Advanced Monte Carlo application for in-silico clinical trials in x-ray breast imaging

2020 ◽  
Author(s):  
Antonio Sarno ◽  
Giovanni Mettivier ◽  
Francesca di Franco ◽  
Gianfranco Paternò ◽  
Angelo Taibi ◽  
...  
Keyword(s):  
Clinical Trials ◽  
Monte Carlo ◽  
In Silico ◽  
Breast Imaging ◽  
X Ray

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

scholarly journals Monte Carlo dosimetry for forthcoming clinical trials in x-ray microbeam radiation therapy

2010 ◽  
Vol 55 (15) ◽  
pp. 4375-4388 ◽  
Author(s):  
I Martínez-Rovira ◽  
J Sempau ◽  
J M Fernández-Varea ◽  
A Bravin ◽  
Y Prezado
Keyword(s):  
Clinical Trials ◽  
Monte Carlo ◽  
Radiation Therapy ◽  
X Ray ◽  
Microbeam Radiation Therapy

The Napoli-Varna-Davis project for virtual clinical trials in X-ray breast imaging

2019 ◽  
Author(s):  
Giovanni Mettivier ◽  
Antonio Sarno ◽  
Francesca di Franco ◽  
Kristina Bliznakova ◽  
Zhivko Bliznakov ◽  
...  
Keyword(s):  
Clinical Trials ◽  
Breast Imaging ◽  
X Ray

GEANT4 Monte Carlo simulations for virtual clinical trials in breast X-ray imaging: Proof of concept

2020 ◽  
Vol 74 ◽  
pp. 133-142 ◽  
Author(s):  
F. di Franco ◽  
A. Sarno ◽  
G. Mettivier ◽  
A.M. Hernandez ◽  
K. Bliznakova ◽  
...  
Keyword(s):  
Clinical Trials ◽  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Proof Of Concept ◽  
X Ray ◽  
X Ray Imaging

Determination of Stoichiometry of GaAs Component in (Gaas)Ge Epitaxially Grown Thin Films by Electron Microprobe X-Ray Analysis

1990 ◽  
Vol 48 (2) ◽  
pp. 264-265
Author(s):  
D. R. Liu ◽  
S. S. Shinozaki ◽  
R. J. Baird
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Compound Semiconductors ◽  
Energy Dispersive Analysis ◽  
X Ray ◽  
Metastable Alloys ◽  
Lower Voltage

The epitaxially grown (GaAs)Ge thin film has been arousing much interest because it is one of metastable alloys of III-V compound semiconductors with germanium and a possible candidate in optoelectronic applications. It is important to be able to accurately determine the composition of the film, particularly whether or not the GaAs component is in stoichiometry, but x-ray energy dispersive analysis (EDS) cannot meet this need. The thickness of the film is usually about 0.5-1.5 μm. If Kα peaks are used for quantification, the accelerating voltage must be more than 10 kV in order for these peaks to be excited. Under this voltage, the generation depth of x-ray photons approaches 1 μm, as evidenced by a Monte Carlo simulation and actual x-ray intensity measurement as discussed below. If a lower voltage is used to reduce the generation depth, their L peaks have to be used. But these L peaks actually are merged as one big hump simply because the atomic numbers of these three elements are relatively small and close together, and the EDS energy resolution is limited.

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.

Sign in / Sign up

Export Citation Format

Share Document