Going Beyond Ultrasound Limitations (IMAGE) Nanyang Technological University Caption NTU's new ultrasound device is pictured firing around ten pulses per second through the 3-D printed lens, generating enhanced ultrasound or photoacoustic waves which current ultrasound machines are unable to do. Credit NTU Singapore 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.