Summary of Target Volume Coverage in DIBH- or FB-Based Treatment Planning_
| TARGET VOLUME COVERAGE | DIBH | FB | ABSOLUTE DIFFERENCE | RELATIVE DIFFERENCE | p-VALUE | |
|---|---|---|---|---|---|---|
| V95% (%) | Median | 97 | 97 | 0 | 0 | 0.662492922 |
| Range | 88 | 88 | −0.6 | −0.621118012 | ||
| 99 | 99 | 0.4 | 0.421052632 | |||
| V90% (%) | Median | 98.5 | 99.1 | −0.8 | −1.204819277 | 0.139625473 |
| Range | 95 | 90.4 | −1.2 | −1.210898083 | ||
| 99.9 | 99.9 | 4.6 | 5.088495575 |
Summary of Dosimetric Findings of OAR Contralateral Lung between DIBH And FB Techniques of Irradiation_
| CONTRALATERAL LUNG VARIABLES | DIBH | FB | ABSOLUTE DIFFERENCE | RELATIVE DIFFERENCE | p-VALUE | |
|---|---|---|---|---|---|---|
| Max dose (cGy) | Median | 1578.45 | 1773 | −202.9 | −12.39397995 | 0.061554407 |
| Range | 470.6 | 460.3 | −875.9 | −34.09763314 | ||
| 2444.2 | 2741.8 | 146.3 | 11.40655106 | |||
| Mean dose (cGy) | Median | 229.8 | 321.85 | −63.75 | −20.52377012 | 0.032927742 |
| Range | 38 | 40.4 | −882.7 | −73.3505069 | ||
| 342 | 1203.4 | 56.4 | 20.35366294 |
Summary of Dosimetric Findings of OAR ( Organ at Risk) Heart Between DIBH and FB Techniques of Irradiation_
| HEART VARIABLES | DIBH | FB | ABSOLUTE DIFFERENCE | RELATIVE DIFFERENCE | p-VALUE | |
|---|---|---|---|---|---|---|
| Volume (ml) | Median | 520.5 | 537.95 | 18.15 | 3.18936175 | 0.622128586 |
| Range | 403.1 | 381.1 | −1076.5 | −72.75615031 | ||
| 681.7 | 1479.6 | 102.6 | 25.07331378 | |||
| Mean dose (cGy) | Median | 359.5 | 472.15 | −78.1 | −17.48974806 | 0.000218629 |
| Range | 79.7 | 97.4 | −235 | −43.63163758 | ||
| 755 | 805 | 22.4 | 17.63779528 | |||
| V2 Gy (%) | Median | 65.25 | 80.45 | −10.3 | −12.85026338 | 0.024153571 |
| Range | 17.37 | 33.1 | −34.3 | −66.00782779 | ||
| 95.7 | 100 | 4.1 | 4.475982533 | |||
| V5 Gy (%) | Median | 18.7 | 35.425 | −13.9 | −42.24616432 | 0.001596809 |
| Range | 1.2 | 6.78 | −35.5 | −86.26609442 | ||
| 63.5 | 67.7 | −2.3 | −5.793450882 | |||
| V10 Gy (%) | Median | 0.795 | 5.3 | −3.85 | −82.81993532 | 0.0001 |
| Range | 0 | 0.26 | −11.83 | −100 | ||
| 23.5 | 27.4 | 11.62 | 2472.340426 | |||
| V20 Gy (%) | Median | 0 | 0 | 0 | 0 | 0.193353996 |
| Range | 0 | 0 | −8.83 | −100 | ||
| 2.73 | 9.66 | 0.11 | 66.66666667 | |||
| V25 Gy (%) | Median | 0 | 0 | 0 | 0 | 0.088106998 |
| Range | 0 | 0 | −1.6 | −100 | ||
| 0.7 | 1.6 | 0.001 | 14.28571429 | |||
| Max dose (cGy) | Median | 1987 | 2930.3 | −796.1 | −32.19124322 | 0.000397958 |
| Range | 663.7 | 1503.5 | −1309 | −55.85633522 | ||
| 2657 | 3706 | −607.7 | −28.30545062 |
Summary of Dosimetric Findings of OAR Contralateral Breast Between DIBH and FB Techniques of Irradiation_
| CONTRALATERAL BREAST VARIABLES | DIBH | FB | ABSOLUTE DIFFERENCE | RELATIVE DIFFERENCE | p-VALUE | |
|---|---|---|---|---|---|---|
| Mean dose (cGy) | Median | 306.35 | 297.7 | −1.2 | −0.283243356 | 0.284999874 |
| Range | 31.9 | 26.8 | −148.6 | −49.30325149 | ||
| 448.2 | 506.6 | 89.4 | 101.6233766 | |||
| V5 Gy (%) | Median | 15.3 | 14.95 | −0.105 | −2.77459486 | 0.553793068 |
| Range | 0.25 | 0.01 | −17.4 | −68.99696049 | ||
| 32 | 36.5 | 15.9 | 2400 |
Summary of Dosimetric Findings of OAR Ipsilateral Lung between DIBH and FB Techniques of Irradiation_
| IPSILATERAL LUNG VARIABLES | DIBH | FB | ABSOLUTE DIFFERENCE | RELATIVE DIFFERENCE | p-VALUE | |
|---|---|---|---|---|---|---|
| Volume (ml) | Median | 1807.75 | 1005.95 | 741.8 | 72.93396796 | <0.0001 |
| Range | 951.9 | 605.4 | 22.3 | 1.868610692 | ||
| 2234.1 | 1344 | 1216 | 119.4381691 | |||
