“We have a diagnostic ultrasound machine that has enhanced capability to image kidney stones in the body,” said Dr. Michael Bailey, a principal engineer at APL-UW and co-investigator on the project. “We also have a capability that uses ultrasound waves coming right through the skin to push small stones or pieces of stones toward the exit of the kidney, so they will naturally pass, avoiding surgery.”
Read more about the process here:
http://www.nsbri.org/newsflash/indivArticle.asp?id=454&articleID=155