Table 3. Comparisons of gamma passing rates between the films measured and the TPS dose maps for the small (s), medium (M), large (L) and total (T) IMRT plan fields.
The present method | Mike et al. method | |||||
---|---|---|---|---|---|---|
3%/3mm | 2%/2mm | 1%/1mm | 3%/3mm | 2%/2mm | 1%/1mm | |
Mean(S) ± SD | 99.9±0.2 | 98.5±1.8 | 86.2±7.5 | 99.9±0.2 | 98.3±2.0 | 82.9±11.1 |
Mean(M) ±SD | 98.9±1.8 | 96.5± 3.8 | 78.0± 11.3 | 98.7± 1.9 | 95.2± 5.4 | 72.5± 11.5 |
Mean(L) ± SD | 97.4± 2.6 | 92.8± 6.3 | 72.2± 11.1 | 95.4± 3.5 | 90.0± 4.3 | 64.4±8.2 |
Mean(T) ± SD | 98.7± 2.0 | 95.9± 4.8 | 78.8± 11.7 | 98.0± 2.9 | 94.5± 5.2 | 73.3± 12.4 |