<prompt> Gamma Rays Are used in which Diagnostic Modality ?FluoroscopyCT ScanMRIBone scan  <response>: Gamma Rays are used in Radioisotope studiesscintigraphy studies Bone scan is a radioisotope study done using Tc99m -MDP to detect skeletal metastasis Fluoroscopy and CT scan uses Xrays Radiowaves are used in MRI 