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Reconstruction strategy suited to x-ray diffraction tomography

1995; Optica Publishing Group; Volume: 12; Issue: 2 Linguagem: Inglês

10.1364/josaa.12.000291

1520-8532

Jason A. Grant, Michael J. Morgan, J. Davis, P.N.T. Wells,

Radiation Dose and Imaging

In the past, filtered backprojection has been successfully applied to the problem of reconstructing images from x-ray diffraction tomographic data; however, this technique is applicable only under conditions of low x-ray attenuation. We present a more suitable reconstruction strategy for x-ray diffraction tomography, which corrects for x-ray attenuation by using the maps of the linear attenuation coefficient that are generated by x-ray transmission computed tomography. Previously, neither the iterative reconstruction approaches nor attenuation corrections had been applied to x-ray diffraction tomographic data. A Monte Carlo simulation study of photon transport is utilized for evaluating the efficacy of the attenuation-corrected iterative reconstruction algorithm.