Fig. 4From: Frontal tangential coronal view two-dimensional ultrasonography in assessment of fetal face [mouth and nose] in comparison with four-dimensional ultrasonographyClose proximity to hand; 4D image a shows the left upper limb and hand cover the mouth and nose, and no enough details could be depicted from the image in contrast to 2D tangential images, b and c that show the lips the tongue protruding from the open mouth [arrow]Back to article page