Table 2. Dosimetric results for the whole-breast plans (n = 23; prescribed dose: 42.5 Gy/16 fx).
SD: standard deviation; FB: free-breathing; DIBH: deep inspiration breath-hold; Tomo: tomotherapy; WH: whole heart; LAD: left anterior descending artery; V: percentage of volume receiving at least a given dose
| FB (mean ±SD) | DIBH (mean ±SD) | Tomo 1 (mean ±SD) | Tomo 2 (mean ±SD) | |
| WH | ||||
| Max (Gy) | 43.5 ±0.5 | 31.6 ±12.3 | 35.0 ±5.0 | 28.0 ±8.2 |
| Mean (Gy) | 3.2 ±0.8 | 1.1 ±0.3 | 2.4 ±0.5 | 1.5 ±0.2 |
| V20 (%) | 5 ±2 | 0.5 ±0.7 | 1 ±1 | 0.2 ±0.3 |
| LAD | ||||
| Max (Gy) | 42.8 ±1.0 | 22.8 ±14.2 | 28.7 ±5.8 | 20.1 ±7.6 |
| Mean (Gy) | 27.0 ±6.3 | 8.0 ±7.6 | 13.7 ±4.1 | 6.6 ±2.4 |
| Left lung | ||||
| Mean (Gy) | 6.6 ±2.3 | 6.2 ±1.8 | 5.9 ±1.1 | 4.3 ±0.8 |
| V5 (%) | 22 ±7 | 23 ±6 | 30 ±5 | 21.9 ±4.0 |
| V20 (%) | 13 ±6 | 12 ±4 | 8 ±4 | 5 ±2 |
| Right breast | ||||
| Max (Gy) | 1.3 ±0.2 | 1.9 ±0.8 | 3.4 ±0.6 | 17.6 ±4.6 |
| V3.1 (%) | 0.0 ±0.0 | 0.0 ±0.0 | 0.1 ±0.4 | 33 ±15 |