You don't want to stand in front of an X-ray machine for any longer than necessary, and scientists have found a clever way to make that happen: the Kinect sensor you might have picked up with your Xbox. Their technique has the depth-sensing camera measuring both motion and the thickness of your body to make sure that doctors get a high-quality shot using as little radiation as possible. That's particularly important for kids, who can be sensitive to strong X-ray blasts.
Source: Washington University in St. Louis
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