目的 使用动态电影序列研究正 常年轻女性在不同月经周期子宫内膜蠕动 的规律，同时观察和研究子宫内膜异位症 患者排卵期的子宫内膜蠕动，并与正常年 轻女性相对照。方法 2014年9月-12月期 间，对55名年轻女性志愿者在月经不同周 期进行盆腔动态磁共振扫描，采集时间为 6min，并生成电影文件，以十倍速率播 放。由两名影像科诊断医师进行观察记录 子宫内膜蠕动的情况。结果 子宫内膜蠕 动在月经不同周期有着一定的规律，排卵 期最为活跃，频率约12.48次/6min，主要 蠕动方向为宫颈-宫底(CF)；黄体期子宫 内膜蠕动最不活跃，频率约为1次/6min， 月经期内膜蠕动频率约为3.55次/6min， 主要方向为宫底-宫颈(FC)。结论 动态磁 共振序列可以清楚显示子宫内膜蠕动征 象。子宫内膜蠕动在不同月经周期有着一 定的规律性，排卵期内膜蠕动最为活跃， 主要方向为宫颈-宫底，有助于输送精 子；黄体期内膜蠕动最不活跃，有助于胚 胎着床和早期胚胎的保存；月经期内膜蠕 动方向主要为宫底-宫颈，有助于向体外 排出经血。

Objective To demonstrate and evaluate uterine peristalsis on cine magnetic resonance imaging (MRI) using ultrafast imaging. Methods Between September 2014 and December 2014, a total of fifty-five volunteers were underwent cine MR imaging over 360 seconds and videotaped at the speed of ten times. Two radiologists independently evaluated videotapes of 98 studies. Results Uterine peristalsis is found depending on menstrual cycle phase.It is most active during periovulatory phase from cevico to fudal at the speed of 12.48 times every 6 minutes.It is most inactive during luteal phase at the speed of 1 time every 6 minutes.Uterine peristalsis during menstrua phase is from fudal to cervico at the speed of 3.55 times every 6 minutes. Conclusion Uterine peristalsis was demonstrated on cine MR using ultrafast MRI. Direction and frequency of peristaltic waves are closely related to menstrual cycle phases