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An iterative method for robust in-line phase contrast imaging

DOI: 10.1088/1367-2630/18/4/043003 DOI Help

Authors: Aidan J Carroll (La Trobe University) , Grant A Van Riessen (La Trobe University) , Eugeniu Balaur (La Trobe University) , Igor Dolbnya (Diamond Light Source) , Giang Tran-nhan (La Trobe University) , Andrew G Peele (La Trobe University)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: New Journal Of Physics , VOL 18

State: Published (Approved)
Published: April 2016
Diamond Proposal Number(s): 9625

Open Access Open Access

Abstract: We present an iterative near-field in-line phase contrast method that allows quantitative determination of the thickness of an object given the refractive index of the sample material. The iterative method allows for quantitative phase contrast imaging in regimes where the contrast transfer function (CTF) and transport of intensity equation (TIE) cannot be applied. Further, the nature of the iterative scheme offers more flexibility and potentially allows more high-resolution image reconstructions when compared to TIE method and less artefacts when compared to the CTF method. While, not addressed here, extension of our approach in future work to broadband illumination will also be straightforward as the wavelength dependence of the refractive index of an object can be readily incorporated into the iterative approach.

Journal Keywords: x-ray microscope, iterative algorithm, near field, phase contrast imaging

Subject Areas: Chemistry

Instruments: B16-Test Beamline

Added On: 07/04/2016 12:02

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