Observational study of research MRI and CT scans in people having radiation therapy and healthy volunteers

Magnetic resonance imaging (MRI) is currently one of the standard diagnostic imaging methods used to diagnose tumor stage before treatment in the Radiation Oncology Department. It is also used to check responses to radiation after treatment. However, MRI isn't traditionally used in planning for radiation treatment or in checking treated tumor and tissue changes during radiation treatment. The goal is to find out the possible benefits of MRI imaging techniques in these settings of radiation treatment. The research aims are to study the possibility of using devices with new abilities such as the MR-Linac. The MR-Linac combines a radiation treatment machine with a diagnostic MRI scanner. This device will improve the quality of MRI-guided radiation treatment. The MR-Linac has functions that are currently not available in other combined imaging and radiation delivery devices. The MR-Linac does not provide additional imaging capabilities that are not currently available in other imaging devices.

Participating in this study would NOT change the current treatment plans, this will allow the investigators to use the MRI methods in research and future patient care.