Spiral scanning X-ray fluorescence computed tomography

Martin D. de Jonge, Andrew M. Kingston, Nader Afshar, Jan Garrevoet, Robin Kirkham, Gary Ruben, Glenn R. Myers, Shane J. Latham, Daryl L. Howard, David J. Paterson, Christopher G. Ryan, Gawain McColl

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Scannin X-ra fluorescence tomo ra h was once considered im ractical due to prohibitive measurement time requirements but is now common for investigating metal distributions within small systems. A recent look-ahead to the possibilities of 4th-generation synchrotron light sources [J. Synchrotron. Radiat. 21, 1031 (2014)] raised the possibility of a spiral-scanning measurement scheme where motion overheads are almost completely eliminated. Here we demonstrate the spiral scanning measurement and use Fourier ring correlation analysis to interrogate sources of resolution degradation. We develop an extension to the Fourier ring correlation formalism that enables the direct determination of the resolution from the measured sinogram data, greatly enhancing its power as a diagnostic tool for computed tomography.

Original languageEnglish
Pages (from-to)23424-23436
Number of pages13
JournalOptics Express
Issue number19
Publication statusPublished - 18 Sep 2017

Cite this

de Jonge, M. D., Kingston, A. M., Afshar, N., Garrevoet, J., Kirkham, R., Ruben, G., Myers, G. R., Latham, S. J., Howard, D. L., Paterson, D. J., Ryan, C. G., & McColl, G. (2017). Spiral scanning X-ray fluorescence computed tomography. Optics Express, 25(19), 23424-23436. https://doi.org/10.1364/OE.25.023424