Journal ArticleDOI
Reconstructing x-ray fluorescence microtomograms
TLDR
In this article, a self-consistently estimated attenuation of the fluorescence radiation is used to estimate the attenuation inside the sample, which allows one to reconstruct relative concentrations.Abstract:
X-ray fluorescence microtomography allows one to map element distributions inside a sample with high sensitivity and resolutions in the micrometer range. Quantitative reconstruction of the element concentrations from the fluorescence data requires correction for the attenuation inside the sample. However, the attenuation of the fluorescence radiation is not directly accessible by experiment. The method described self-consistently estimates this attenuation and allows one to reconstruct relative concentrations. This is demonstrated on numerical as well as experimental data. A measure for the quality of the reconstruction is given.read more
Citations
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Journal ArticleDOI
Three-dimensional trace element analysis by confocal X-ray microfluorescence imaging.
Laszlo Vincze,Bart Vekemans,Frank E. Brenker,Gerald Falkenberg,Karen Rickers,Andrea Somogyi,Michael Kersten,Freddy Adams +7 more
TL;DR: A three-dimensional variant of scanning micro X-ray fluorescence (XRF) is described and evaluated at the ID18F instrument of the European Synchrotron Radiation Facility (ESRF), based on confocal excitation/detection using a polycapillary half-lens in front of the energy-dispersive detector.
Journal ArticleDOI
Probing the structure of heterogeneous diluted materials by diffraction tomography.
TL;DR: The potential of coupling pencil-beam tomography with X-ray diffraction to examine unidentified phases in nanomaterials and polycrystalline materials is shown, enabling a multimodal analysis of prime importance in materials science, chemistry, geology, environmental science, medical science, palaeontology and cultural heritage.
Journal ArticleDOI
Internal elemental microanalysis combining x-ray fluorescence, Compton and transmission tomography
Bruno Golosio,Alexandre Simionovici,Andrea Somogyi,Laurence Lemelle,Marina Chukalina,Antonio Brunetti +5 more
TL;DR: In this paper, an approach to the reconstruction problem is presented, which integrates the information from the three types of signals, i.e., Compton and Rayleigh scattering, for obtaining information on the internal elemental composition of the sample.
Journal ArticleDOI
X-ray fluorescence computed tomography (XFCT) imaging of gold nanoparticle-loaded objects using 110 kVp x-rays
TL;DR: Several modification strategies are suggested, such as the adoption of the quasi-monochromatic cone/fan x-ray beam and XFCT-specific spatial filters or pinhole detector collimators, in order to establish the ultimate feasibility of a bench-topXFCT system for GNP-based preclinical molecular imaging applications.
Journal ArticleDOI
Hard X-ray fluorescence tomography — an emerging tool for structural visualization
Martin D. de Jonge,Stefan Vogt +1 more
TL;DR: Several complementary approaches to X-ray fluorescence tomography will be routinely available to the biologist in the near future, and these are discussed and applications of biological relevance are reviewed.
References
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Journal ArticleDOI
Incoherent-scatter computed tomography with monochromatic synchrotron x ray: feasibility of multi-CT imaging system for simultaneous measurement-of fluorescent and incoherent scatter x rays
Tetsuya Yuasa,Masahiro Akiba,Tohru Takeda,Masahiro Kazama,Atsunori Hoshino,Yuuki Watanabe,Kazuyuki Hyodo,F.A. Dilmanian,Takao Akatsuka,Yuji Itai +9 more
TL;DR: In this article, a new system of incoherent scatter computed tomography (ISCT) using monochromatic synchrotron X rays was described, and its potential to be used in in vivo imaging for medical use.
Proceedings ArticleDOI
Fluorescence microtomography: external mapping of elements inside biological samples
Christian G. Schroer,Johannes Tuemmler,Til Florian Guenzler,Bruno Lengeler,Walter H. Schroeder,Arnd J. Kuhn,Alexandre Simionovici,Anatoly Snigirev,Irina Snigireva +8 more
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Proceedings ArticleDOI
Monte Carlo simulation of X-ray fluorescence and scattering tomography experiments
TL;DR: In this paper, a detailed Monte Carlo (MC) simulation of X-ray fluorescence, Compton and Rayleigh scattering tomography was developed for aiding the optimization and evaluation of synchrotron radiation induced X-Ray fluorescence (SRXRF) experiments.
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