Figure 4. Case 6.

A: Gd contrast-enhanced T1-weighted image

B: FLAIR (fluid-attenuated inversion recovery) image

C: [¹¹C]methionine positron emission tomography (MET-PET)

D: anti- [¹⁸F]FACBC positron emission tomography (FACBC-PET)

A 43-year-old man had well-enhanced irregular mass in the corpus callosum of the left frontal lobe in Gd T1-weighted image. The lesion invaded bilateral frontal lobes in FLAIR image. The diagnosis was glioblastoma, IDH mutant. Both MET and FACBC-PET showed high uptake in the tumor and wider area than enhancement lesion in Gd T1-weighted image and smaller than high signal lesion in FLAIR image. A clear margined tumor was depicted in FACBC-PET.