Ultrasound Device Identifies High-Risk Arterial Plaque (image) North Carolina State University Caption Researchers from North Carolina State University and the University of North Carolina at Chapel Hill have developed an ultrasound device to help identify arterial plaque that is at high risk of breaking off and causing heart attack or stroke. Credit Xiaoning Jiang, North Carolina State University Usage Restrictions Photo credit must be given. 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.