F-18 FDG PET and C-11 MET PET findings in patients with five miscellaneous brain tumors

There are few papers comparing FDG and MET uptake in miscellaneous brain tumors. In the present study, we demonstrated both PET studies of five patients with untreated brain tumors (gemistocytic astrocytoma, tanycytic ependymoma, astroblastoma, gliomatosis cerebri and medulloblastoma). The results show more marked MET uptake into the tumors compared with FDG. As MET PET has an advantage for FDG in delineation of tumor margins, it will be a more promising method to evaluate biological behavior and for instructing surgical procedure or radiotherapy in various brain tumors.