A2;3;4	astrocytoma grade 2;3;4
ADC	apparent diffusion coefficient
BBB	blood–brain barrier
BTV	biological tumor volume
CNS	central nervous system
CT	computer tomography
DWI	Diffusion-weighted imaging
E3	Ependymoma grade 3
EANO	European Association of Neuro-oncology
ETMR	Embryonal tumor with multilayer rosettes
FDG	fluoro-deoxy-glucose
FDOPA	6-[18F]-L-fluoro-L-3, 4-dihydroxyphenylalanine
FET	O-(2-[18F]fluoroethyl)-L-tyrosine
FLAIR	fluid-attenuated inversion recovery
GBM	glioblastoma
MET	L-[11C]methyl-methionine
MRI	magnetic resonance imaging
MRS	magnetic resonance spectroscopy
NCCN	National Comprehensive Cancer Network
O2;3	Oligodendroglioma grade 2;3
OSEM	ordered subset expectation maximization
PBL	Bayesian penalized likelihood
PET	positron emission tomography
PWI	perfusion-weighted imaging
rCBV	relative cerebral blood volume
TBR	tumor brain ratio
TOF	time of flight