The Divison of Physiological Imaging is a group of researchers, physicians, and technical staff. We are working together to develop imaging techniques and image analysis tools for the purpose of advancing our understanding of physiologic processes both from the perspective of advancing basic scientific understandings as well as advancing the state of the art in diagnostic medicine. A specific focus of the group is structure-function relationships of the lung, but individual research interests of the group go well beyond this single organ system. An important growing interest of the group includes the extension of our imaging and image analysis methods down to resolution levels on the order of 5-30 microns, allowing for the investigations of structural and functional alterations down to the alveolar level in the lung.