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New York, 1:23 AM
Fri Dec 25
14 posts in the last 24 hours
Originally, "3D" ultrasound took a flat "section" (2D) and followed it through time (+1D). The newer "4D " ultrasound composites the 3D pictures and projects them onto a 2D surface (your screen). Sure, it's only really a 3D projection, but it allows you to rotate the image and see it from the side (as shown in the video), and also adds depth to the unrotated image.
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