Fig. 2From: Distribution of uterocervical angles of pregnant women at 16+ 0 to 23+ 6 weeks gestation with low risk for preterm birth: first vietnamese cohort of women with singleton pregnancies(a) GA 20+ 0 weeks, UCA 101.75o. (b) GA 22+ 2 weeks, UCA 55.93o.Transvaginal ultrasound measurement of the UCA. Measurement of the triangular segment between the lower uterine segment and the cervical canalBack to article page