Viatronix Incorporated, a Stony Brook, New York, based company announced that its V3D-Colon software is used at the National Naval Medical Center where the President's annual physical was done. "Our software is being utilized at several DOD facilities since the landmark Virtual Colonoscopy clinical trial published in the New England Journal of Medicine back in December 2003," said Zaffar Hayat, President of Viatronix Incorporated.