Table 2 Summary of phantom results for the two segmentation methods and the two PS realizations
| Â | Sphere 8Â cm3 | Sphere 16Â cm3 | Ovoid 29Â cm3 | Sphere 60Â cm3 (warm) | Sphere 60Â cm3 (cold) |
|---|---|---|---|---|---|
MS volume (cm3) | 8.2 | 15.6 | 29.8 | 61.6 | 61.6 |
PS volume (cm3)a | 9.4, 9.3 | 17.6, 17.4 | 28.7, 28.7 | 56.4, 56.4 | 61.7, 61.0 |
bPS vs MS | |||||
 DSC | 0.87 | 0.86 | 0.86 | 0.93 | 0.97 |
 MDA (mm) | 1.20 | 1.47 | 1.40 | 1.20 | 0.63 |
 ΔDMean (%) | − 4.7 | − 2.4 | 1.8 | 3.5 | 0.7 |
 ΔD70 (%) | − 7.7 | − 4.2 | 3.1 | 7.4 | 1.1 |
 ΔD90 (%) | − 7.5 | 0.8 | 4.5 | 8.3 | 3.0 |
PS1 vs PS2 | |||||
 DSC | 0.99 | 0.99 | 1.0 | 0.99 | 1.0 |
 MDA (mm) | 0.15 | 0.14 | 0.07 | 0.15 | 0.07 |
 ΔDMean (%) | 0.3 | 0.5 | 0.0 | − 0.1 | 0.6 |
 ΔD70 (%) | 0.5 | 0.9 | − 0.1 | − 0.1 | 1.3 |
 ΔD90(%) | 0.4 | 1.5 | − 0.1 | − 0.4 | 2.2 |