The accuracy of this stereoscopic foreign-body locatordepends much on the precise calculation of the x-ray film. Patient's eyeball with variationofaxiallengthshould be…
Nevertheless, the creation of Galileo and the improvements to GPS open up all sorts of intriguing possibilities: people prone to heart attacks, or the frail elderly, could wear small and highly accurate locator devices combined with body sensors, which could call medical help in an emergency.