Comparison of two x-ray phase-contrast imaging methods with a microfocus source
2013 (English)In: Optics Express, ISSN 1094-4087, Vol. 21, no 25, 30183-30195 p.Article in journal (Refereed) Published
We present a comparison for high-resolution imaging with a laboratory source between grating-based (GBI) and propagation-based (PBI) x-ray phase-contrast imaging. The comparison is done through simulations and experiments using a liquid-metal-jet x-ray microfocus source. Radiation doses required for detection in projection images are simulated as a function of the diameter of a cylindrical sample. Using monochromatic radiation, simulations show a lower dose requirement for PBI for small object features and a lower dose for GBI for larger object features. Using polychromatic radiation, such as that from a laboratory microfocus source, experiments and simulations show a lower dose requirement for PBI for a large range of feature sizes. Tested on a biological sample, GBI shows higher noise levels than PBI, but its advantage of quantitative refractive index reconstruction for multi-material samples becomes apparent.
Place, publisher, year, edition, pages
2013. Vol. 21, no 25, 30183-30195 p.
Computed-Tomography, Grating Interferometer, Noise, Propagation, Performance, Retrieval, Signal, Jet, CT
Other Physics Topics
IdentifiersURN: urn:nbn:se:kth:diva-139423DOI: 10.1364/OE.21.030183ISI: 000328575700007ScopusID: 2-s2.0-84890505484OAI: oai:DiVA.org:kth-139423DiVA: diva2:687111
FunderSwedish Research Council
QC 201401132014-01-132014-01-132016-09-15Bibliographically approved