Abstract
Phase retrieval is the key to quantitative x-ray phase-contrast imaging. To retrieve the phase image of an x-ray wave field, in general one needs multiple phase-contrast images. We have made a new observation of phase-attenuation duality for soft tissues, and we show how only a single phase-contrast image is needed for successful phase retrieval based on this duality. The phase-retrieval formula based on a single phase-contrast image of inhomogeneous soft tissue is derived and presented. We show the striking enhancement of the tissue contrast in simulated phase images that this new approach produces.
© 2005 Optical Society of America
Full Article | PDF ArticleMore Like This
Xizeng Wu and Hong Liu
Opt. Express 13(16) 6000-6014 (2005)
Xizeng Wu and Aimin Yan
Opt. Express 17(13) 11187-11196 (2009)
Muhammad U. Ghani, Aimin Yan, Laurie. L. Fajardo, Xizeng Wu, and Hong Liu
Opt. Express 29(17) 26538-26552 (2021)