Abstract：Objective: To explore the application value of strain cervical elastography in the characteristics of cervical softness during pregnancy and non-pregnancy. Methods: Forty pregnant women who received prenatal examination in Beijing Obstetrics and Gynecology Hospital from November 2017 to October 2018 were selected and divided into two groups: group 1 (20 cases, 20~24 weeks), group 2(20 cases, 28~34 weeks) and 20 non-pregnant women were included as control. Five cervical elasticity indexes were obtained by strain elastography: entire cervical strain rate(CS); closed internal cervical os strain rate(CIS); external cervical os strain rate(ES); the midpoint of the cervical canal strain rate(CCS); anterior lip of the cervical strain rate(ACS). One-way ANOVA was used in the normal data and LSD-t test was used in the two groups. Kruskal-Wallis test was used in multi-group for the non-normal data. Results: CS, ES and CCS in pregnancy group were significantly higher than those in non-pregnancy group. However, there was no significant difference of those between pregnancy groups. ACS in group 1 was significantly higher than group 2 and non-pregnancy group. Especially, CIS indicated no significant difference among the three groups. Conclusion: Cervical strain elastography may objectively show the characteristics of cervical tissue that changed during pregnancy. Closed internal cervical os tissue may not be soften before 34 weeks and the rest regions of cervical tissue probably had begun to be soften before 20 weeks of gestation. Those characteristics may give a hand for predicting or monitoring the premature delivery and other cervical lesions.
李菁华，吴青青，张丽娜，梁 娜，王晶晶. 孕期与非孕期宫颈组织应变超声弹性成像参数对比研究[J]. 中国临床医学影像杂志, 2019, 30(11): 795-798.
LI Jing-hua, WU Qing-qing, ZHANG Li-na, LIANG Na, WANG Jing-jing. Assessment of cervical softness using strain elastography in pregnant and in non-pregnant women. JOURNAL OF CHINA MEDICAL IMAGING, 2019, 30(11): 795-798.
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