Table 2 Coverage of potential ECE
Axial plane 1 cm caudal to the base | Mean (mm) | Range (mm) | Distance ≥ 3 mm (%) | Distance ≥ 4 mm (%) | Distance ≥ 5 mm (%) | Distance ≥ 6 mm (%) | Distance ≥ 7 mm (%) |
|---|---|---|---|---|---|---|---|
 Anterior | 7.82 | 1.10 – 14.42 | 95% | 88% | 85% | 73% | 61% |
 Left | 8.59 | 4.47 – 18.46 | 100% | 100% | 95% | 85% | 73% |
 Right | 8.41 | 4.62 – 18.15 | 100% | 100% | 95% | 71% | 59% |
 Left posterolateral | 11.42 | 3.11 – 27.02 | 100% | 98% | 88% | 83% | 76% |
 Right posterolateral | 11.03 | 3.12 – 27.02 | 100% | 98% | 88% | 80% | 73% |
 Posterior | 1.92 | −0.66 – 6.070 | 20% | 7% | 5% | 2% | 0% |
Distance from rectum to prostate capsule | 2.41 | 0 – 17.01 |  |  |  |  |  |
Axial plane at mid-prostate | Mean (mm) | Range (mm) | Distance ≥ 3 mm (%) | Distance ≥ 4 mm (%) | Distance ≥ 5 mm (%) | Distance ≥ 6 mm (%) | Distance ≥ 7 mm (%) |
 Anterior | 9.01 | 4.42 – 17.32 | 100% | 100% | 98% | 76% | 68% |
 Left | 8.48 | 4.47 – 16.12 | 100% | 100% | 98% | 88% | 66% |
 Right | 7.57 | 3.53 – 15.20 | 100% | 98% | 90% | 76% | 49% |
 Left posterolateral | 7.87 | 2.04 – 26.86 | 98% | 95% | 83% | 61% | 51% |
 Right posterolateral | 7.60 | 0 – 20.10 | 95% | 85% | 78% | 68% | 51% |
 Posterior | 1.97 | −0.66 – 4.86 | 29% | 12% | 0% | 0% | 0% |
Distance from rectum to prostate capsule | 0.87 | 0 – 3.58 |  |  |  |  |  |
Axial plane 0.5 cm cranial to apex | Mean (mm) | Range (mm) | Distance ≥ 3 mm (%) | Distance ≥ 4 mm (%) | Distance ≥ 5 mm (%) | Distance ≥ 6 mm (%) | Distance ≥ 7 mm (%) |
 Anterior | 9.53 | 3.56 – 15.38 | 100% | 95% | 95% | 95% | 83% |
 Left | 13.40 | 7.64 – 22.09 | 100% | 100% | 100% | 100% | 100% |
 Right | 12.28 | 5.55 – 21.36 | 100% | 100% | 100% | 98% | 95% |
 Left posterolateral | 7.25 | 0 – 17.34 | 93% | 85% | 73% | 61% | 44% |
 Right posterolateral | 7.27 | 0 – 15.81 | 98% | 93% | 85% | 68% | 51% |
 Posterior | 2.86 | 0 – 6.83 | 41% | 24% | 12% | 2% | 0% |
Distance from rectum to prostate capsule | 0.79 | 0 – 3.50 |  |  |  |  |  |