Tests
PET-CT scan
PET-CT scan
Combines metabolic activity and anatomical imaging.
Sources checked · Introductory guide
On this page
What does the test do?
PET uses a radioactive tracer and is often combined with CT.[1]
Understanding results
Increased tracer uptake does not always mean cancer.[1]
Before the test
Check fasting and diabetes instructions; report pregnancy or breastfeeding.[1]
Questions for your care team
- What are my eating and diabetes-medicine instructions before the scan?
Sources and scope
Source documents are in English.
Entries summarize and translate linked official public sources. The source-check date records when those sources were checked; it does not indicate a clinician’s review.
General information based on official public sources. This is not a complete list of uses or side effects. Individual treatment decisions require your care team and current source documents. US-source uses do not establish local approval or reimbursement.