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A: A PET/CT test helps diagnose cancer and gives more information, including whether a tumor is benign or malignant, whether the cancer cells are active or dead.

A: A PET scan reveals energy changes at a cellular level. It allows to detect small cancers, differentiate between benign and malignant tumors, and allows precise staging. CT or MRI detects anatomy organ or tissue changes that occur later with more advanced disease.

A: A scan is not painful, but patients should not consume any food for at least 4 to 6 hours before a scan.

A: It takes one hour 1 hour for the radiotracer to travel throughout the body and be absorbed into the organs or tissues being examined.