| No. of patients: | 16 | |
| No. of sessions: | 16 times | |
| Anesthesia: | Spinal 15 times, caudal 1 time | |
| HIFU exposure time: | Median 28 min. | Range 9 - 42 min. |
| Hospital stay (post OP): | 2 days | 2 - 7 days |
| Catheterization period: | 5.5 days | 4 - 21 days |
| Adverse effects: | None |