MRI in evaluation on changes of cervix uterus in pregnant women at high risk of preterm delivery / 中国医学影像技术

ABSTRACT

Objective: To observe cervical changes in pregnant women at high risk of preterm delivery with MRI. Methods: Twenty high-risk preterm women (observation group) and 20 non-preterm women (control group) were collected. T2WI and DWI signals, cervical length, the width of inner cervix and ADC values were measured and compared between 2 groups. Results: In observation group, the length of cervix was significantly shorten, with an average (25.16±15.68)mm, while the width of inner cervix was widen like bell-mouthed, with an average (20.46±1.82)mm. On sagittal T2WI and DWI, signal of in subglandular region increased in observation group. The mean ADC value of cervical subglandular region was (1.87±0.52)×10-3 mm2/s and the mean ADC value of cervical stromal layer was (1.50±0.43)×10-3 mm2/s in observation group, while in control group was(1.37±0.06)×10-3 mm2/s and(1.27±0.08)×10-3 mm2/s, respectively (both P<0.05). Conclusion: MRI can display cervical changes of pregnant women at high risk of preterm delivery, having great value for early prediction and clinical intervention of premature delivery.