Spiral scanning X-ray fluorescence computed tomography

• DOI: 10.1364/oe.25.023424
• Publication Date: 2017-09-15T19:24:50Z
• Authors: 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
• Keywords: 0301 basic medicine; 03 medical and health sciences; 02 engineering and technology; info:eu-repo/classification/ddc/530; 0210 nano-technology; 530

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