Measurement of anal sphincter muscles: Endoanal US, endoanal MR imaging, or phased-array MR imaging? A study with healthy volunteers
Measurement of anal sphincter muscles: Endoanal US, endoanal MR imaging, or phased-array MR imaging? A study with healthy volunteers
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DOI：
10.1148/radiology.220.1.r01jn1481
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发表时间：
2001-07-01
期刊：
影响因子：
19.7
通讯作者：
van Engelshoven, JMA
中科院分区：
文献类型：
--
作者：
Beets-Tan, RGH;Morren, GL;van Engelshoven, JMA
目得：比较肛门内超声（US），肛门内磁共振（MR）成像，和相控阵MR成像肛门括约肌measurement.MATERIALS和METHODS：60名健康志愿者进行了1.5 T相控阵MR，肛门内MR，和肛门内US检查。测量括约肌厚度。分析了测量的可靠性，并计算了成像方法之间的相关性。多变量分析进行评估的影响，年龄，体重，身高，性别，产次，和产科创伤对sphincter dimensions.RESULTS：两种MR方法有很好的可靠性测量的所有括约肌组件，而肛门内的美国是可靠的内括约肌测量。除了两种MR技术之间的相关性很小外，两种技术之间的相关性很小，总括约肌和会阴体厚度具有很强的相关性。在肛门内超声和肛门内磁共振成像中，内括约肌随年龄增长而显著增厚（P = 0.002），但在相控阵磁共振成像中没有。有小的基于性别的差异，括约肌测量在相控阵MR imaging only.CONCLUSION：Endoanal US使可靠的测量只有内括约肌厚度，而这两种MR成像方法使可靠的测量所有括约肌组件。用相控阵MR成像测量括约肌与肛内MR成像一样可靠。
PURPOSE: To compare endoanal ultrasonography (US), endoanal magnetic resonance (MR) imaging, and phased-array MR imaging for anal sphincter muscle measurement.MATERIALS AND METHODS: Sixty healthy volunteers underwent 1.5-T phased-array MR, endoanal MR, and endoanal US examinations. Sphincter muscle thicknesses were measured. Measurement reliability was analyzed, and correlations among the imaging methods were calculated. Multivariate analysis was performed to assess the influence of age, weight, height, sex, parity, and obstetric trauma on sphincter dimensions.RESULTS: Both MR methods had good reliability for measurements of all sphincter components, whereas endoanal US was reliable for internal sphincter measurement only. There was little correlation between the techniques, except between the two MR techniques, with a strong correlation for total sphincter and perineal body thickness. The internal sphincter thickened significantly (P =.002) with age at endoanal US and endoanal MR imaging but not at phased-array MR imaging. There were small sex-based differences in sphincter muscle measurements at phased-array MR imaging only.CONCLUSION: Endoanal US enables reliable measurement of only internal sphincter thickness, whereas both MR imaging methods enable reliable measurement of all sphincter components. Sphincter measurement with phased-array MR imaging is as reliable as that with endoanal MR imaging.