DOPPLER - CAROTID & VERTEBRAL ULTRASOUND SCAN
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Certified Labs
NABH Accredited
Reports in
6hrs
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About The Test
A quick, painless neck scan could save your life. The DOPPLER - CAROTID & VERTEBRAL ULTRASOUND SCAN uses sound waves to map blood flow in the arteries that feed your brain, spotting narrowings or blockages before they trigger a stroke. At Cadabams Diagnostics, we combine high-resolution imaging technology with compassionate care, giving you and your doctor the clarity to act early—and confidently.
What Is a Doppler Carotid & Vertebral Ultrasound Scan?
Definition and Technology Behind Doppler Ultrasound
A Doppler ultrasound is a non-invasive test that bounces high-frequency sound waves off red-blood cells to create real-time pictures of blood movement. When the scan focuses on the carotid and vertebral arteries in your neck, it reveals:
- Speed and direction of blood flow
- Artery wall thickness
- Presence, size, and texture of plaque
Difference Between Standard Ultrasound and Doppler Imaging
Feature | Standard Ultrasound | Doppler Ultrasound |
---|---|---|
Shows structure | ✅ | ✅ |
Shows blood flow | ❌ | ✅ |
Color-coded flow maps | ❌ | ✅ (Color & Power Doppler) |
Velocity measurement | ❌ | ✅ (Spectral Doppler) |
Types of Doppler Carotid & Vertebral Ultrasound
- Color Doppler – overlays color maps on arteries to show speed and direction.
- Power Doppler – more sensitive for detecting low-flow states and small vessels.
- Spectral Doppler – produces a waveform graph to measure exact velocities.
List of Parameters
Parameter | What It Tells Us |
---|---|
Peak Systolic Velocity (PSV) | Indicates how fast blood spurts during heartbeats; high values suggest narrowing. |
End-Diastolic Velocity (EDV) | Shows residual flow when the heart relaxes; low flow may signal severe blockage. |
Carotid Intima-Media Thickness (CIMT) | Early marker of atherosclerosis; thicker walls = higher risk. |
Plaque Morphology & Degree of Stenosis | Reveals whether plaque is soft, calcified, or ulcerated and how much it blocks the artery. |
Why This Test
- Screening for stroke risk before symptoms appear.
- Follow-up after a transient ischemic attack (TIA) or mini-stroke.
- Pre-operative check before heart or major vascular surgery.
- Monitoring known carotid disease progression.
When to Take Test
Common Symptoms Prompting Referral
- Sudden weakness or numbness on one side of the body
- Brief vision loss or double vision
- Slurred speech or difficulty finding words
- Dizziness or unsteadiness with no clear cause
High-Risk Groups
- Hypertension (high blood pressure)
- Smokers (current or recent)
- Diabetes (Type 1 or Type 2)
- Adults over 50 with any cardiovascular risk factor
- Family history of stroke or heart disease
Benefits
Benefits of the Doppler Carotid & Vertebral Ultrasound
- Early detection of blockages or narrowing—often years before symptoms.
- Prevents stroke through timely lifestyle changes or procedures.
- Zero downtime—return to work or home immediately.
- Affordable and widely covered by insurance plans.
Illnesses Diagnosed
- Carotid artery stenosis
- Vertebral artery insufficiency
- Atherosclerotic plaque (soft, mixed, or calcified)
- Arterial dissection (tear in artery wall)
- Subclavian steal syndrome
Preparing for test
- Clothing: Wear a loose collar or button-up shirt that opens easily at the neck.
- Fasting: Not required—enjoy your breakfast.
- Medications: Continue all prescribed drugs unless your doctor says otherwise.
- Jewelry: Remove necklaces and heavy earrings.
Pre-Requisites
- A doctor’s prescription or referral (walk-ins accepted for follow-up scans).
- Valid ID and any previous scan reports for comparison.
Best Time to Book
- Morning slots are ideal for elderly or diabetic patients.
- Within 48 hours of a TIA or stroke-like symptoms for urgent evaluation.
Eligibility
- Adults 30+ with any cardiovascular risk factor.
- Pediatric cases only under specialist referral (rare).
Step-by-Step Procedure
- Check-in at reception—total visit time ~30 minutes.
- Positioning: Lie on an exam bed with your neck gently extended.
- Gel Application: Warm gel is spread along both sides of your neck.
- Transducer Movement: The sonographer glides a handheld probe, capturing images and sounds.
- Completion: Wipe off gel, review preliminary images with you, and schedule a follow-up if needed.
Caution Before Taking the Test
- Avoid wearing neck jewelry—it interferes with probe contact.
- Inform the sonographer about prior neck surgery, radiation, or stents.
Test Results
Results and Interpretations
Finding / Observation | Description | General Interpretation / Significance |
---|---|---|
Normal flow velocities | PSV <125 cm/s, no plaque | Low stroke risk |
Mild stenosis | PSV 125–230 cm/s; plaque <50% blockage | Lifestyle changes advised |
Moderate stenosis | PSV 230–340 cm/s; 50–69% blockage | Medical therapy, repeat scan in 6–12 months |
Severe stenosis | PSV >340 cm/s; >70% blockage | Referral to vascular specialist |
Ulcerated plaque | Jagged surface on imaging | Higher embolic risk; urgent review | Result reports are shared the same day via secure email or printed copy. |
Risks & Limitations
Non-Invasive—No Radiation or Contrast Risks
- No needles, no dyes, no X-rays.
- Safe for pregnant women and kidney patients.
Limitations to Keep in Mind
- Obesity can reduce image clarity.
- Severe arterial calcification may hide parts of the artery wall.
- Cannot image arteries deep inside the skull (for that, other scans are needed).
FAQs
Is the scan painful?
No. You may feel slight pressure from the probe, but no pain.
How soon will I get results?
Preliminary findings are discussed immediately; full report within 2–4 hours.
Can I drive home after the scan?
Yes. There are no sedatives or restrictions.
Do I need to stop blood thinners
No. Continue all medications unless instructed otherwise.
What happens if a blockage is found?*
Your doctor will discuss lifestyle changes, medications, or referral to a vascular specialist.
Is this test covered by insurance?
Most policies cover it under preventive or diagnostic benefits—check with your provider.