My brother and his wife are expecting their first baby due in late June and they had a 3D ultra sound session last month. It was interesting to chat with the owner/operator of the ultra sound machine about using the captured data for 3d printing. He was very interested and talked to us about his setup. Most affordable ultrasound sessions (under 100 bucks) are licensed machines that aren’t capable of exporting usable 3d data. It was interesting to find out the hardware and software are very crude and proprietary. He actually screen captures his patients sessions and burns it to dvd, it doesn’t allow exporting images or video without another licensed software add-on. We were however able to take a screenshot from the session and convert the black+white photo to a lithograph style model. We haven’t printed it though because it looks more like a mountain then a baby. He did suggest the more higher end million dollar machines most likely can export some type of 3d data.