| FD | Fractal dimension |
| 3DFD | Three-dimensional fractal dimension |
| MRI | Magnetic resonance imaging |
| N | Naïve |
| ER | Expert registrar |
| EC | Expert consultant |
| NN | Naïve normal |
| NP | Naïve pathology |
| ECN | Expert consultant normal |
| ECP | Expert consultant pathology |
| ERN | Expert registrar normal |
| ERP | Expert registrar pathology |
| AUC | Area under curve |