| SUV | Standardized Uptake Value |
| PCA | Principal Component Analysis |
| DSC | Dice Similarity Coefficient |
| AUC | Area Under the ROC Curve |
| ROC | Receiver Operating Characteristic |
| GCA | Giant Cell Arteritis |
| LVV | Large Vessel Vasculitis |
| FDG PET-CT | [18F]-Fluorodeoxyglucose Positron Emission Tomography—Computed |
| Tomography | |
| FDG | [18F]-Fluorodeoxyglucose |
| PET | Positron Emission Tomography |
| CT | Computed Tomography |
| GLDM | Gray-Level Dependence Matrix |
| GLCM | Gray-Level Co-Occurrence Matrix |
| GLRLM | Gray-Level Run Length Matrix |
| GLSZM | Gray-Level Size Zone Matrix |
| DLYD | Delayed Event Subtraction |
| TAK | Takayasu’s arteritis |
| CRP | C-Reactive Protein |
| ESR | Erythrocyte Sedimentation Rate |
| ML | Machine Learning |
| DL | Deep Learning |
| DICOM | Digital Imaging and Communications in Medicine |
| GPU | Graphics Processing Unit |
| PITA | PET Imaging of Giant Cell and Takayasu Arteritis |
| TARGET | Treatment According to Response in Giant Cell arTeritis |
| CNN | Convolutional Neural Network |
| EULAR | European Alliance of Associations for Rheumatology |
| EANM | European Association of Nuclear Medicine |
| SNMMI | Society of Nuclear Medicine and Molecular Imaging |
| ReLU | Rectified Linear Unit |
| AI | Artificial Intelligence |
| ROI | Region of Interest |
| IBSI | International Biomarker Standardisation Initiative |
| PACS | Picture Archiving and Communication |
| VPFX | Vue Point FX (3D time of flight) |
| SS-SIMUL | Single-scatter Simulation |
| BLOB-OS-TF | Spherically symmetric basis function ordered subset algorithm |