A PET-CT scan is a nuclear medicine test of the whole body. It shows active tissue such as cancer, infection or inflammation. Typical effective dose 10 to 25 mSv, similar to about 3 to 8 years of natural background radiation (about 3 mSv a year).
General health information, not a diagnosis. In an emergency, call 102. Always consult a qualified health professional.
Active tissue such as cancer, infection or inflammation.
Cancer staging and response to treatment.
Fast 4 to 6 hours; diabetes needs special instructions about sugar and insulin; avoid hard exercise the day before.
Typical effective dose 10 to 25 mSv, similar to about 3 to 8 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.
2 to 3 hours. General information, not a diagnosis. Results must be interpreted by a qualified health worker.
Nuclear medicine
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.
What does a pet ct show?
Active tissue such as cancer, infection or inflammation.
Why is a pet ct done?
Cancer staging and response to treatment.
How do I prepare for a pet ct?
Fast 4 to 6 hours; diabetes needs special instructions about sugar and insulin; avoid hard exercise the day before.
Does a pet ct use radiation?
Typical effective dose 10 to 25 mSv, similar to about 3 to 8 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.
How long does a pet ct take?
2 to 3 hours
Why is PET-CT scan done?
Cancer staging and response to treatment.
How do I prepare for PET-CT scan?
Fast 4 to 6 hours; diabetes needs special instructions about sugar and insulin; avoid hard exercise the day before.
Is PET-CT scan safe in pregnancy?
Typical effective dose 10 to 25 mSv, similar to about 3 to 8 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.
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