| Mean dose (cGy) | Median | 1191.4 | 1415.45 | −141.85 | −8.529702109 | 0.010001072 |
| Range | 774.1 | 926.3 | −572.9 | −42.5315516 | ||
| 1587 | 1725.8 | 50 | 3.253090436 | |||
| V5 Gy (%) | Median | 57.35 | 72.85 | −11.89 | −17.91653481 | <0.0001 |
| Range | 32.5 | 49.5 | −43.4 | −49.09502262 | ||
| 82.4 | 88.4 | 4.4 | 5.641025641 | |||
| V16 Gy (%) | Median | 21.265 | 32.7 | −9.15 | −31.35642415 | 0.000397958 |
| Range | 10.3 | 13.6 | −28.2 | −68.20987654 | ||
| 36.7 | 44.7 | 4.2 | 30.88235294 | |||
| V20 Gy (%) | Median | 19.315 | 25.05 | −6.11 | −26.41222344 | 0.00111909 |
| Range | 10.1 | 6.3 | −12.67 | −49.24623116 | ||
| 29.3 | 33.1 | 6.9 | 109.5238095 | |||
| Max dose (cGy) | Median | 4012.65 | 4569.35 | −429.55 | −10.24967229 | 0.002666834 |
| Range | 2924.6 | 3980.4 | −1401.8 | −31.27482082 | ||
| 5828.4 | 6184.8 | 4 | 0.099226037 |
Distribution of Patient and Treatment Characteristics_
| CHARACTERISTICS | NUMBER | PERCENTAGE (%) | |
|---|---|---|---|
| Clinical T stage | T1 | 0 | 0 |
| T2 | 9 | 45 | |
| T3 | 6 | 30 | |
| T4 | 5 | 25 | |
| Clinical N stage | N0 | 4 | 20 |
| N1 | 5 | 25 | |
| N2 | 7 | 35 | |
| N3 | 4 | 20 | |
| Composite stage | IIA | 3 | 15 |
| IIB | 4 | 20 | |
| IIIA | 5 | 25 | |
| IIIB | 4 | 20 | |
| IIIC | 4 | 20 | |
| Type of surgery | MRM | 18 | 90 |
| BCS + ALND | 2 | 10 | |
| Presence of implant | Yes | 9 | 45 |
| No | 11 | 55 | |
| Nodal irradiation | Axillary nodes | 13 | 65 |
| IMN nodes | 5 | 25 | |
| No nodal RT | 1 | 5 | |
| Radiation dose | 50 Gy in 25# | 12 | 60 |
| 40 Gy in 15# | 8 | 40 | |
| Tumor bed boost | Yes | 2 | 10 |
| No | 18 | 90 | |
| Radiation technique | VMAT | 10 | 50 |
| IMRT | 10 | 50 |
Summary of Dosimetric Findings of OAR Liver Between DIBH and FB Techniques of Irradiation_
| LIVER VARIABLES | DIBH | FB | ABSOLUTE DIFFERENCE | RELATIVE DIFFERENCE | p-VALUE | |
|---|---|---|---|---|---|---|
| Volume (ml) | Median | 1462.2 | 1318.45 | 153.8 | 9.552907368 | 0.046760925 |
| Range | 1066.9 | 1000.2 | −129.3 | −5.304615385 | ||
| 2308.2 | 2437.5 | 402.8 | 31.8948452 | |||
| Mean dose (cGy) | Median | 271.65 | 783.6 | −453.5 | −62.26498393 | <0.0001 |
| Range | 54.8 | 201.6 | −875.3 | −91.38674884 | ||
| 582.7 | 1344.7 | −146.8 | −38.69565217 | |||
| Max dose (cGy) | Median | 3952.35 | 4965.2 | −917.45 | −19.42725463 | 0.001022183 |
| Range | 1081.6 | 2984.5 | −3590.7 | −72.77167525 | ||
| 5765.1 | 6217.6 | −28.3 | −0.713835288 | |||
| V30 Gy Isodose (%) | Median | 0.885 | 3.405 | −2.48 | −68.82016467 | 0.00206989 |
| Range | 0 | 0 | −8 | −100 | ||
| 4.72 | 11.4 | 0.02 | 200 | |||
| V30 Gy Isodose (ml) | Median | 16.675 | 47.515 | −31.6 | −66.86010887 | 0.002253843 |
| Range | 0 | 0 | −109.38 | −100 | ||
| 70.3 | 179.68 | 0.3 | 150 | |||
| V10% isodose (%) | Median | 15.55 | 49.35 | −31.2 | −65.46855922 | <0.0001 |
| Range | 0.01 | 4.02 | −727 | −99.75124378 | ||
| 35.4 | 755.2 | −4.01 | −31.16062521 | |||
| V10% isodose (ml) | Median | 170.45 | 578 | −357.3 | −64.1423338 | <0.0001 |
| Range | 0.25 | 71.3 | −1180.5 | −99.64936886 | ||
| 575.1 | 1280.16 | 230.1 | 305.1724138 | |||
| V50% isodose (ml) | Median | 31.7 | 114.945 | −63.115 | −72.51538516 | <0.0001 |
| Range | 0 | 9.7 | −242.4 | −100 | ||
| 120 | 306.3 | 8.08 | 83.29896907 | |||
| V90% isodose (%) | Median | 0.045 | 0.625 | −0.285 | −89.94968553 | 0.000740489 |
| Range | 0 | 0 | −4.02 | −100 | ||
| 0.97 | 4.5 | 0 | 0 | |||
| V90% isodose (ml) | Median | 0.6 | 7.955 | −3.9955 | −89.38940265 | 0.000775787 |
| Range | 0 | 0 | −42.27 | −100 | ||
| 11.3 | 48.5 | 0 | 0 |