Liu Mingming, Liang Yuting, Zheng Xingzheng, Mo Na, Jin Erhu
Department of Radiology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China.
Beijing Maternal and Child Health Care Hospital, Beijing, China.
Sci Rep. 2024 Aug 1;14(1):17784. doi: 10.1038/s41598-024-68735-7.
The position of the internal os of the cervix reported in the literature was inconsistent on MRI images. Additionally, the practical impactful data influencing the internal os located by MRI is limited. We aimed to confirm the position of the internal os of the cervix on MRI images, and the influencing factors locating the the internal os by MRI. A single-center retrospective study was conducted. Data from 175 patients who underwent total hysterectomy for stage I endometrial cancer were collected. The internal os of the cervix is positioned as the starting point for measuring the length of the cervix on MRI images. On dynamic contrast-enhanced MRI (DCE-MRI), the section formed by the enhancement difference between the uterus and cervix, and on T2-weighted imaging(T2WI), the section formed by the physiological curvature of the uterus and the low signal intensity of the cervical stroma were used as starting points. The results showed no statistically significant difference compared with the removed uterus specimens (p = 0.208, p = 0.571, p = 0.804). A history of cesarean section(p < 0.001), irregular vaginal bleeding for more than three months(p < 0.001), cervical adenomyosis(p = 0.043), and premenopause(p = 0.001) were not conducive to locating the internal os of the cervix by MRI. Our findings provide valuable information and confirm the position of the internal os of the cervix on MRI images, and the several important infuencing factors. We hope that some patients will benefit from our study.
文献报道的宫颈内口在MRI图像上的位置并不一致。此外，影响MRI定位宫颈内口的实际有效数据有限。我们旨在确定MRI图像上宫颈内口的位置，以及MRI定位宫颈内口的影响因素。进行了一项单中心回顾性研究。收集了175例因I期子宫内膜癌接受全子宫切除术患者的数据。宫颈内口在MRI图像上被定位为测量宫颈长度的起点。在动态对比增强MRI（DCE-MRI）上，以子宫和宫颈之间增强差异形成的层面，以及在T2加权成像（T2WI）上，以子宫的生理曲率和宫颈基质的低信号强度形成的层面作为起点。结果显示与切除的子宫标本相比无统计学显著差异（p = 0.208，p = 0.571，p = 0.804）。剖宫产史（p < 0.001）、三个月以上不规则阴道出血（p < 0.001）、宫颈腺肌病（p = 0.043）和绝经前（p = 0.001）不利于MRI定位宫颈内口。我们的研究结果提供了有价值的信息，确定了MRI图像上宫颈内口的位置以及几个重要的影响因素。我们希望一些患者能从我们的研究中受益。
