Fig. 3

a, b & c: Figure a demonstrates lack of enhancing disease on an axial T1 postcontrast scan in a glioblastoma patient experiencing disease progression following 5 months of treatment with bevacizumab. Figures b shows the corresponding slice on the axial FLAIR sequence demonstrating significant FLAIR signal abnormality. As such, TTFields planning was performed on the FLAIR sequence. Measurements were obtained from a reference frame drawn at the level of the scalp in a standard manner, and measuring from the right frame to the near and far borders of the FLAIR signal abnormality. Figure c depicts mapping performed in the coronal plane to a corresponding area of hypodensity on the T1 postcontrast sequence. All measurements are obtained from a reference frame drawn at the level of the scalp, extending inferiorly to the lower margin of temporal lobe