Methods | Numbers | Intersphincteric | Transsphincter | Supra sphincter | Extra Sphincter shape | Coincidence rate |
2D high-frequency ultrasound group | 52 | 34 | 14 | 4 | 0 | 90% |
Joint group | 52 | 32 | 14 | 5 | 1 | 95% |
Surgical diagnosis | 52 | 32 | 14 | 5 | 1 | 100% |