Objective:This study was to preliminarily investigate the diagnostic value of 2D and 3D ultrasound on TVT‐O in the patients with stress urinary incontinence .Methods :40 in‐patients ,who were diagnosed with stress urinary incontinence in the department of Urology in the hospital were recruited as the subjects in this study .All these patients underwent TVT‐O .2D and 3D pelvic ultrasound was used both before and after the surgery ,and the measurements were recorded .Results :To compare the parameters of 40 stress urinary incontinence patients before and after TVT‐O :the horizontal and vertical displacements of the neck of bladder were found after maximum Valsal‐va ,compared with the pre‐TVT‐O ,showing the statistically significant difference between the delta‐X and delta‐Y values ;there’s significant difference between before and after TVT‐O of urethral rotation delta‐βand urethral length L2 maximum after Valsalva .There’s no statistically significant difference in urethral length L 1 ,X ,Y ,urethral tilt angleβand urethra‐vesical angleαbetween the two groups during resting .The pubovisceral muscle and the area of pelvic diaphragm hiatus were observed after maximum Valsalva in the patients before and after TVT‐O ,which was considered no statistically significant compared with the two groups .The tape after TVT‐O in patients with stress u‐rinary incontinence was clearly identified using 3D ultrasound .It showed“V”‐shaped high echo structure under ure‐thral tract .Conclusion :2D and 3D transperineal ultrasound can provide meaningful measurement parameters about pelvic structure before and after TVT‐O .The position and shape of TVT‐O tape can be clearly identified .Pelvic ul‐trasound can provide reliable imaging support for the evaluation of postoperative efficacy .%目的：探讨二维及三维超声对压力性尿失禁（SUI）患者 TVT‐O 手术疗效评估的价值。方法：选择SUI患者40例，所有患者均行TVT‐O手术治疗，分别于术前及术后行二维及三维盆底超声检查。结果：最大Valsalva动作后膀胱颈向后、下移动度距离ΔX、ΔY ，术后较术前测值减小（P＜0．05）；最大Valsalva动作后尿道旋转度Δβ术后较术前减小（P＜0．05）；最大Valsalva动作后尿道长度L2术后较术前长（P＜0．05）；静息状态下尿道长度L1，静息状态膀胱颈距X轴及Y轴的距离X、Y ，静息状态下尿道倾斜角β及膀胱尿道后角α，最大Valsalva状态下盆膈裂孔面积及耻骨直肠肌厚度等术后较术前均无统计学差异。经会阴三维声像图上SUI术后吊带表现为低回声尿道下方的“V”字形高回声结构，清晰可辨。结论：经会阴二维及三维超声能够为 TVT‐O 术前及术后盆底结构提供有意义的测量参数，能够清晰显示术后吊带的位置与形态，为术后疗效评估提供可靠的影像学支持。
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