The use of PET scan in glioblastoma multiforme

F-FDG) in the follow-up of patients sufferingfromglioblastomamultiforme[1].Theauthorsstudied28caseswith both FDG- and MET-PET, after their initial treatment;they found no correlation between tumoral uptake of eithertracer and survival. Furthermore, both PET tracers providedinconclusive results with reference to the discrimination be-tween tumor recurrence and radiation injury [ 1].ApartfromPET,conventionalfunctionalbrainimagingbysingle-photon emission computed tomography (SPECT) hasalso been evaluated in gliomas. Thallium-201 (