Fingertip Monitor Measures Heart Disease Risk (IMAGE) University of Houston Caption VENDYS, a device mechanical engineering professors Stanley Kleis and Ralph Metcalfe helped develop, is allowing doctors to monitor how changes in blood flow affect finger temperature to measure an individual’s risk for cardiovascular disease. Credit Thomas Shea Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.