Abstract

X-ray tomography of samples containing both weakly and strongly absorbing materials are necessary in material and biomedical imaging. Extending the validity of the phase-attenuation duality (PAD) method, the propagation-based phase-contrast computed tomography (PPCT) of a sample with hybrid compositions of both the light and dense components with 60 keV of synchrotron radiation is investigated. The experimental results show that the PAD-based PPCT is effective in imaging both the weakly and strongly absorbing components simultaneously. Compared with the direct PPCT technique, the PAD-based PPCT technique demonstrates its excellent capability in material discrimination and characterization. In addition, the PAD-based PPCT exhibits a striking performance on the image contrast enhancement and noise suppression. Therefore, this technique is useful for material and biomedical imaging applications, especially when the radiation dose involved imposes a serious constraint.

© 2012 Chinese Optics Letters

Phase retrieval in quantitative x-ray microtomography with a single sample-to-detector distance

R. C. Chen, H. L. Xie, L. Rigon, R. Longo, E. Castelli, and T. Q. Xiao
Opt. Lett. 36(9) 1719-1721 (2011)

Comparison of single distance phase retrieval algorithms by considering different object composition and the effect of statistical and structural noise

R. C. Chen, L. Rigon, and R. Longo
Opt. Express 21(6) 7384-7399 (2013)

Quantitative X-ray phase-contrast computed tomography at 82 keV

Marian Willner, Martin Bech, Julia Herzen, Irene Zanette, Dieter Hahn, Johannes Kenntner, Juergen Mohr, Alexander Rack, Timm Weitkamp, and Franz Pfeiffer
Opt. Express 21(4) 4155-4166 (2013)

Optimization of reconstructed quality of hard x-ray phase microtomography

Huiqiang Liu, Xizeng Wu, and Tiqiao Xiao
Appl. Opt. 54(18) 5610-5618 (2015)

Phase retrieval from one single phase contrast x-ray image

Xizeng Wu and Aimin Yan
Opt. Express 17(13) 11187-11196 (2009)