A team of Swiss doctors is conducting about 100 autopsies a year without cutting open bodies, instead using devices including an optical 3D scanner that can detect up to 80 percent of the causes of death. Michael Thali, a professor at the University of Berne, and his colleagues have developed a system called "virtopsy," which since 2006 has been used to examine all sudden deaths or those of unnatural causes in the Swiss capital.