| Dice similarity coefficient | ||||
---|---|---|---|---|---|
Approach Target | nnU-Net - PET | nnU-Net -PET/CT | Proposed method - PET | Proposed method - PET/CT (without SSL pre-raining) | Proposed method - PET/CT (SSL pre-training + fine-tuning) |
Lacrimal glands | 0.75 | 0.78 | 0.74 | 0.80 | 0.83 |
Parotid glands | 0.86 | 0.88 | 0.87 | 0.88 | 0.91 |
Tubarial glands | 0.68 | 0.69 | 0.70 | 0.70 | 0.75 |
Sublingual glands | 0.52 | 0.68 | 0.70 | 0.73 | 0.77 |
Submandibular glands | 0.81 | 0.85 | 0.84 | 0.85 | 0.88 |
Spleen | 0.79 | 0.85 | 0.82 | 0.88 | 0.90 |
Liver | 0.88 | 0.91 | 0.88 | 0.93 | 0.95 |
Bowel | 0.71 | 0.75 | 0.73 | 0.76 | 0.81 |
Kidneys | 0.80 | 0.85 | 0.80 | 0.87 | 0.89 |
Bladder | 0.81 | 0.83 | 0.78 | 0.83 | 0.86 |
Lesions | 0.55 | 0.61 | 0.57 | 0.65 | 0.68 |
Mean | 0.75 | 0.79 | 0.77 | 0.81 | 0.84 |