A dose-aware image quality metric for X-ray imaging is introduced and applied to breast tissue phase-contrast CT, showing large SNR gains from phase retrieval but low absolute quality due to CT ill-posedness.
It can be shown from eq.(B3), or from the results in (Gureyev et al., 2016), that 2 2 2 4 2 0[ ] (12 / ) / a pixSNR n , (C1) where 02k=
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Signal-to-noise and spatial resolution in in-line imaging. 2. Phase-contrast tomography
A dose-aware image quality metric for X-ray imaging is introduced and applied to breast tissue phase-contrast CT, showing large SNR gains from phase retrieval but low absolute quality due to CT ill-posedness.