Ultrasound device (IMAGE) Massachusetts Institute of Technology Caption On the left of the photo, a yellow strip-cable has a green circuit board on one end, and a small ultrasound tracker on the other. On the right, the white device is teardrop shaped and has a hexagonal grid of holes where the tracker can be placed. Credit Canan Dagdeviren Usage Restrictions Credit must be given to the creator. No derivatives or adaptations of the work are permitted. License CC BY-ND 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.