Figure 1: A brain MRI image of one representative patient from this study, depicting a standard treatment plan for GBM. On the left is a T1, post-contrast MRI, showing a contrast-enhancing lesion in the left parietal lobe before surgery and before radiation therapy. The middle image shows the same patient’s treatment plan. The light blue line encompasses the contrast-enhancing lesion, and the orange line encompasses the non-contrast-enhancing lesion, as defined by T2 MRI. The red line represents the area that received the prescription dose of 60 Gy total. The right-most image shows the same patient 1 year after treatment.