Vibrational Photoacoustic (IMAGE) Purdue University Caption Researchers have developed a new type of imaging technology to diagnose cardiovascular disease and other disorders by measuring ultrasound signals from chemical bonds in molecules exposed to a pulsing laser. This "vibrational photoacoustic" image shows plaque in an arterial wall. Credit Purdue University Weldon School of Biomedical Engineering image/Han-Wei Wang and Ji-Xin Cheng 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.