Ultrasound Measurements of Blood Vessel Function (image) Norwegian University of Science and Technology Share Print E-Mail Caption Here are the kinds of images that researchers obtained from their subjects during the trial. The red/orange line is blood flow though a blood vessel. Credit Harald Engan, Mid Sweden University Usage Restrictions With proper credit for photographer Share Print E-Mail 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.