CT BRAIN & NECK ANGIOGRAPHY
Also Known As
Lab Test
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About The Test
CT BRAIN & NECK ANGIOGRAPHY combines X-rays and computer processing to create 3-D pictures of arteries and veins. No catheter is inserted into the brain, making the test safer and more comfortable than traditional angiography.
2. What is CT Angiography Head and Neck?
A CT scanner circles around you while a contrast dye highlights blood vessels. The result is a detailed map that shows:
- Narrowed or blocked arteries
- Aneurysms
- Vascular malformations
3. When and Who Needs to Take a CT Angiography Head and Neck?
Common Reasons
- Sudden, severe headache (possible aneurysm)
- Mini-stroke or stroke symptoms
- Dizziness or vision problems
- Follow-up after surgery or stent placement
Who Should Consider It
- Adults 40+ with high blood pressure, diabetes, or high cholesterol
- Smokers or people with a family history of stroke
- Anyone with traumatic head or neck injury
List of Parameters
- Vessel diameter & wall thickness
- Degree of stenosis (blockage %)
- Presence of aneurysm size & location
- Blood-flow direction and speed
- Soft-tissue abnormalities near vessels
Why This Test
- Confirm stroke risk before symptoms worsen
- Plan minimally invasive procedures
- Monitor known aneurysms or vascular disease
- Investigate sudden fainting or pulsatile tinnitus
When to Take Test
Benefits
Benefits of Taking the Test:
- Fast: 5–10 minutes total scan time
- Accurate: finds blockages as small as 1 mm
- Painless: only an IV line is needed
- Outpatient: go home the same day
Illnesses Diagnosed with CT Brain and Neck Angiography:
- Stroke & transient ischemic attack (TIA)
- Brain aneurysms
- Arteriovenous malformations (AVMs)
- Carotid artery disease
- Dissections (tears in vessel walls)
Preparing for test
- Fast 4 hours before the scan (clear fluids allowed)
- Remove metal objects (jewellery, hairpins)
- Inform staff of allergies or kidney issues
11. Pre-requisites
- Recent creatinine test if you have kidney disease
- List of current medications (especially metformin)
- Pregnancy status for women of child-bearing age
12. Best Time to Take the CT Angiography Head and Neck
- Within 24 hours of stroke symptoms for best outcomes
- Early morning slots reduce wait time and fasting discomfort
- Any day convenient, but avoid after heavy meals
13. Eligibility
- Adults and seniors in stable condition
- Children only when medically justified and weight-adjusted dose used
- Not suitable for those with severe iodine allergy or uncontrolled hyperthyroidism
14. Procedure for Taking a CT Angiography Head and Neck
- Check-in and brief medical history
- Change into gown; IV line inserted for contrast
- Lie on scanner table; head rests in cushioned holder
- Table moves through scanner while you hold still for 5–10 seconds
- Contrast injection—may feel warm for 30 seconds
- Scan completes; IV removed, observation for 15 minutes
15. Caution Before Taking the Test
- Inform if you have asthma or prior contrast reaction
- Discuss renal function—extra hydration may be needed
- Bring a companion if you usually feel anxious
Test Results
Results And Interpretations
| Finding / Observation | Description | General Interpretation / Significance |
|---|---|---|
| Normal scan | No abnormalities detected in arteries and veins | Indicates healthy blood vessels with no signs of stenosis or aneurysm |
| Mild stenosis | Less than 50% narrowing of artery lumen | Usually managed with lifestyle changes; monitor progression |
| Moderate–severe stenosis | Greater than 50% narrowing, possibly up to near occlusion | Requires referral to specialist; risk of stroke or TIA |
| Aneurysm detected | Bulging or dilation of vessel wall with size/location noted | May need monitoring or intervention depending on size and rupture risk |
Risks & Limitations
Low but Real Risks
- Mild allergic reaction to contrast dye (1 in 1,000)
- Small radiation dose (similar to 6 months of natural background)
- Not ideal for pregnant women unless absolutely necessary
Limitations
- Calcium in vessel walls can hide small plaques
- Claustrophobia may require mild sedation
5. Types of CT Angiography Head and Neck
- Standard CT Angiography: full head & neck vessel scan
- CT Cerebral Angiography: focuses on brain arteries only
- CT Carotid Angiography: centres on neck (carotid & vertebral arteries)
FAQs
How long does CT BRAIN & NECK ANGIOGRAPHY take?
About 15 minutes from check-in to finish.
Is the contrast dye safe?
Yes, adverse reactions are rare and our staff is trained to handle them.
Can I drive after the scan?
Yes, unless you received sedation—which is uncommon for this scan.
Does insurance cover the test?
Most policies cover medically indicated scans; our front desk verifies coverage in advance.
What are the next steps after the scan?
Your referring physician will receive the detailed report from our radiologist. They will then schedule a follow-up appointment with you to review the results, explain what they mean for your health, and discuss any necessary treatments, lifestyle changes, or further follow-up tests.