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David M. Billmire
Researcher at University of Chicago
Publications - 3
Citations - 191
David M. Billmire is an academic researcher from University of Chicago. The author has contributed to research in topics: Correction for attenuation & Iterative reconstruction. The author has an hindex of 3, co-authored 3 publications receiving 180 citations.
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Journal ArticleDOI
Reduction of noise-induced streak artifacts in X-ray computed tomography through spline-based penalized-likelihood sinogram smoothing
TL;DR: It is found that the statistically principled sinogram smoothing approach is naturally adaptive-it will smooth more variable measurements more heavily than it does less variable measurements, and significantly reduces streak artifacts and noise levels without comprising image resolution.
Journal ArticleDOI
Penalized-likelihood image reconstruction for x-ray fluorescence computed tomography
TL;DR: A penalized-likelihood image reconstruction strategy that alternates between updating the distribution of a given element and updating the attenuation map for that element's fluorescence X-rays and is guaranteed to increase the penalized likelihood at each iteration.
Proceedings ArticleDOI
Penalized-likelihood image reconstruction for x-ray fluorescence computed tomography with unknown fluorescence attenuation maps
TL;DR: In this paper, an alternating update iterative reconstruction algorithm based on maximizing a penalized Poisson likelihood objective function was developed to produce qualitatively and quantitatively accurate reconstructed images of numerical phantoms even in the face of severe attenuation.