Abstract
X ray radiography and tomography are important tools in medicine as well as in life science and materials science. Not long ago an approach called in-line holography based on simple propagation became possible using partially coherent synchrotron beams like the ones available at the European Synchrotron Radiation Facility (ESRF). Theoretical and experimental work by Cloetens et al. [Appl. Phys. Lett 75, 2912 (1999)] have shown that quantitative retrieval of the optical phase, from a set of radiographs taken at different sample-to-detector distances, is feasible. Mathematically speaking we are dealing with a direct method based on linearization in order to solve an inverse nonlinear problem. The phase retrieval can be combined with classical tomography in order to obtain a three-dimensional representation of the object’s electron density (holotomography). In order to optimize the image contrast for the numerical phase retrieval process, we have carried out calculations resulting in an optimized choice of value and number of the sample-to-detector distances as well as of the photon energy. These results were then confirmed by experiments on the ESRF long beamline ID19.
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Dates
Type | When |
---|---|
Created | 20 years, 2 months ago (June 28, 2005, 6:01 p.m.) |
Deposited | 2 years ago (Aug. 1, 2023, 6:02 a.m.) |
Indexed | 4 days, 9 hours ago (Aug. 26, 2025, 3:13 a.m.) |
Issued | 20 years, 2 months ago (June 29, 2005) |
Published | 20 years, 2 months ago (June 29, 2005) |
Published Online | 20 years, 2 months ago (June 29, 2005) |
Published Print | 20 years, 1 month ago (July 1, 2005) |
@article{Zabler_2005, title={Optimization of phase contrast imaging using hard x rays}, volume={76}, ISSN={1089-7623}, url={http://dx.doi.org/10.1063/1.1960797}, DOI={10.1063/1.1960797}, number={7}, journal={Review of Scientific Instruments}, publisher={AIP Publishing}, author={Zabler, S. and Cloetens, P. and Guigay, J.-P. and Baruchel, J. and Schlenker, M.}, year={2005}, month=jun }