DeVore GR, et al. – The sphericity index (SI) for 24 transverse segments distributed from the base (segment 1) to the apex (segment 24) of the right and left ventricles to ascertain whether an abnormal SI occurs at locations other than the basal segment are assessed in this study. The SI of 24–segments of the right and left ventricles provides a comprehensive method to analyze the shape of the ventricular chambers and recognizes more fetuses that are growth restricted with an abnormal SI than only utilizing the basal segment.