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首页> 外文期刊>Radiology >Anal sphincter complex: endoanal MR imaging of normal anatomy.
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Anal sphincter complex: endoanal MR imaging of normal anatomy.

机译：肛门括约肌复合体：正常解剖的肛门内MR成像。

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摘要

PURPOSE: To determine the normal anatomy of the anal sphincter complex on magnetic resonance (MR) images. MATERIALS AND METHODS: Ten healthy volunteers (four men, six women; age range, 21-26 years) underwent MR imaging with an endoanal coil. RESULTS: The lower part of the anal canal contained the internal sphincter, the longitudinal muscle layer, and the external sphincter; the upper part comprised the internal sphincter, the longitudinal layer, and the puborectal muscle. At the upper end, the puborectal muscle was attached to the levator ani muscle. Anteriorly, the external sphincter was connected to the urogenital diaphragm; posteriorly, it was attached to the coccyx with the anococcygeal ligament. All perianal spaces were visible. The morphology of the anterior part of the external sphincter, different in men and women, was well displayed. CONCLUSION: Depiction of the anal sphincter complex on MR images is excellent.
机译：目的：确定磁共振（MR）图像上肛门括约肌复合体的正常解剖结构。材料与方法：十名健康志愿者（四名男性，六名女性;年龄范围为21-26岁）接受了带内线圈的MR成像。结果：肛管下部包含内括约肌，纵肌层和外括约肌;上部包括内部括约肌，纵向层和耻骨直肠肌。在上端，耻骨肌附着在肛提肌上。在前面，外括约肌连接到泌尿生殖器diaphragm肌;后部，它通过无球囊韧带附着在尾骨上。所有肛周间隙均可见。男性和女性的外括约肌前部形态均得到很好的展示。结论：在MR图像上对肛门括约肌复合物的描绘非常好。

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