PET-CT combines metabolic imaging with CT anatomy so doctors can see both how tissue behaves and where it is located.
PET-CT is usually requested because of a known or suspected cancer, unexplained weight loss, a mass, persistent abnormal findings, or a need to see whether treatment is working.
It helps when doctors need both structural detail and information about metabolic activity, especially for staging cancer, checking treatment response, or looking for recurrence.
It is commonly used in oncology for staging, treatment response, and recurrence assessment.
The findings help guide cancer treatment decisions, but interpretation always depends on the clinical context and pathology history.
This entry explains the procedure. Before you go, read the longer prep guide or find a centre that performs it.
