Table 2.
Visual analysis of cases where autosegmentation performance was reduced (DICE <0.92)
| Image or segmentation appearance associated with reduced algorithm performance | Internal Cross-Validation |
Clinical Validation |
|---|---|---|
| Number (%) | Number (%) | |
| Autosegmentation under or over segments liver-kidney border cysts | 5 (2.2) | 2 (4.2) |
| Partial autosegmentation of a single large kidney cyst | 3 (1.3) | 0 |
| Autosegmentation includes kidney tissue that is uncertain from visual analysis | 3 (1.3) | 0 |
| Autosegmentation includes renal pelvis | 0 | 1 (2.1) |
| Human segmentation error | 1 (0.4) | 0 |
| Autosegmentation is overly smooth between slices, does not follow sharply changing kidney geometry | 1 (0.4) | 0 |