Measurements of FWHM Before and After DRC in Phantom Study
| Centimeters | ||||||
|---|---|---|---|---|---|---|
| 145 | 185 | 225 | 265 | 305 | ||
| DRC (−) | Central | 0.86 ± 0.04 | 0.91 ± 0.05 | 1.06 ± 0.07 | 1.24 ± 0.07 | 1.30 ± 0.08 |
| Radial | 1.02 ± 0.03 | 1.14 ± 0.05 | 1.23 ± 0.07 | 1.35 ± 0.10 | 1.50 ± 0.12 | |
| Tangential | 1.03 ± 0.03 | 1.16 ± 0.05 | 1.21 ± 0.07 | 1.27 ± 0.12 | 1.54 ± 0.18 | |
| DRC (+) | Central | 0.44 ± 0.01 | 0.54 ± 0.01 | 0.75 ± 0.02 | 0.80 ± 0.02 | 0.99 ± 0.02 |
| Radial | 0.54 ± 0.01 | 0.65 ± 0.02 | 0.82 ± 0.03 | 0.95 ± 0.02 | 1.16 ± 0.03 | |
| Tangential | 0.55 ± 0.01 | 0.66 ± 0.02 | 0.81 ± 0.03 | 1.06 ± 0.06 | 1.11 ± 0.06 | |