Frontomaxillary facial angle in chromosomally normal fetuses at 11 + 0 to 13 + 6 weeks

Abstract

At 11 + 0 to 13 + 6 weeks the FMF angle decreases with fetal CRL but is not related to fetal NT or serum biochemistry. The measurement is reproducible and the results obtained by 3D and 2D ultrasound are similar.