Fig. 4
From: Grating-based x-ray dark-field CT for lung cancer diagnosis in mice
Typical slices of attenuation and dark-field modality of the day 8 (a-d), day 12 (e–h), and day 16 (i–l) groups. For each group, a yellow rectangle was drawn on both images at the same place to mark the ROI, and the areas were zoomed and then median-filtered with a radius of 2 pixels. The green ROI indicates the nodules, while the yellow region of interest indicates the normal lung parenchyma