1. Division of Functional and Diagnostic Imaging Research, Department of Radiology; Kobe University Graduate School of Medicine; Kobe Hyogo Japan
2. Advanced Biomedical Imaging Research Center; Kobe University Graduate School of Medicine; Kobe Hyogo Japan
3. Diagnostic and Interventional Radiology; University Medical Center Heidelberg, Translational Lung Research Center/German Center of Lung Research; Heidelberg Germany
4. Center for Pulmonary Functional Imaging, Department of Radiology; Brigham and Women's Hospital, Boston and Harvard Medical School; Boston Massachusetts USA
5. Department of Radiology; University of Ulsan College of Medicine; Seoul Korea
6. Division of Cardiothoracic Radiology, Department of Radiology; Asan Medical Center; Seoul Korea
7. Edinburgh Imaging, Queen's Medical Research Institute; University of Edinburgh; Edinburgh UK