Table 3 Dose differences between CT-based dose calculation and MRI bulk density assigned dose calculation
| Â | Plan Max Dose | D99 for Prostate | D95 for Prostate | |||
|---|---|---|---|---|---|---|
| Â | MRI (Gy) | CT (Gy) | MRI (Gy) | CT (Gy) | MRI (Gy) | CT (Gy) |
Patient 1 | 76.61 | 76.97 | 72.45 | 73.70 | 72.65 | 73.90 |
Patient 2 | 82.43 | 79.58 | 77.58 | 76.05 | 77.82 | 76.30 |
Patient 3 | 76.17 | 74.01 | 70.24 | 69.78 | 70.60 | 70.18 |
Patient 4 | 74.81 | 75.17 | 70.83 | 69.10 | 71.15 | 70.89 |
Patient 5 | 74.25 | 75.13 | 70.54 | 72.01 | 70.73 | 72.09 |
Patient 6 | 78.02 | 77.05 | 73.80 | 73.76 | 73.94 | 73.92 |
Patient 7 | 78.78 | 77.46 | 73.67 | 73.42 | 73.81 | 73.55 |
Patient 9 | 81.59 | 79.62 | 76.77 | 75.77 | 76.98 | 75.95 |
Patient 10 | 74.97 | 75.25 | 70.63 | 72.03 | 70.70 | 72.13 |
Avg Dose Diff. | −1.01% | −0.11% | 0.12% | |||
STDEV | 1.69% | −0.34% | −0.09% | |||
P value | 0.104 | 0.816 | 0.873 | |||