Doctors often scan at two points: before treatment, to plan it, and after a few cycles or at the end, to check the response. The first scan acts as a map, showing every active area. The later one shows what has shrunk, what has stayed and whether anything new has appeared. Comparing the two helps the team decide whether to continue, change or stop a treatment. Patients who have pet ct... https://amalaims.org/hospital/general-speciality/department/nuclear-medicine-and-pet