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CT Angiography Brain & Perfusion Study

This combined examination assesses both the blood vessels supplying your brain and the actual flow of blood reaching the brain tissue itself. The angiography portion uses injected contrast dye to produce detailed images of the arteries, revealing blockages, narrowing, aneurysms or malformations. The perfusion portion then tracks how that dye moves through the brain tissue, allowing the radiologist to identify areas already irreversibly damaged and, crucially, areas that are starving but still salvageable. This distinction is extremely important in acute stroke, where it directly determines whether clot-busting medication or mechanical clot removal is likely to help you. The study is also used to assess bleeding, vessel spasm after a haemorrhage, and unexplained neurological symptoms. Because timing is critical in stroke, this scan is often performed urgently

₹17,000
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Get Reports In

24 hours

Time Required

30 minutes

Body Part

BRAIN

Laterality

Midline

Do's

  • Fast for 4 hours before the scan (no solid food). You may drink plain water.
  • A blood test for kidney function (creatinine/eGFR) may be required specially if you are diabetic,kidney disease. Bring the report.
  • Inform the team of any prior contrast reactions, kidney impairment, thyroid disease, or allergies. • An IV cannula will be placed in your arm. • Drink 2 litres of water over the next 24 hours to flush the contrast dye. • Remove all jewellery from the neck, chest, and upper back.
  • Remove underwire bras -you will be asked to change into a gown,chest patches. • Breath-hold instructions are critical. The technologist will say;Breathe in and breathe and hold your breath,Practice this before the scan starts.

Don'ts

  • ⚠ Note: If you are on Metformin (or any metformin-containing combination tablet), you must STOP taking it on the day of the scan and for 48 hours after. Resume only after your doctor confirms kidney function is normal.

What is CT Angiography Brain & Perfusion Study

This combined examination assesses both the blood vessels supplying your brain and the actual flow of blood reaching the brain tissue itself. The angiography portion uses injected contrast dye to produce detailed images of the arteries, revealing blockages, narrowing, aneurysms or malformations. The perfusion portion then tracks how that dye moves through the brain tissue, allowing the radiologist to identify areas already irreversibly damaged and, crucially, areas that are starving but still salvageable. This distinction is extremely important in acute stroke, where it directly determines whether clot-busting medication or mechanical clot removal is likely to help you. The study is also used to assess bleeding, vessel spasm after a haemorrhage, and unexplained neurological symptoms. Because timing is critical in stroke, this scan is often performed urgently