Table 3.
The average, standard deviation (in parenthesis in the first column) and root-mean-square error of the mean thickness difference (Δtmean), maximum thickness difference (Δtmax) and wall area difference (ΔWA) associated with four methods as compared to the gold standard (i.e., first manual segmentation, M1). M2 represents the second manual segmentation. SB1, SB2, SA0, and SA5 boundaries generated by semiautomatic segmentation methods (see caption of Table TABLE II.). tmean and tmax are expressed in mm and WA is expressed in mm2.
| Δtmean | RMSE(tmean) | |
|---|---|---|
| M2 | 0.197 (0.260) | 0.326 |
| SB1 | 0.224 (0.339) | 0.406 |
| SB2 | 0.229 (0.363) | 0.429 |
| SA0 | 0.225 (0.261) | 0.345 |
| SA5 | 0.233 (0.256) | 0.347 |
| Δtmax | RMSE(tmax) | |
| M2 | 0.273 (0.555) | 0.619 |
| SB1 | 0.389 (0.623) | 0.735 |
| SB2 | 0.395 (0.670) | 0.778 |
| SA0 | 0.434 (0.541) | 0.693 |
| SA5 | 0.364 (0.491) | 0.611 |
| ΔWA | RMSE(WA) | |
| M2 | 4.40 (4.92) | 6.60 |
| SB1 | 4.58 (7.10) | 8.45 |
| SB2 | 4.50 (7.46) | 8.71 |
| SA0 | 4.74 (5.29) | 7.11 |
| SA5 | 4.76 (5.46) | 7.25 |