Fig 2.

Dorsal contrast-enhanced FE 3D MPR T1 weighted images at the level of the tumour. The rostral is at the top; the right side is shown on the left of the image. (a) Pre-surgery: The contrast-enhanced meningioma can be easily delineated as a hyperintense (bright) structure at the left rostral brain. (b) Post surgery, no residual tumour can be seen. The defect is filled by material isointense to the brain (haemorrhage). The surgery site can be identified by the irregular structure of the masseter muscle and bone on the left side (compare with the muscle on the right side).