Table 1.
Intra-operative dosimetry mean values, with ranges for lateralized/partial (hemi-ablation approach) and contralateral posterior zone (bilateral posterior approach)
| Parameter | Intra-operative | |||
|---|---|---|---|---|
| Lateralized | Bilateral posterior | |||
| Mick | Stranded | Stranded | Mick | |
| Number of needles | 9 | 9 | 13 | 13 |
| Number of seeds Activity (mCi) | 27 | 33 | 42 | 43 |
| 0.472 | 0.500 | 0.512 | 0.512 | |
| GTV (cc) | 1.1 | 1.1 | 0.6 | 0.6 |
| GTV D90% (Gy) | 342 | 234 | 246 | 234 |
| GTV V100% (%) | 100 | 98 | 100 | 100 |
| GTV V150% (%) | 95 | 28 | 43 | 33 |
| GTV V200% (%) | 69 | 6 | 19 | 9 |
| CTV (cc) | 6.2 | 9.4 | 14.9 | 14.9 |
| CTV D90% (Gy) | 217 | 219 | 196 | 223.4 |
| CTV V100% (%) | 92 | 92 | 86.5 | 95.3 |
| CTV V150% (%) | 60.4 | 47.5 | 37.6 | 29.6 |
| CTV V200% (%) | 36.6 | 20 | 15.4 | 11.5 |
| Prostate volume (cc) | 33.3 | 41.8 | 35.7 | 36.4 |
| Prostate D90% (Gy) | 32.8 | 37.6 | 103.9 | 89.9 |
| Prostate V100% (%) | 25.3 | 28.3 | 55.5 | 19.3 |
| Ratio volume CTV focal/prostate | 0.19 | 0.22 | 0.42 | 0.41 |
| Urethra D0.1cc (Gy) | 275 | 210 | 410 | 228 |
| Urethra D10 (Gy) | 237 | 203 | 329 | 221 |
| Urethra D30 (Gy) | 165 | 164 | 254 | 212 |
| Urethra V100 (cc) | 0.35 | 0.1 | 1.5 | 0.8 |
| Rectum D2cc (Gy) | 40 | 83 | 109 | 32 |
| Rectum D1cc (Gy) | 48 | 99 | 130 | 38 |
| Rectum D0.1cc (Gy) | 66 | 135 | 197 | 53 |
| Rectum mean (Gy) | 15 | 31 | 39.4 | 16 |
| Rectum max dose (Gy) | 77 | 157 | 206 | 65 |
| Rectum V100% (%) | 0 | 0 | 0 | 0 |