Table 2.
Dose limits defined according to a consensus of all SBRT liver centres in the Netherlands.
| # fractions | 3 | 5 | 8 | 12 | |
|---|---|---|---|---|---|
| Total dose [Gy] | 60 | 60 | 60 | 60 | |
| Spinal cord* | D max [Gy] | 18 | 22 | 27 | 31 |
| Oesophagus | D max [Gy] | 27 | 33 | 40 | 47 |
| Liver | D(700 cc) [Gy] | 15 | 18 | 21 | 24 |
| Duodenum/stomach | D max [Gy] | 30 | 37 | 45 | 53 |
| Duodenum/stomach | D(5cc) [Gy] | 23 | 28 | 33 | 38 |
| Kidney | D(66%) [Gy] | 15 | 18 | 21 | 24 |
| Heart** | Mean Dose** | 30 | 37 | 45 | 53 |
*
Spinal cord α/β = 2; other OAR’s α/β = 3.
**
No absolute constraint, but used in Haaglanden Medical Center as a planning objective to minimise dose in the heart.