CT BRAIN & ANGIOGRAPHY
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About The Test
When it comes to spotting problems in the blood vessels of your brain and neck, CT Brain & Angiography is the fastest, least-invasive way to get clear answers. At Cadabams Diagnostics, we use cutting-edge 128-slice CT scanners that complete the entire study in under 15 minutes—no hospital stay, no overnight fasting, and reports ready the same day.
2. What is CT Angiography Head and Neck?
CT angiography (CTA) head and neck is a specialised scan that uses X-rays and an iodine-based contrast dye to create 3-D pictures of the arteries supplying your brain and face. It shows:
- Blockages or narrowing
- Aneurysms or bulges
- Arterial malformations
Cadabams Diagnostics combines this with a CT Brain scan to capture both the brain tissue and its blood vessels in one seamless session.
3. When and Who Needs to Take a CT Angiography Head and Neck?
Common Scenarios
- Sudden, severe headaches or suspected stroke
- Dizziness, vision loss, or transient ischaemic attack (TIA)
- Follow-up after head injury or brain surgery
- Screening for aneurysm if there’s a family history
- Pre-operative planning for ENT or neurosurgery
List of Parameters
- Scan range: Skull vertex to aortic arch
- Slice thickness: 0.625 mm for razor-sharp images
- Contrast volume: 60–80 ml at 4–5 ml/s
- Radiation dose: <1 mSv (lower than a round-trip Delhi–Mumbai flight)
Why This Test
- Rule out acute stroke or brain haemorrhage
- Detect carotid stenosis before symptoms appear
- Evaluate arteriovenous malformations (AVMs)
- Assess traumatic vascular injury after accidents
When to Take Test
Benefits
Benefits of Taking the Test
- Speed: Entire study in 10–15 minutes
- Accuracy: 97 % sensitivity for aneurysms >2 mm
- Non-invasive: No catheter insertion into the groin
- Same-day reports: Digital access via Cadabams patient portal
Diseases Found Out Using CT Brain & Angiography
| Condition Detected | What the Scan Shows |
|---|---|
| Stroke | Clot or bleed location |
| Aneurysm | Bulging artery wall |
| Carotid stenosis | Narrowing percentage |
| AVM | Tangled vessels |
| Dissection | Tear in artery lining |
Preparing for test
- Fasting: 2–4 hours before scan (clear fluids allowed).
- Hydration: Drink 500 ml water the night before to protect kidneys.
- Clothing: Wear loose, metal-free attire; lockers provided.
11. Pre-requisites
- Recent creatinine report (within 4 weeks)
- List of current medications (esp. metformin)
- Pregnancy test if applicable
12. Best Time to Take the CT Brain & Angiography
- Emergency: Immediately after stroke symptoms
- Elective: Early morning slots (7 am–10 am) for faster contrast clearance and same-day reporting
13. Eligibility
- Age: 12 years and above
- Weight: Up to 150 kg on our wide-bore scanner
- Contraindications: Severe iodine allergy, pregnancy, uncontrolled hyperthyroidism
14. Procedure for Taking a CT Angiography Head and Neck
- Check-in at Cadabams Diagnostics—digital registration.
- IV line placed in the arm for contrast.
- Positioning—you lie head-first on the scanner table.
- Scout image confirms correct area.
- Contrast injection—warm feeling for 15–20 seconds.
- Scan—hold still for 5–7 seconds; machine is quiet.
- Observation—10-minute post-scan monitoring, then discharge.
15. Caution Before Taking the Test
- Discontinue metformin 48 hours prior if kidney function is borderline.
- Inform staff about shellfish or previous contrast reactions.
- Bring a companion if you have claustrophobia or mobility issues.
Test Results
Results and Interpretations
| Finding / Observation | Description | General Interpretation / Significance |
|---|---|---|
| Normal scan | No abnormalities detected | Indicates healthy brain tissue and blood vessels |
| Aneurysm detected | Bulging or ballooning of an artery wall | Risk of rupture; may require monitoring or intervention |
| Carotid stenosis | Narrowing of carotid artery by plaque | Increased stroke risk; may guide surgical or medical treatment |
| Stroke-related changes | Clot presence or brain tissue damage | Confirms ischemic or hemorrhagic stroke; urgent treatment needed |
| Arteriovenous malformation (AVM) | Abnormal tangling of vessels | Potential bleeding risk; may need further evaluation |
Risks & Limitations
Minimal Risks
- Radiation exposure is low with our modern low-dose protocols.
- Contrast allergy occurs in <1 % of cases; we screen and pre-medicate when needed.
Limitations
- Not ideal for very obese patients (>150 kg) with older CT tables.
- Cannot fully replace catheter angiography for tiny (<1 mm) vessel details.
5. Types of CT Angiography Head and Neck
- Standard CTA Head & Neck – entire carotid and vertebral system
- CT Brain Perfusion + Angiography – adds blood-flow maps in stroke work-up
- CT Venogram (CTV) – focuses on cerebral veins and sinuses
Cadabams offers all three on the same scanner platform.
FAQs
Does CT Brain & Angiography hurt?
No. The only discomfort is a small needle prick for the IV.
Can I drive home afterwards?
Yes, unless you were given sedation (rare).
Is the radiation safe?
Our protocols reduce dose by 30–50 % compared to standard settings.
How soon can I resume normal activities?
Immediately; drink extra fluids to flush the contrast.
What are the next steps after the test?
Your referring doctor is the most important person in your care journey. They will review the radiologist's report, discuss the findings with you, explain what they mean for your health, and recommend any necessary follow-up care, monitoring, or treatment plans. You may be referred to other specialists, such as a neurologist or neurosurgeon, depending on the results.