X-ray phase imaging with a finite size source

Jing Cheng; Shensheng Han

doi:10.1117/12.364373

17 September 1999 X-ray phase imaging with a finite size source

Jing Cheng, Shensheng Han

Proceedings Volume 3863, 1999 International Conference on Biomedical Optics; (1999) https://doi.org/10.1117/12.364373
Event: International Symposium on Biomedical Optics, 1999, Wuhan, China

Abstract

A theoretical analysis of the x-ray phase imaging in the method of in-line holography setup with a finite size source is presented. Based on the transport of intensity equation (TIE) with a point source, we given an algorithm to quantitatively restore the phase from x-ray phase imaging with an incoherent finite size source. We show that the image intensity is a convolution of the source intensity distribution and the intensity got from the x-ray phase imaging with a point source. The algorithm needs the intensity distribution at the source plane, the plane just after the object and the image plane. Performing deconvolution and solving the TIE, the phase can be retrieved. Analytical investigation of a simple model suggests that our method is mainly applicable to the differential phase contrast case. Numerical examples are also presented.

Citation Download Citation

Jing Cheng and Shensheng Han "X-ray phase imaging with a finite size source", Proc. SPIE 3863, 1999 International Conference on Biomedical Optics, (17 September 1999); https://doi.org/10.1117/12.364373

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