王大勇 邱晓虹 李龙 王燕霞 孙国强 王大勇、邱晓虹、李龙、王燕霞(100045 首都医科大学附属北京儿童医院外科)；孙国强(放射科) 中华小儿外科杂志 1999 0 20 1


    关键词：肛门；直肠；CT扫描 期刊 zhxrwkzz 0 肛肠外科 fur -->


    

【摘要】 目的 利用CT了解术前患儿的耻骨直肠肌、括约肌的形态变化，并寻找评价该肌肉的发育指标及其价值。方法 对29例患儿进行CT扫描检查，测量括约肌的宽度与坐骨支间距的比值，并根据肌肉形态制定发育标准与直肠盲端位置进行比较。结果 得出肌肉发育程度与直肠盲端位置的高低不成比例；当括约肌的宽度与坐骨支间距的比值<0.13时表明括约肌发育差。结论 从直肠盲端位置的高低判断盆底肌的发育不准确，CT可以直接从形态上了解括约肌为代表的盆底肌的发育，并从影像中定性定量地分析括约肌形态的变化与排便功能的关系。

    Morphological Study of Puborectalis and AnalSphincter in Anorectal Anomaly with Computerized Tomography

WANG Dayung, QIU Xiaohung, LI Long,

    Department of Surgery, Beijing Children's Hospital, Capital University of Medical Science,Beijing 100045

【Abstract】 Objective Thisstudy aims to correlate the morphological changes of puborectalis and anal sphincter withthe level of rectal blind end in patients with anorectal anomalies.Methods Twenty-ninepatients underwent computerized tomography (CT) morphological study preoperatively. Theratios of sphincter width to the distance between ischial tuberosities were measured. Aratio less than 0.13 signified poor muscle development. The distance of blind end ofrectum was also measured.Results The muscle development did notcorrelate with the level of rectal blind end.Conclusions The positionof rectal blind end is not predictive of pelvic muscle development. Pelvic CT providesbetter visualization of pelvic muscle and correlates more to the functional outcome.

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