Penn -- New Lung Imaging Techniques (IMAGE) University of Pennsylvania School of Medicine Caption This series of pictures, taken by Penn imaging researchers, show an animal lung captured with the new hyperpolarized MRI technique now being studied. A liquid solution containing Carbon-13 was injected into the bloodstream. The MRI picks up the signal as the Carbon-13 moves moves through the lung. Looking at these images provides information about localized blood flow in the lungs. Credit Courtesy: University of Pennsylvania School of 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.