| ATP | Adenosine triphosphate |
| BBB | Blood–brain barrier |
| CED | Convection enhanced delivery |
| [11C]Met | L-[methyl-11C]-methionine |
| CNS | Central Nervous System |
| CT | Computerized Tomography |
| [64Cu][CuCl2] | Copper chloride |
| [62Cu][Cu(ATSM)] | [62Cu]-diacetyl-bis(N4-methylthiosemicarbazone |
| DMG | Diffuse midline glioma |
| DOTA-TATE | DOTA-Tyr3-octreotate |
| DOTA-TOC | DOTA-Tyr3-octreotide |
| DOTA-NOC | DOTA-Nal3-octreotide |
| DOTA-SP | DOTA-[Thi8, Met(O2)11]-substance P |
| ECM | Extracellular matrix |
| EGFR | Epidermal growth factor receptor |
| [18F]DCFPyL | 2-(3-(1carboxy-5-(6-[18F]]fluoro-pyridine-3-carbonyl)-amino]-pentyl)-ureido)-pentanedioic acid |
| [18F]DOPA | 3,4-dihydroxy-6-[18F]-fluoro-L-phenylalanine |
| [18F]FAZA | [18F]fluoroazomycin arabinoside |
| [18F]FDG | [18F]2-fluoro-2-deoxy-D-glucose |
| [18F]FET | O-(2-[18F]-fluoroethyl)-L-tyrosine |
| [18F]FLT | 3′-deoxy-3′-[18F]fluorothymidine |
| [18F]FMISO | 1-(2-Nitro-imidazolyl)-3-[18F]fluoro-2-propanol |
| [18F]FRP-170 | 1-[2-[18F]Fluoro-1-(hydroxymethyl)-ethoxy]methyl-2-nitroimidazole |
| [68Ga]Ga-PSMA-11 | [68Ga]Ga-HBED-CC-PSMA |
| Gd | Gadolinium |
| GPCR | G-protein coupled receptor |
| HER2 | Human epidermal growth factor receptor 2 |
| HGG | High-grade glioma |
| HIFU | High-intensity focused ultrasound |
| IA | Intra-arterial |
| IHC | Immunohistochemistry |
| IV | Intravenous |
| LGG | Low-grade glioma |
| MRI | Magnetic Resonance Imaging |
| NK1-R | Transmembrane neurokinin type-1 receptor |
| [13N]NH3 | [13N]ammonia |
| NSCLC | Non-small cell lung cancer |
| OS | Overall survival |
| PDGFR | Platelet derived growth factor receptor |
| PD-L1 | Programmed death-ligand 1 |
| PET | Positron Emission Tomography |
| PFS | Progression free survival |
| ROI | Region of interest |
| PRRT | Peptide receptor radionuclide therapy |
| PSMA | Prostate-specific membrane antigen |
| RTK | Receptor tyrosine kinases |
| SPECT | Single-Photon Emission Computerized Tomography |
| SSTR2 | Somatostatin receptor 2 |
| SUV | Standardized uptake value |
| TBR | Tumor-to-background ratios |
| TfR1 | Transferrin receptor 1 |
| TK1 | Thymidine kinase 1 |
| TKI | Tyrosine kinase inhibitors |
| TSPO | Translocator protein |
| VEGF | Vascular endothelial growth factor |
| VEGFR | Vascular endothelial growth factor receptor |
| WHO | World Health Organization |