When battling cancer, doctors need two things: an exact map of the body, and an understanding of what the cells are doing. Enter the PET-CT scanner.
A Fusion of Two Technologies
A standard CT scan shows us the anatomy—the size, shape, and location of a tumor. But it can't always tell us if the tumor is alive, growing, or just leftover scar tissue from previous treatment.
A PET scan uses a special radioactive sugar (FDG). Cancer cells are naturally "hungry" and consume this sugar much faster than normal cells, causing them to light up brightly on the scan.
By fusing these two scans together at the exact same time, doctors can pinpoint precisely where the active cancer cells are hiding with millimeter accuracy.
This enables incredibly personalized treatment plans, letting oncologists know instantly whether chemotherapy is working or if surgery is required.