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IEAP - Institute of Experimental and Applied Physics CTU - Czech Technical University in Prague
CTU - Czech Technical University in Prague
Publication  > Articles in Impacted Journals  > 'Single grating method for low dose 1-D and 2-D phase contrast X-ray imaging'
Single grating method for low dose 1-D and 2-D phase contrast X-ray imaging

Author

Year
2011

Scientific journal
Journal of Instrumentation, 6 C01073, doi: 10.1088/1748-0221/6/01/C01073

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Abstract
X-ray phase contrast imaging (XPCI) using a single absorption grating and a hybrid semiconductor pixel detector is a newly introduced approach with great potential for application in medicine, biology and material research. In comparison with a conventional grating interferometer technique, which requires a multiple-exposure (phase-stepping) procedure, our method is greatly simplified, because both phase gradient and absorption images are obtained from just one exposure. Consequently, the approach can significantly reduce the time-consuming scanning and also possibly the unnecessary dose. Examples of application of the single-grating approach as an imaging tool for investigations in biology are presented. Particularly, we present the extension of our 1-D single grating method to a two-direction sensitive technique. The novel 2-D sensitive XPCI method is based on precise sub-pixel position determination of the X-ray pattern projected by the two-dimensional transmission grating directly from the pattern image. In a single exposure, phase gradient images in two perpendicular directions together with the conventional attenuation image are produced. Results of the proof-of-concept experiment are presented.

Cite article as:
M. Kroupa, "Single grating method for low dose 1-D and 2-D phase contrast X-ray imaging", Journal of Instrumentation, 6 C01073, doi: 10.1088/1748-0221/6/01/C01073 (2011)

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