Table 1.
Characteristics of the 155 patients in this study
| Number of patients / RT-CT slices | Patients / RT-CT slices | 155 / 5531 | |
|---|---|---|---|
| Age (years old) | Median (range) | 71 (53–86) | |
| T stage (%) | 1 | 97 (62.6) | |
| 2 | 39 (25.2) | ||
| 3 | 18 (11.6) | ||
| 4 | 1 (0.6) | ||
| Gleason Score (%) | 6 | 23 (14.8) | |
| 7 | 74 (47.7) | ||
| 8 | 27 (17.4) | ||
| 9 | 30 (19.4) | ||
| 10 | 1 (0.6) | ||
| Number of RT-CT slices per patient (slices) | Median (range) | 36 (25–54) | |
| Prostate volume (cm3) | Median (range) | 50.0 (21.4–126.7) | |
| Length of the urethra contoured as the organ at risk | Whole urethra (mm) | Median (range) | 45.5 (31.9–71.5) |
| Superior segment (mm) | Median (range) | 15.2 (10.1–28.0) | |
| Middle segment (mm) | Median (range) | 15.1 (10.2–22.8) | |
| Inferior segment (mm) | Median (range) | 15.2 (10.4–26.7) | |