Fig. 3

Incidence of hypointense and isointense MRI signal of the LUS, referenced to the adjacent myometrium (a) and degree of LUS thinning (b) in patients with cesarean section (black bars) and controls with unscarred uteri (white bars). LUS thickness ≥ 2.0 mm was defined as normal; 1.5 < 2.0 mm slightly; 1.0 < 1.5 mm moderately; and < 1.0 mm severely thinned or suspected uterine dehiscence