Blood Clot in Brain: CT Scan Insights
Learn how a CT scan helps detect brain blood clots early and accurately. Discover symptoms, causes, treatment options, and preventive steps to protect brain health.
Written by Dr. Shaik Abdul Kalam
Reviewed by Dr. Dhankecha Mayank Dineshbhai MBBS
Last updated on 8th Aug, 2025
A blood clot in the brain is a serious medical condition that requires immediate attention. It can lead to life-threatening complications if not treated promptly. A CT scan (Computed Tomography scan) is one of the most effective ways to detect a brain clot early, helping doctors take quick action.
In this article, we’ll discuss what a brain blood clot is, its symptoms, causes, and how a CT scan helps in diagnosis and treatment. We’ll also share some preventive measures and when to seek medical help.
What is a Blood Clot in the Brain?
A blood clot in the brain, also known as a cerebral thrombosis or stroke (if it blocks blood flow), occurs when a clot forms inside a blood vessel, restricting oxygen and nutrients from reaching brain cells. This can lead to brain damage or even death if not treated quickly.
Types of Brain Blood Clots:
1. Ischemic Stroke – Caused by a clot blocking a blood vessel in the brain.
2. Hemorrhagic Stroke – Caused by a burst blood vessel leading to bleeding in the brain.
3. Cerebral Venous Sinus Thrombosis (CVST) – A rare type where a clot forms in the brain’s venous sinuses.
Symptoms of a Blood Clot in the Brain
Recognising the symptoms early can save lives. Common signs include:
- Sudden severe headache (often described as the "worst headache ever")
- Weakness or numbness on one side of the body (face, arm, or leg)
- Difficulty speaking or understanding speech
- Vision problems (blurred or double vision)
- Loss of balance or coordination
- Confusion or dizziness
- Seizures (in some cases)
If you or someone around you experiences these symptoms, seek emergency medical help immediately.
Causes and Risk Factors
Several factors can increase the risk of a brain blood clot:
- High blood pressure (Hypertension) – Weakens blood vessels over time.
- Heart disease or irregular heartbeat (Atrial Fibrillation) – Increases the risk of clot formation.
- Diabetes – Affects blood vessel health.
- Smoking and excessive alcohol – Damages blood vessels.
- Obesity and sedentary lifestyle – Increases clotrisks.
- Family history of strokes or clotting disorders
- Head injuries or trauma – Can lead to bleeding or clots.
How a CT Scan Helps Detect a Brain Blood Clot
A CT scan is a quick, painless imaging test that uses X-rays to create detailed pictures of the brain. It helps doctors:
- Identify the exact location and size of the clot
- Determine if the stroke is ischemic (blockage) or hemorrhagic (bleeding)
- Rule out other conditions like tumours or infections
- Guide emergency treatment decisions
What to Expect During a CT Scan?
- You’ll lie on a table that slides into a doughnut-shaped scanner.
- The scan takes only a few minutes and is painless.
- In some cases, a contrast dye may be injected to get clearer images.
Consult a Top Physician For More Health Benefits
Treatment Options for Brain Blood Clots
Treatment depends on the type of clot:
1. For Ischemic Stroke (Blockage)
- Clot-busting drugs (Thrombolytics like tPA) – Given within 4.5 hours of symptoms.
- Mechanical Thrombectomy – A procedure to remove the clot using a catheter.
2. For Hemorrhagic Stroke (Bleeding)
- Surgery – To repair the burst blood vessel or relieve pressure.
- Medications – To control blood pressure and prevent further bleeding.
3. For CVST (Venous Clot)
- Blood thinners (Anticoagulants) – To prevent further clotting.
Prevention and Lifestyle Tips
While some risk factors (like genetics) can’t be changed, you can reduce your risk by:
- Controlling blood pressure – Regular check-ups and medication if needed.
- Eating a heart-healthy diet – More fruits, vegetables, whole grains, and less salt/fat.
- Staying active – At least 30 minutes of exercise daily.
- Quitting smoking and limiting alcohol
- Managing diabetes and cholesterol levels
- Staying hydrated – Helps prevent blood from thickening.
When to See a Doctor?
If you experience a sudden, severe headache, weakness, speech difficulties, or vision problems, do not wait; rush to the nearest emergency room. Early treatment can prevent permanent brain damage.
For those at high risk (history of strokes, heart disease, or clotting disorders), regular check-ups and preventive scans may be recommended.
Need a CT Scan or Expert Consultation?
If you suspect any symptoms or want a preventive check-up, you can book a CT scan or consult a neurologist through Apollo 24|7 for quick and reliable diagnosis.
Final Thoughts
A blood clot in the brain is a medical emergency, but timely detection and treatment can save lives. Knowing the symptoms and risk factors can help you act fast. Stay proactive about your health, follow preventive measures, and seek medical advice when needed.
Consult a Top Physician For More Health Benefits
Consult a Top Physician For More Health Benefits
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General Practitioner
7 Years • MBBS
Hyderabad
Apollo 24|7 Clinic, Hyderabad
Dr D M Karthik
General Practitioner
4 Years • MBBS, Fellowship in Diabetes Mellitus, Advance certificate in Diabetes Mellitus, Derma Nutrition Certification
Visakhapatnam
Apollo 24|7 Clinic - Andhra Pradesh, Visakhapatnam
Dr Divya Lekha Gunta
General Practitioner
10 Years • MBBS, MD (Pathology)
Visakhapatnam
Apollo 24|7 Clinic - Andhra Pradesh, Visakhapatnam
Dr. Mohammed Kamran
General Practitioner
5 Years • MBBS, FIDM
Nashik
Apollo 24|7 Clinic - Maharashtra, Nashik
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General Practitioner
9 Years • MBBS
Chennai
Apollo 24|7 Clinic - Tamilnadu, Chennai
(275+ Patients)
