Imaging materials inside a bag (IMAGE) Optica Caption Researchers have shown that by combining x-ray imaging technologies, multiple contrast images (such as attenuation and dark field) containing complementary information can be attained and used to detect threatening materials hidden in bags and other complex scenarios. Credit Thomas Partridge, University College London Usage Restrictions None License Original 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.