Fig. 3.

Fusion images of attenuation and dark-field CT of mouse with emphysematous lung (a–f) and mouse with fibrotic lung (g–l) at different positions in the three-dimensional volume. Emphysema case: Dark red areas indicating regions with strongly reduced scattering abilities (but little absorption) appear preferentially in the peripherals of the lung (white arrows). a–c: Anterior to posterior coronal slices. d–f: Cranial to caudal axial slices. Fibrosis case: Red areas exhibit reduced scattering ability than bright yellow regions and match here with excessive tissue marked by enhanced absorption in attenuation CT. Arrows indicate the preferential spreading of the scarring along the bronchi. g–i: Anterior to posterior coronal slices. j–l: Cranial to caudal axial slices.