Table 1.
Mean volume ± standard deviation (sd) in milliliter for each delineated volume on all scans.
| BH | RBH | FTBH | |||||
|---|---|---|---|---|---|---|---|
| Volume (ml) ± sd | Volume (ml) ± sd | T-statistic | P-value | Volume (ml) ± sd | T-statistic | P-value | |
| CTV WBI | 484.59 ± 347.02 | 456.74 ± 298.29 | 0.841 | 0.411 | 455.62 ± 298.56 | 0.862 | 0.399 |
| LNN I | 119.23 ± 57.08 | 119.68 ± 57.34 | − 1.321 | 0.202 | 117.96 ± 56.88 | 0.456 | 0.654 |
| LNN II | 16.22 ± 7.25 | 15.90 ± 7.36 | 1.843 | 0.081 | 18.02 ± 7.74 * | − 3.834 | 0.001 |
| LNN III | 14.02 ± 4.64 | 14.05 ± 4.62 | − 0.278 | 0.784 | 13.73 ± 4.19 | 0.372 | 0.714 |
| LNN IV | 12.35 ± 3.20 | 12.41 ± 3.18 | − 0.495 | 0.526 | 13.11 ± 2.63 | − 1.434 | 0.168 |
| LNN MI | 7.62 ± 3.00 | 7.59 ± 2.65 | 0.251 | 0.805 | 8.42 ± 2.32 | − 1.486 | 0.154 |
| Heart | 604.68 ± 73.64 | 602.29 ± 76.84 | 0.789 | 0.440 | 648.03 ± 100.18 | − 4.799 | < 0.001 |
| LAD | 3.98 ± 1.77 | 4.02 ± 1.66 | − 0.553 | 0.587 | 3.80 ± 1.72 | 0.649 | 0.524 |
| Left Lung | 2313.95 ± 473.40 | 2275.19 ± 458.07 | 2.198 | 0.041 | 1562.78 ± 365.86 | 13.114 | < 0.001 |
| Right Lung | 2634.98 ± 458.17 | 2516.19 ± 472.28 | 4.177 | 0.001 | 1875.46 ± 394.72 | 13.069 | < 0.001 |
| Esophagus | 32.16 ± 14.55 | 31.11 ± 12.34 | 1.130 | 0.273 | 29.94 ± 12.20 | 1.344 | 0.195 |
| Thyroid | 17.28 ± 15.20 | 16.69 ± 15.59 | 0.795 | 0.437 | 16.39 ± 14.67 | 1.165 | 0.258 |
|
Contralat breast |
606.14 ± 359.42 | 606.286 ± 359.73 | − 0.638 | 0.531 | 618.80 ± 369.03 | − 3.073 | 0.006 |
Tests report comparisons of either FTBH or RBH to BH.
FTBH scan in failure to breathhold setting, BH initial voluntary deep inspiration breathhold scan, RBH low dose repeated breathhold scan, CTV WBI clinical target volume of the treated breast, LAD left anterior descendant coronary artery, Contralat. Contralateral, LNN I through IV lymph node levels I–IV, LNN MI internal mammary nodes.