Ultrasonic imaging of normal intrauterine fetal anatomy

With the advent and subsequent refinement of gray scale compound scanning, we are now able to obtain in utero a more detailed look at the size, shape, position, and anatomical relationships between the internal organs and vascular structures within the body of a fetus. It is now possible to visualize fetal intracranial structures, lungs, myocardium and valvular structures, liver, spleen, stomach, abdominal aorta, portal venous system, gall bladder, umbilical vein, kidneys, urinary bladder, and genitalia. Fetal extremities, including individual phalanges, are better visualized with gray scale than with bistable sonography.