Table 3.
Data augmentations applied.
| Augmentation | Probability | Characteristics |
|---|---|---|
| Left-Right flip | 0.5 | – |
| Affine transformations | 0.3 | max scaling = 0.3; max rotation = 15° |
| Image anisotropy | 0.3 | can be applied along all axes; max down sampling factor = 2 |
| MRI motion artifact (Shaw et al., 2019) | 0.3 | max rotation = 15°; max translation = 15 mm; max number of movements = 2 |
| MRI ghosting artifacts | 0.3 | number of ghosts = 2; can be along all axis |
| MRI spike artifacts | 0.3 | number of spikes = 1; |
| MRI bias field | 0.3 | maximum magnitude = 0.5; polynomial order = 3 |
| Gaussian Noise | 0.3 | mean = 0; standard deviation = 1 |
| Contrast modification | 0.3 | log(gamma) = 0.3 |