<prompt> During USG, fetal abdominal circumference is measured at the level of:Stomach and umbilical vein, perpendicular to spineKidneysStomach parallel to spineLiver and spleen  <response>: Ans. is a, i.e Stomach and umbilical vein, perpendicular to the spineRef. Williams 24e, p 198The abdominal circumference is measured at a transverse plane i.e. plane perpendicular to fetal spine at the level of stomach and conference of the umbilical vein with the portal sinus.It is an indicator of fetal growth, hence is an indicator of IUGRmacrosomia in fetus.Note: Biparietal diameter: is measured in transthalamic view at the level of thalamic and cavut septum pellucidum CSP, from the outer edge of the skull to inner edge of the distal skull. 