Table 1.
Intraobserver and interobserver variability of manual segmentation and automatic segmentation evaluation results.
| Parameters (head) | Intraobserver variability-E1a | Intraobserver variability-E2a | Interobserver variability-E1 versus E2 | Our method () |
|---|---|---|---|---|
| Pre. (%) | 97.17% (1.58)b | 96.91% (1.28) | 93.90% (2.41) | 94.63% (1.71) |
| Acc. (%) | 99.61% (0.23) | 99.56% (0.18) | 99.14% (0.36) | 99.27% (0.26) |
| Sen. (%) | 98.10% (1.52) | 98.63% (1.01) | 94.76% (2.61) | 97.07% (2.30) |
| Spe. (%) | 99.85% (0.13) | 99.72% (0.26) | 99.86% (0.17) | 99.60% (0.25) |
| MSD (mm) | 1.32 (0.70) | 1.33 (0.53) | 2.40 (0.92) | 2.23 (0.74) |
| ASD (mm) | 0.44 (0.25) | 0.49 (0.20) | 0.98 (0.40) | 0.84 (0.28) |
| RMSD (mm) | 0.57 (0.30) | 0.60 (0.25) | 1.18 (0.47) | 1.05 (0.34) |
a
E1 = Expert 1; E2 =Expert 2.
b
Results are given as an average value (standard deviation) for each measure.