Figure 2
From: High resolution propagation-based lung imaging at clinically relevant X-ray dose levels
Comparison of the image quality of a healthy pig lung at different dose levels. To simulate lower entrance doses reconstructions with less angular projections are shown. (a) Full 8100 projections, entrance dose 10 mGy. (b) Half 4050 projections, entrance dose 5 mGy. (c) Quarter 2025 projections, entrance dose 2.5 mGy. (d) Full 8100 projections, entrance dose 10 mGy, no phase retrieval applied. (e), (f), (g), (h) show zoomed in parts of the images above. No visible difference are found between full and half dose while for a quarter of the dose the image quality diminishes a bit. Without phase retrieval the lung structure can barely be identified.
