After a few cycles of chemotherapy or a course of radiation, everyone wants to know if the treatment is working. A PET scan can show whether tumour activity has dropped, sometimes before the size changes on an ordinary scan. That helps the team decide whether to continue, change or stop the plan. The key is comparing new pictures with old ones, so keep every scan and report together. ... https://amalaims.org/hospital/general-speciality/department/nuclear-medicine-and-pet