Fig. 2

a, b & c: Figure a demonstrates parenchymal enhancement in a Gliadel-treated region (shown by the arrow), and an adjacent subdural collection along the right falx in the T1 postcontrast sequence. Figure b demonstrates an enhancing nodule in the right periventricular region which correlated to new neurological symptoms. Axial tumor location measurements were performed targeting the TTFields to this specific lesion. Standard measurements were performed from a reference frame drawn at the outer margin of the scalp. Figure c represents the coronal slice selected for TTFields treatment planning. A reference frame is drawn at the level of the scalp, extending inferiorly to the lower margin of frontal lobe. At the clinician’s discretion, tumor location coordinates are determined for the area thought to represent active tumor (arrow)