Dual-modality endoscopic system (IMAGE) Optica Caption : Schematic of the intrauterine dual-modality endoscopic system. The system combines ultrasound with optical coherence tomography (OCT) to visualize structural features of the endometrium with a probe measuring 1.2 mm across. Credit Xiaojing Gong, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences 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.