Table 2 Bilateral hippocampal dosimetric parameters
From: Improved hippocampal dose with reduced margin radiotherapy for glioblastoma multiforme
| Â | Standard margin | Reduced margin | Â | Â | Â | ||
|---|---|---|---|---|---|---|---|
Parameter | Mean | St. Dev. | Mean | St. Dev. | Difference (Gy) | (%) | p-value |
Max dose (Gy) | 61.4 | 1.4 | 56.1 | 8.6 | 5.3 | 8.7% | 0.014 |
Mean dose (Gy) | 41.9 | 9.1 | 29.9 | 11.6 | 12.0 | 28.7% | <0.001 |
Median dose (Gy) | 45.2 | 17.2 | 27.9 | 15.6 | 17.2 | 38.2% | <0.001 |
D2% (Gy) | 59.9 | 5.1 | 53.4 | 12.1 | 6.4 | 10.7% | 0.008 |
D20% (Gy) | 57.6 | 8.5 | 46.1 | 16.8 | 11.5 | 20.0% | 0.001 |
D40% (Gy) | 49.9 | 14.9 | 36.5 | 19.6 | 13.4 | 26.9% | <0.001 |
D60% (Gy) | 32.7 | 13.5 | 18.7 | 10.9 | 14.0 | 42.9% | <0.001 |
D80% (Gy) | 27.3 | 12.1 | 15.3 | 10.0 | 12.0 | 44.0% | <0.001 |
D98% (Gy) | 20.7 | 9.3 | 11.8 | 7.7 | 8.9 | 42.9% | <0.001 |