Table 3.
Dose–volume histogram (DVH) statistics for cardiac structures.
| Heart | IMRT | VMAT | HT | IMPT-1 | IMPT-2 | P<0.05 |
|---|---|---|---|---|---|---|
| V5 (%) | 79.6 ± 27.5 | 82.3 ± 27.7 | 60.1 ± 19.2 | 66.1 ± 23.0 | 44.5 ± 16.32 | b,c,d,e,g,h,i,j |
| V6 (%) | 66.6 ± 12.2 | 80.4 ± 13.5 | 55.8 ± 4.0 | 62.4 ± 7.8 | 43.37 ± 8.46 | b,d,e,g,h,i,j |
| V7 (%) | 53.7 ± 13.0 | 69.4 ± 14.6 | 47.5 ± 4.1 | 52.8 ± 7.0 | 38.69 ± 7.85 | a,d,e,f,g,h,i,j |
| V8 (%) | 43.1 ± 11.7 | 58.5 ± 15.5 | 40.2 ± 4.0 | 49.4 ± 6.4 | 33.94 ± 6.99 | a,c,d,f,h,j |
| V9 (%) | 33.6 ± 10.1 | 48.8 ± 17.2 | 33.7 ± 4.0 | 43.0 ± 6.0 | 29.21 ± 6.26 | a,c,d,f,h,j |
| V10 (%) | 24.7 ± 7.4 | 38.9 ± 18.9 | 27.2 ± 3.8 | 36.1 ± 5.9 | 24.11 ± 5.45 | a,b,c,f,h,j |
| V11(%) | 16.2 ± 4.4 | 27.4 ± 16.9 | 20.9 ± 5.0 | 27.5 ± 5.3 | 18.47 ± 4.53 | a,b,c,f,h,j |
| V12(%) | 7.4 ± 2.3 | 11.8 ± 9.0 | 10.5 ± 3.5 | 15.7 ± 3.9 | 11.17 ± 3.27 | b,c,e,f,g,j |
| Dmean(Gy) | 7.8 ± 0.7 | 8.7 ± 1.1 | 7.3 ± 0.4 | 7.8 ± 0.8 | 5.5 ± 0.9 | b,d,f,g,h,i,j |
| RA | ||||||
| Dmean(Gy) | 8.9 ± 0.6 | 9.4 ± 1.0 | 9.0 ± 0.9 | 10.3 ± 0.9 | 8.3 ± 1.1 | c,f,h,j |
| RV | ||||||
| Dmean(Gy) | 6.0 ± 1.1 | 6.7 ± 1.8 | 5.3 ± 0.9 | 5.0 ± 1.0 | 2.8 ± 1.3 | c,e,g,h,i,j |
| LA | ||||||
| Dmean(Gy) | 7.8 ± 0.7 | 8.9 ± 1.3 | 7.5 ± 0.8 | 6.5 ± 1.0 | 4.2 ± 1.0 | a,c,e,f,g,h,i,j |
| LV | ||||||
| Dmean(Gy) | 7.9 ± 0.7 | 9.5 ± 1.6 | 7.6 ± 0.5 | 8.5 ± 0.8 | 6.2 ± 1.3 | a,c,d,f,g,h,i,j |
RA, right atrium; RV, right ventricle; LA, left atrium; LV, left ventricle; a, IMRT vs VMAT; b, IMRT vs HT; c, IMRT vs PT; d, VMAT vs HT; e, VMAT vs PT; f, HT vs PT; g, IMRT vs IMPT-2; h, VMAT vs IMPT-2; I, HT vs IMPT-2; j, IMPT-1 vs IMPT-2.