SU-DD-A4-05: Characterization of X-Ray Scatter and Glandular Dose in Digital Tomosynthesis for Breast Imaging Using Monte Carlo Simulations

2006 ◽  
Vol 33 (6Part2) ◽  
pp. 1990-1990
Author(s):  
I Sechopoulos ◽  
S Suryanarayanan ◽  
S Vedantham ◽  
A Karellas
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Breast Imaging ◽  
Digital Tomosynthesis ◽  
X Ray

Monte Carlo simulations for the characterization of position-sensitive x-ray detectors dedicated to Compton polarimetry

2011 ◽  
Vol T144 ◽  
pp. 014034 ◽  
Author(s):  
G Weber ◽  
H Bräuning ◽  
R Märtin ◽  
U Spillmann ◽  
Th Stöhlker
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
X Ray ◽  
Compton Polarimetry ◽  
Position Sensitive

Characterization of Polymer-Silica Nanocomposite Particles with Core–Shell Morphologies using Monte Carlo Simulations and Small Angle X-ray Scattering

Langmuir ◽  
2011 ◽  
Vol 27 (13) ◽  
pp. 8075-8089 ◽  
Author(s):  
Jennifer A. Balmer ◽  
Oleksandr O. Mykhaylyk ◽  
Andreas Schmid ◽  
Steven P. Armes ◽  
J. Patrick A. Fairclough ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Small Angle ◽  
Core Shell ◽  
Nanocomposite Particles ◽  
X Ray ◽  
X Ray Scattering ◽  
Silica Nanocomposite ◽  
Ray Scattering

Low-voltage EDS of magnesium ferrite Dendrites in a FEG-SEM

1996 ◽  
Vol 54 ◽  
pp. 478-479
Author(s):  
Matthew T. Johnson ◽  
Ian M. Anderson ◽  
Jim Bentley ◽  
C. Barry Carter
Keyword(s):  
Monte Carlo ◽  
Quantitative Analysis ◽  
Monte Carlo Simulations ◽  
Cross Section ◽  
Spatial Resolution ◽  
Low Voltage ◽  
Magnesium Ferrite ◽  
X Ray ◽  
Interaction Volume ◽  
Ferrite Spinel

Energy-dispersive X-ray spectrometry (EDS) performed at low (≤ 5 kV) accelerating voltages in the SEM has the potential for providing quantitative microanalytical information with a spatial resolution of ∼100 nm. In the present work, EDS analyses were performed on magnesium ferrite spinel [(MgxFe1−x)Fe2O4] dendrites embedded in a MgO matrix, as shown in Fig. 1. spatial resolution of X-ray microanalysis at conventional accelerating voltages is insufficient for the quantitative analysis of these dendrites, which have widths of the order of a few hundred nanometers, without deconvolution of contributions from the MgO matrix. However, Monte Carlo simulations indicate that the interaction volume for MgFe2O4 is ∼150 nm at 3 kV accelerating voltage and therefore sufficient to analyze the dendrites without matrix contributions.Single-crystal {001}-oriented MgO was reacted with hematite (Fe2O3) powder for 6 h at 1450°C in air and furnace cooled. The specimen was then cleaved to expose a clean cross-section suitable for microanalysis.

scholarly journals Modular MA-XRF Scanner Development in the Multi-Analytical Characterisation of a 17th Century Azulejo from Portugal

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1913
Author(s):  
Sergio Augusto Barcellos Lins ◽  
Marta Manso ◽  
Pedro Augusto Barcellos Lins ◽  
Antonio Brunetti ◽  
Armida Sodo ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
17Th Century ◽  
Scanning System ◽  
X Ray ◽  
Portable Instruments ◽  
Complementary Techniques ◽  
Non Destructive ◽  
Suitable Technique ◽  
Cobalt Blue

A modular X-ray scanning system was developed, to fill in the gap between portable instruments (with a limited analytical area) and mobile instruments (with large analytical areas, and sometimes bulky and difficult to transport). The scanner has been compared to a commercial tabletop instrument, by analysing a Portuguese tile (azulejo) from the 17th century. Complementary techniques were used to achieve a throughout characterisation of the sample in a complete non-destructive approach. The complexity of the acquired X-ray fluorescence (XRF) spectra, due to inherent sample stratigraphy, has been resolved using Monte Carlo simulations, and Raman spectroscopy, as the most suitable technique to complement the analysis of azulejos colours, yielding satisfactory results. The colouring agents were identified as cobalt blue and a Zn-modified Naples-yellow. The stratigraphy of the area under study was partially modelled with Monte Carlo simulations. The scanners performance has been compared by evaluating the images outputs and the global spectrum.

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