To explore the clinical diagnostic value of transperineal ultrasound(TPUS)and MR defecography(MRD)in female outlet obstruction constipation(OOC)by using X-ray defecography(XRD)as the gold standard.

From January 2020 to December 2021, 41 female patients who were clinically diagnosed as OOC in the Department of Anorectal Diseases of Nanjing Hospital of Traditional Chinese Medicine were selected for XRD, TPUS and MRD.With XRD as the reference standard, the sensitivity and specificity of TPUS and MRD in the diagnosis of rectocele, perineal descent, rectal intussusception, enterocele and pelvic floor dyssynergia were evaluated, and the consistency of the three imaging results was tested.

Taking XRD as the reference standard, the sensitivity of TPUS in the diagnosis of rectal intussusception, rectocele, perineal descent, enterocele, and pelvic floor dyssynergia was 94.12%, 87.5%, 55.56%, 80%, and 100%, and the specificity was 100%, 88.89%, 100%, 100%, and 93.33%.The sensitivity of MRD in the diagnosis of rectal intussusception, rectocele, perineal descent, enterocele and pelvic floor dyssynergia was 70.59%, 81.25%, 55.56%, 60% and 63.64%, and the specificity was 100%, 77.78%, 75%, 100% and 96.67%.TPUS was highly consistent with XRD in the diagnosis of rectocele and perineal descent, and the Kappa coefficients were 0.682 and 0.661.TPUS has good consistency with XRD in the diagnosis of rectal intussusception, enterocele, pelvic floor dyssynergia, and the Kappa coefficients were 0.845, 0.875, 0.883.MRD was highly consistent with XRD in the diagnosis of enterocele and pelvic floor dyssynergia, and the Kappa coefficients were 0.725 and 0.660.

TPUS can be used as a preliminary evaluation technique for female OOC; MRD can be used as an effective supplement to the etiological diagnosis of such patients.