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    Ultrasound stone repositioning facilitates passage

    Technique also provides useful diagnostic information, researchers report


    Learning curve to technology

    Moving stones using the technology is not as simple as shooting pool.

    "There is a learning curve to this technology. You have to be able to use renal ultrasound and visualize the path you want to move the stone. If you are aiming into a wall, the stone is not going to go anywhere. It can take some trial and error to move the stones," Dr. Harper said.

    The finding that a larger stone was actually a collection of smaller stones or fragments turned out to be a diagnostic advantage that was unanticipated. Such findings can lead to revisions of clinical management, Dr. Harper said.

    The study was funded by the National Space Biomedical Research Institute, a division of NASA, and the National Institutes of Health.

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