Parameter | The A method | The AD method | The ADS method |
---|---|---|---|
Uniformity (normalized SD, 0.1) | 0.207 (±0.007) | 0.209 (±0.007) | 0.190 (±0.006) |
Robustness R (normalized SD, 0.1) | 0.153 (±0.005) | 0.153 (±0.005) | 0.136 (±0.004) |
Data in parentheses are SDs. For robustness, the smaller the value, the more robust was the algorithm to anatomic variations. Monte Carlo–based reconstruction method (ADS) clearly outperforms the other 2 methods (A and AD) in terms of robustness and uniformity.