Comparative Utilization Analysis of Radiation Modalities Among Adults with Primary Brain Tumors in the United States from 2004 to 2015

External beam radiotherapy (EBRT) and stereotactic radiosurgery (SRS) are the main radiation modalities for adults with primary brain tumors (APBT). Since the early 2000s, new technologies such as intensity-modulated radiotherapy (IMRT), and most recently, proton beam therapy (PBT) have been commercialized for the treatment of these lesions. We sought to characterize the radiation treatment modality utilization trends over an 11-year period in a...