Journal
OPTICS EXPRESS
Volume 20, Issue 3, Pages 2789-2805Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.20.002789
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Funding
- DFG - Cluster of Excellence Munich-Centre for Advanced Photonics
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Various X-ray phase-contrast imaging techniques have been developed and applied over the last twenty years in different domains, such as material sciences, biology and medicine. However, no comprehensive inter-comparison exists in the literature. We present here a theoretical study that compares three among the most used techniques: propagation-based imaging (PBI), analyzer-based imaging (ABI) and grating interferometry (GI). These techniques are evaluated in terms of signal-to-noise ratio, figure of merit and spatial resolution. Both area and edge signals are considered. Dependences upon the object properties (absorption, phase shift) and the experimental acquisition parameters (energy, system point-spread function etc.) are derived and discussed. The results obtained from this analysis can be used as the reference for determining the most suitable technique for a given application. (C) 2011 Optical Society of America
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