Table 2.
Average (over 5 patients) mean doses and the volumes of organs at risk receiving more than 10 Gy, 30 Gy, and 45 Gy. The range of the mean dose is shown in square brackets, and the range of standard deviation is shown in parentheses.
| Volume of interest | Description |
|
IMRT (Tangential) | Reduction in mean dose with | |
|---|---|---|---|---|---|
| heart | Mean dose (Gy) | 7.58 [6.4–8.5] (0.71) | 14.46 [13.6–15.8] (0.99) | 52.4% | |
| V10 (%) | 15.2% | 30% | |||
| V30 (%) | 8.9% | 17% | |||
| V45 (%) | 4.4% | 5% | |||
| ipsilateral lung | Mean dose (Gy) | 4.86 [4.4–5.6] (0.4) | 11.04 [9.9–11.6] (0.7) | 44% | |
| V10 (%) | 20 | 20% | |||
| V30 (%) | 5.14 | 12.5% | |||
| V45 (%) | 1.18 | 5% | |||
| contralateral lung | Mean dose (Gy) | 0.48 [0.42–0.56] (0.05) | 2.21 [1.9–2.5] (0.3) | 21.7% | |
| V10 (%) | 4.72% | 5% | |||
| V30 (%) | negligible | Nil | |||
| V45 (%) | negligible | Nil | |||
| contralateral breast | Mean dose (Gy) | 0.48 [0.45–0.52] (0.02) | 6.98 [6.5–7.3] (0.3) | 6.87% | |
| V10 (%) | 3.12% | 10% | |||
| V30 (%) | negligible | 5% | |||
| V45 (%) | negligible | 2% |