ET and CT Imaging (IMAGE) Johns Hopkins Medicine Caption Johns Hopkins Medicine researchers have shown that PET and CT imaging can be used to track, over time, if an anti-tuberculosis drug can reach TB bacteria nested inside cavities in the lungs. The CT scan at the top reveals the location of two lung cavities, while the bottom PET/CT image shows the failure of a radioactively tagged anti-TB drug (shown as colors) to get inside those cavities and attack the microbes they encase. Credit Johns Hopkins Medicine 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.