Regional Fractional Expansion of Lungs (IMAGE) Monash University Caption Regional fractional expansion of the lung since the beginning of the breath is characterised as a fraction of the XV voxel. Coronal slices of the expansion at peak inspiration are shown for (a) a β-ENaC mouse (M3) and (b) a healthy littermate (M9). Credit Monash University 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.