Table 4.
Dosimetric evaluation of the IPSL and heart to left breast cancer patients between the SEB-HFWBI and SIB-HFWBI plans in the same position (mean).
| Parameters | SEB-HFWBI | SIB-HFWBI | T-value | P-value |
|---|---|---|---|---|
| Ipsilateral lung supine | ||||
| V5 (%) | 31.52 ± 5.64 | 30.91 ± 5.65 | 4.479 | 0.000 |
| V10 (%) | 22.71 ± 5.46 | 22.45 ± 5.47 | 6.632 | 0.000 |
| V20 (%) | 18.20 ± 5.21 | 18.06 ± 5.22 | 5.771 | 0.000 |
| V30 (%) | 15.11 ± 4.99 | 14.89 ± 5.02 | 7.550 | 0.000 |
| V40 (%) | 6.16 ± 3.83 | 4.41 ± 3.28 | 9.766 | 0.000 |
| Dmean (Gy) | 9.24 ± 1.98 | 8.96 ± 1.93 | 9.251 | 0.000 |
| Prone | ||||
| V5 (%) | 13.12 ± 6.95 | 12.76 ± 6.89 | 4.479 | 0.000 |
| V10 (%) | 8.70 ± 5.88 | 8.54 ± 5.83 | 6.632 | 0.000 |
| V20 (%) | 5.10 ± 3.95 | 4.89 ± 3.86 | 5.771 | 0.000 |
| V30 (%) | 3.15 ± 2.83 | 3.00 ± 2.76 | 7.550 | 0.000 |
| V40 (%) | 1.28 ± 1.55 | 0.79 ± 1.23 | 9.766 | 0.000 |
| Dmean (Gy) | 3.57 ± 1.81 | 3.42 ± 1.74 | 9.251 | 0.000 |
| Heart in left-sided patients supine | ||||
| Dmean (Gy) | 5.38 ± 2.07 | 5.29 ± 2.06 | 4.752 | 0.000 |
| V5 (%) | 16.18 ± 6.46 | 15.88 ± 6.38 | 4.364 | 0.001 |
| V10 (%) | 11.98 ± 5.60 | 11.90 ± 5.60 | 3.294 | 0.006 |
| V20 (%) | 9.70 ± 5.06 | 9.65 ± 5.09 | 2.270 | 0.041 |
| V30 (%) | 7.94 ± 4.53 | 7.89 ± 4.54 | 2.876 | 0.013 |
| V40 (%) | 2.88 ± 1.91 | 2.33 ± 1.75 | 4.125 | 0.001 |
| Prone | ||||
| Dmean (Gy) | 5.20 ± 2.30 | 5.04 ± 2.26 | 4.734 | 0.000 |
| V5 (%) | 18.10 ± 9.00 | 17.71 ± 8.91 | 5.498 | 0.000 |
| V10 (%) | 13.34 ± 8.21 | 13.18 ± 8.16 | 4.112 | 0.000 |
| V20 (%) | 9.10 ± 5.67 | 8.88 ± 5.57 | 3.231 | 0.003 |
| V30 (%) | 5.06 ± 3.69 | 4.91 ± 3.62 | 4.380 | 0.001 |
| V40 (%) | 2.22 ± 2.09 | 1.73 ± 1.75 | 2.902 | 0.012 |
SIB simultaneous integrated boost, SEB sequential integrated boost, HFWBI hypofractionated whole-breast irradiation, V5 the volumes that received ≥ 5 Gy, V10 the volumes that received ≥ 10 Gy, V20 the volumes that received ≥ 20 Gy, V30 the volumes that received ≥ 30 Gy, V40 the volumes that received ≥ 40 Gy, Dmean the mean dose.