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
An Iterative Self-Absorption Correction Algorithm for 3D Ptycho-Fluorescence Imaging
Silvia Cipiccia,Darren Batey,Xiaowen Shi,Stephen W. T. Price,Aaron Parsons,Kaz Wanelik,Andrew Wilson,Robert Crook,Robert Raja,Christoph Rau +9 more
TL;DR: Huang et al. as mentioned in this paper presented an iterative self-absorption correction algorithm for quantitative x-ray fluorescence computed tomography, which is based on the Schroer study and combines fluorescence, transmission and Compton tomography.
Patent
Nondestructive sample imaging
Eugene M. Lavely,Adam J. Marcinuk,Amrita V. Masurkar,Paul R. Moffitt,Richman Michael S,Jonathan R. Takahashi,Tong Jonathan K,Chris L. Willis +7 more
TL;DR: In this paper, a system and method for imaging a sample having a complex structure (such as an integrated circuit) implements two modes of operation utilizing a common electron beam generator that produces an electron beam within a chamber.
Book ChapterDOI
Fluorescent X-Ray Computed Tomography Using Synchrotron Radiation Towards Molecular Imaging
Tetsuya Yuasa,Tohoru Takeda +1 more
TL;DR: The invention of a novel molecular imaging technique using non-radioactive imaging agencies with high-contrast and high spatial resolutions has been eagerly waited for.
Proceedings ArticleDOI
Monotonic penalized-likelihood image for X-ray fluorescence computed tomography
P.J. La Riviere,Phillip Vargas +1 more
TL;DR: In this paper, the authors derived a monotonic penalized-likelihood algorithm for image reconstruction in X-ray fluorescence CT (XFCT) when the attenuation maps at the energies of the fluorescence X-rays are unknown.
Journal ArticleDOI
Synchrotron XFM tomography for elucidating metals and metalloids in hyperaccumulator plants
TL;DR: In this paper , the internal distribution of hyper-accumulated elements in hyperaccumulator plant species is revealed using X-ray fluorescence microscopy-computed tomography (XFM-CT).
References
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Journal ArticleDOI
A microscope for hard x rays based on parabolic compound refractive lenses
Bruno Lengeler,Christian G. Schroer,M. Richwin,J. Tümmler,Michael Drakopoulos,Anatoly Snigirev,Irina Snigireva +6 more
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Journal ArticleDOI
Fluorescent computer tomography: a model for correction of X-ray absorption
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Journal ArticleDOI
X-ray fluorescent computer tomography with synchrotron radiation
G.-F. Rust,J. Weigelt +1 more
TL;DR: In this paper, the authors describe the possibility of a quantitative calculation of the distribution of a nonradioactive element within a selected cross section with nondestructive methods with the help of X-ray fluorescent tomography (XFCT) in order to increase measurement sensitivity.
Journal ArticleDOI
Synchrotron hard x-ray microprobe: Fluorescence imaging of single cells
Sylvain Bohic,Alexandre Simionovici,A. A. Snigirev,Richard Ortega,Guillaume Devès,Dominique Heymann,Christian G. Schroer +6 more
TL;DR: In this paper, the authors used synchrotron-induced x-ray fluorescence (SXRF) in the hard X-ray range to image trace elements in single cells.
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High resolution tomography with chemical specificity
TL;DR: In this paper, a very fast method of computerized critical absorption tomography featuring ∼ 10 μm spatial resolution and high chemical sensitivity is described, which is especially suited to investigating small samples.
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