Table 3.
(Abdomen): Comparison of IMPT, conventional MSC positioning (Conv), JDPO12, single-MSC MIP optimization (CPO-S), and multiple-MSC MIP optimization (CPO-M). The PVDR and Dmean values are calculated in 2D BEV slices indicated by green lines in Fig. 5(a).
| IMPT | Conv | JDPO | CPO-S | CPO-M | ||
|---|---|---|---|---|---|---|
| Target | Time (secs) | 205.30 | 505.08 | 382.63 | 607.18 | 591.42 |
| Dmax | 119.77% | 123.52% | 129.13% | 123.31% | 123.31% | |
| Large bowel | Dmax (Gy) | 23.55 | 23.81 | 25.66 | 24.16 | 24.16 |
| Dmean (Gy) | 0.97 | 0.87 | 1.15 | 0.87 | 0.87 | |
| Small bowel | Dmax (Gy) | 2.98 | 4.49 | 5.09 | 4.04 | 4.04 |
| Dmean (Gy) | 0.09 | 0.05 | 0.06 | 0.05 | 0.05 | |
| Body | Dmean (Gy) | 1.12 | 1.13 | 1.09 | 1.13 | 1.13 |
| PVDR (0º) | 6.18 | 13.06 | 14.95 | 12.78 | 12.78 | |
| PVDR (120º) | 5.24 | 11.54 | 11.28 | 11.73 | 11.73 | |
| PVDR (240º) | 6.48 | 8.16 | 9.13 | 8.11 | 8.11 |