Brain tissue at risk during a stroke.
General health information, not a diagnosis. In an emergency, call 102. Always consult a qualified health professional.
Brain tissue at risk during a stroke. What it shows: Brain tissue at risk during a stroke. generated by SI from cited sources · general information, not a diagnosis · consult a health professional
Brain tissue at risk during a stroke.
Acute stroke treatment decisions.
Remove metal objects. If contrast is used you may need to fast for a few hours; tell staff about allergies, kidney disease, diabetes medicines (metformin) or pregnancy.
Typical effective dose 2 to 5 mSv, similar to about 8 months to 1.5 years of natural background radiation (about 3 mSv a year). Tell staff if you are or might be pregnant; the benefit usually outweighs the small risk, and shielding or alternatives can be considered.
5 minutes. General information, not a diagnosis. Results must be interpreted by a qualified health worker.
Consult a doctor to interpret results — a single test does not make a diagnosis.
Uses your location once to list the nearest facilities. Nothing is stored.
Why is CT perfusion of the brain done?
Acute stroke treatment decisions.
How do I prepare for CT perfusion of the brain?
Remove metal objects. If contrast is used you may need to fast for a few hours; tell staff about allergies, kidney disease, diabetes medicines (metformin) or pregnancy.
Is CT perfusion of the brain safe in pregnancy?
Typical effective dose 2 to 5 mSv, similar to about 8 months to 1.5 years of natural background radiation (about 3 mSv a year). Tell staff if you are or might be pregnant; the benefit usually outweighs the small risk, and shielding or alternatives can be considered.
SI text CC BY 4.0; RadiologyInfo.org (ACR/RSNA) and MedlinePlus linked as references only, no text copied.