You cannot determine whether the baby is African American or caucasian on a 3D ultrasound. You can determine the sex of the baby, depending on the position of the baby and how active it’s being during the ultrasound.References:”Clear Image Ultrasound”: Things that effect image of ultrasound.”Medical Physics Web”: History of 3D ultrasound.”4Dultrasounds”: How 3D ultrasounds work.Resources:”4Dultrasounds”: Locate a provider.