Table 3.
Comparison of heart and left anterior descending coronary artery (LAD) dosimetric parameters in the two setup positions for the 17/41 patients with left breast cancer
| Prone setup | Supine setup | p-value | |
|---|---|---|---|
| Heart (cc) |
438.3 ± 79.5 |
465.3 ± 90.3 |
0.09 |
| V20 (%) |
1.5 ± 2.2 |
1.5 ± 1.5 |
0.90 |
| V10 (%) |
2.3 ± 2.8 |
2.6 ± 2.4 |
0.64 |
| V5 (%) |
4.0 ± 4.1 |
4.6 ± 3.9 |
0.59 |
| Dmean (Gy) |
1.9 ± 1.3 |
2.0 ± 1.0 |
0.95 |
| Dmax (Gy) |
36.8 ± 12.5 |
41.9 ± 9.8 |
0.06 |
| Dmean LAD (Gy) |
11.8 ± 9.8 |
12.0 ± 9.1 |
0.95 |
| Dmax LAD (Gy) | 27.8 ± 16.0 | 33.0 ± 13.2 | 0.14 |