论文部分内容阅读
目的探讨正常直肠系膜及其筋膜的MR表现特点。方法搜集100例资料按年龄分5组。由2位放射科医生共同观察分析MRI图像,详细记录:①直肠系膜筋膜显示情况;②直肠系膜与盆壁脂肪的信号强度;③各年龄组直肠系膜厚度与盆壁皮下脂肪厚度比值差异。结果正常直肠前、后、左、右侧直肠系膜筋膜显示率分别为77%、100%、91%、93%。直肠系膜平均信号强度为550.8843,盆壁脂肪平均信号强度为469.8693,按统计学分析,P(0.05,直肠系膜信号强度明显高于盆壁脂肪,这种差异大多数肉眼可辨。各年龄组间直肠系膜厚度与盆壁脂肪厚度比值经q检验,P值均(0.05,其差异无统计学意义,其95%可信区间为(0.91,1.08)。结论MRI图像能清楚显示直肠系膜及筋膜,后方筋膜显示率高于两侧方及前方筋膜;直肠系膜信号强度高于盆壁脂肪;直肠系膜厚度与盆壁脂肪厚度比值和年龄没有明显关系。
Objective To investigate the MR features of normal mesorectum and fascia. Methods 100 cases were collected according to age group 5. Two radiologists observed and analyzed the MRI images. The detailed records were recorded as follows: (1) the mesorectal fascia showed; (2) the signal strength of the mesorectum and pelvic fat; (3) the difference of the ratio of the mesorectal membrane thickness to the pelvic wall subcutaneous fat thickness in each age group. Results The normal rate of rectal mesangial fascia was 77%, 100%, 91% and 93% respectively. The average signal intensity of mesorectum was 550.8843, and the average signal strength of pelvic wall was 469.8693. According to statistical analysis, P (0.05), the signal intensity of mesangial was significantly higher than that of pelvic wall, most of which were discernible to the naked eye The ratio of the thickness of the mesorectum to the thickness of the pelvic wall was q test, P value (0.05, the difference was not statistically significant, the 95% confidence interval (0.91,1.08) .Conclusion MRI images clearly show the mesorectum and fascia , The rate of posterior fascia was higher than that of both sides and anterior fascia; the signal intensity of mesorectum was higher than that of pelvic wall; the ratio of mesorectum thickness to wall thickness of pelvic wall had no significant relationship with age.