An Analytical-empirical Calculation of Linear Attenuation Coefficient of Megavoltage Photon Beams [PDF]
Journal of Biomedical Physics and Engineering, 2017 Background: In this study, a method for linear attenuation coefficient calculation was introduced. Methods: Linear attenuation coefficient was calculated with a new method that base on the physics of interaction of photon with matter, mathematical ...
Seif F. +2 more
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Linear attenuation coefficient measurement in polymer composite
Iraqi Journal of Physics, 2019 Linear attenuation coefficient of polymer composite for beta particles and bremsstrahlung ray were investigated as a function of the absorber thickness and energy.
Nesreen B. Al-Rawi
doaj +5 more sources
A method to determine the gamma-ray linear attenuation coefficient
Annals of Nuclear Energy, 2011 Abstract In this work, gamma-ray linear attenuation coefficients of the materials such as Pb, Fe, Cu and Al were determined by means of traditional energy method and the developed timing detection technique. 1.33 MeV-energy radiation emitted from 60 Co radioisotope was used in the experiments.
C ÇELİKTAŞ
exaly +4 more sources
A Novel Hierarchical Extreme Machine-Learning-Based Approach for Linear Attenuation Coefficient Forecasting [PDF]
Entropy, 2023 The development of reinforced polymer composite materials has had a significant influence on the challenging problem of shielding against high-energy photons, particularly X-rays and γ-rays in industrial and healthcare facilities.
Giuseppe Varone +9 more
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Statistical characterization of the linear attenuation coefficient in polychromatic CT scans. [PDF]
Med Phys, 2020 PurposeTo provide a unifying statistical model that characterizes the integrated x‐ray intensity at the detector after logarithmic transformation and can be extended to the characterization of computed tomography (CT) numbers in the reconstructed image.MethodsWe study the statistical characteristics of polyenergetic x‐ray beams in the detector. Firstly,
Vegas G, San José Estépar R.
europepmc +4 more sources
Linear attenuation coefficients of tissues from 1keV to 150keV
Radiation Physics and Chemistry, 2014 Abstract The linear attenuation coefficients and three interaction processes have been computed for liver, kidney, muscle, fat and for a range of x-ray energies from 1 keV to 150 keV. Molecular photoelectric absorption cross sections were calculated from atomic cross section data.
Aysun Boke
exaly +4 more sources
Fat Content Quantification with US Attenuation Coefficient: Phantom Correlation with MRI Proton Density Fat Fraction [PDF]
DiagnosticsObjective: The aim of this study was to evaluate the consistency and reproducibility of attenuation coefficient (AC) measurements using different commercial ultrasound (US) across via a phantom experiment to investigate the relationship between the AC ...
Rongying Chen +9 more
doaj +2 more sources
Development and evaluation of PU@PbO/B4C composite for gamma and neutron radiation shielding [PDF]
Scientific ReportsIn the current study, we investigate the performance of polyurethane foam loaded with an equal combination of boron carbide (B4C) and lead oxide (PbO) to develop a dual functional polymer composite for radiation shielding applications.
Mahdieh Mokhtari Dorostkar +1 more
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Investigation of gamma radiation shielding features for modified structural materials for nuclear energy and nuclear medicine [PDF]
Nuclear Technology and Radiation Protection, 2023 In this paper, shielding characteristics of three concrete samples with different B4C,Fe3O4,and BaSO4 contents were examined by determining their theoretical and experimental mass attenuation coefficients at photon energies of 15 MeV.
Zaripova Yuliya +4 more
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Investigation of Gamma Ray Buildup Factor for some Shielding Absorber
Cumhuriyet Science Journal, 2022 The purpose of this research is to observe and understand the processes by which gamma rays are attenuated in passing through absorber, and the effects of shielding geometry.
Hiwa Mohammad Qadr
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