vision can indicate stroke. Call 103 immediately, even if symptoms improve, and do not wait for a routine vascular ultrasound.
Related health information
Headaches in adults; Dizziness in adults; Arterial ultrasound of the limbs.
Signs and symptoms
Diagnosis and tests
Care and treatment approaches
When to seek urgent care
Frequently asked questions
Is Doppler ultrasound needed for every headache?
No. The need for vascular imaging depends on examination, other symptoms and the suspected diagnosis.
Can ultrasound estimate carotid narrowing?
It can assess flow changes and features suggesting stenosis, but clinical interpretation may require additional information or imaging.
Do I need special preparation?
Usually not. Bring previous vascular reports and let the clinician know about operations or stents.
Important information
A medical consultation is needed for diagnosis and treatment recommendations.
Self-treatment can be harmful to your health.
