I really like the Voluson i, it's been the only player in the market for portable 4D ultrasound machines. However, some new players are coming out and I'll put some reviews of them in the next few months as I've had time to see them in action.
This video outlines some of the highs and lows of the system...I've always disliked the user interface and I may address it in a different video. There are quite a few things about it, but those limitations can be overcome after a few weeks of use. The 4D imaging is provides is enough to balance the good with the bad. Plus, all the customers who buy their system from us at GPS Medical get a free training DVD on the Voluson i. It provides a full overview of the system.
In the following video, I've included 4D images as well as MSK (musculoskeletal), vascular, podiatric, and thyroid images. Remember that these are images that I did myself, sitting at my desk while testing these machines or doing training videos. These are not clinical images from the manufacturer. 4D images are done on a baby phantom, however. Last I checked, I'm not pregnant.
President, GPS Medical, Inc.