How true is a true mid-sagittal section? – mid-sagittal section

Objective: To study the deviation of presumed mid-sagittal section from the true image plane, and compared whether certification (by the Fetal Medicine Foundation of United Kingdom) has an effect on the degree of this deviation. The impact of imperfect mid-sagittal section on NT measurement was examined. Methods: Eight sonographers, 4 of them were FMF-certified (Group A) and the other 4 were not (Group B). Each operator was asked to obtain an image section, which they believed to represent the true mid-sagittal section. 3D volume dataset was acquired on 5 women who attended for the first trimester screening. 5 d…