Figure 15: ¹⁸F-FDG PET and corresponding CT images showing high-grade butterfly gliomas showing heterogeneous contrast enhancement extending in to bilateral cerebral hemisphere involving splenium. Top row axial section of (a) PET and (b) CECT, Bottom row coronal section of (c) PET and (d) CECT. ¹⁸F-FDG: ¹⁸fluoride-fluorodeoxyglucose, PET: Positron emission tomography, CT: Computed tomography, CECT: Contrast-enhanced CT