Clinical Study
Helical Tomotherapy for Inoperable Breast Cancer: A New Promising Tool
Table 2
Parameters for organs at risk (OAR) during HT planning.
| OAR | Priority | Blocking | Importance | Histogram dose-volume points |
| Contralateral lung | 1 | Directional | 1000 | 5%-7 Gy | 30%-3 Gy | 50%-2 Gy | Heart | 2 | Directional | 1000 | 15%-10 Gy | 5%-15 Gy | Homolateral lung | 3 | Directional | 1000 | 50%-5 Gy | 15%-20 Gy | 5%-30 Gy | Contralateral breast | 4 | Directional | 1000 | 10%-3 Gy | Spinal cord | 5 | Directional | 300 | 30%-10 Gy | Liver | 6 | Directional | 300 | 20%-5 Gy |
|
|