Three-dimensional ultrasound images of the embryo at 8 weeks of gestation (left) and macroscopic pictures of aborted fetus at the same gestation (right). Normal 8-week embryo. Lateral view (upper left) and occipital view (lower left). Occipital view shows the premature spinal cord that is seen in the right picture. Source : From Ref. 6.

Three-dimensional ultrasound images of the embryo at 8 weeks of gestation (left) and macroscopic pictures of aborted fetus at the same gestation (right). Normal 8-week embryo. Lateral view (upper left) and occipital view (lower left). Occipital view shows the premature spinal cord that is seen in the right picture. Source : From Ref. 6.