At the beginning of each treatment session, your radiation therapist will position you on the treatment table. Scans will be taken to make sure your body is properly positioned. We may take more images or move you again during your treatment sessions to guide where the radiation will be delivered. IGRT sessions may take a bit longer than other types of radiation treatments because of the time needed to collect and view the scans. Our specialists use imaging technologies such as PET, MRI, and CT both before and during IGRT to more precisely and safely map the location of the cancer. For some IGRT procedures, small dots called fiducial markers — which are made of gold, plastic, or another material — may be placed in the body within or near the tumor to help your treatment team locate the cancer. Your skin may also be marked to help align the equipment that delivers the radiation. Over the course of your therapy, we will use imaging technologies to continually monitor and adapt to changes that may be occurring in your tumor, such as shrinkage, growth, or changes in shape.