Abstract
We present a quantitative, non-interferometric, X-ray differential phase contrast imaging technique based on the edge illumination principle. We derive a novel phase retrieval algorithm which requires only two images to be acquired and verify the technique experimentally using synchrotron radiation. The technique is useful for planar imaging but is expected to be important for quantitative phase tomography also. The properties and limitations of the technique are studied in detail.
Highlights
Conventional radiographs record the projection, along the direction of X-ray propagation, of an object’s absorption properties
Non-interferometric, X-ray differential phase contrast imaging technique based on the edge illumination principle
The technique is useful for planar imaging but is expected to be important for quantitative phase tomography
Summary
Conventional radiographs record the projection, along the direction of X-ray propagation, of an object’s absorption properties. Since the pioneering work of Bonse and Hart [1], a variety of techniques have been developed to acquire X-ray images possessing contrast due to sample induced phase shifts [2,3,4,5,6,7]. Such images are referred to as phase contrast images. Techniques have been developed which are capable of quantifying the phase shift. Whilst being useful for planar imaging, are essential for performing quantitative phase tomography
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