Abstract
X-ray grating interferometry CT (GI-CT) is an emerging imaging modality which provides three complementary contrasts that could increase the diagnostic content of clinical breast CT: absorption, phase, and dark-field. Yet, reconstructing the three image channels under clinically compatible conditions is challenging because of severe ill-conditioning of the tomographic reconstruction problem. In this work we propose to solve this problem with a novel reconstruction algorithm that assumes a fixed relation between the absorption and the phase-contrast channel to reconstruct a single image by automatically fusing the absorption and phase channels. The results on both simulations and real data show that, enabled by the proposed algorithm, GI-CT outperforms conventional CT at a clinical dose.
Original language | English |
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Pages (from-to) | 9052-9071 |
Number of pages | 20 |
Journal | Optics Express |
Volume | 31 |
Issue number | 5 |
DOIs | |
Publication status | Published - 24 Feb 2023 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics