Fig. 6

a, b & c demonstrate treatment planning in a patient with exclusively nonmeasurable disease: Figure a is the axial T1 post-contrast slice demonstrating no contrast enhancement. Figure b is the corresponding axial FLAIR sequence was used to map the tumor coordinates. A reference frame is drawn around the level of the scalp and tumor location coordinates are obtained from the right framebased on the extent of abnormal T2 signal. Figure c depicts the coronal treatment planning utilizing the T1 post-contrast sequence. The area of FLAIR signal abnormality corresponds with an area of T1 hypointensity on the coronal sequence. Treatment is planned to the boundaries of the T1 hypointensity at the treating physician’s discretion. Tumor location coordinates are obtained in a standard fashion from a reference drawn at the level of the scalp. The reference frame encompasses all of the supratentorial brain so the lower boundary is extended to the inferior margin of temporal lobe in this slice