Fig. 2From: Intrapartum ultrasound measurement of the lower uterine segment thickness in parturients with previous scar in labor: a cross-sectional studyTrans abdominal ultrasound during first stage of labor with partial empty bladder, measuring the Lower Uterine Segment (LUS) with posterior UB wall, which shows a decreased thickness of the LUS (1.5Â mm). M: myometrium, F: fetus headBack to article page