Some ultrasound units

From Rob:
Here are a couple of websites on a USB ultrasound probe made by Interson. I know nothing about the company: http://www.interson.com/News/PressReleaseMay272009/tabid/81/Default.aspx
http://www.amdworldwide.com/seemore.html

This fetal heart monitor designed for the developing world has several features that would be desirable for the ultrasound unit: simple, durable, and ability to run off the grid:
http://www.designboom.com/weblog/cat/8/view/7425/fetal-heart-rate-monitor-by-philip-goodwin-stefan-zwahlen-and-john-hutchinson.html

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