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The effective atomic number of dosimetric gels
Australasian Physics & Engineering Sciences in Medicine, 2008 Radiological properties of gel dosimeters and phantom materials are often compared against each other and against water or tissue by consideration parameters including their effective atomic number, Zeff. Effective atomic numbers have been calculated for a range of ferrous-sulphate and polymeric gel dosimeters using mass attenuation coefficient data ...
Taylor, M +3 more
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X-ray energies for effective atomic number determination
Neuroradiology, 1976The measurement of the effective atomic number of a piece of material in vivo can be achieved using computed tomography. The precision of measurement of this parameter depends on the precision of measurement of the X-ray absorption coefficient at two energies and the separation of these energies.
R A Rutherford, B R Pullan, Isherwood I
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Effective atomic number and electron density of marble concrete
Journal of Radioanalytical and Nuclear Chemistry, 2012The effective atomic numbers (Z eff) and effective electron density (N e) of different type concrete have been measured and the results were compared with the calculation obtained using the mass attenuation coefficients (μ/ρ) obtained via XCOM in the photon energy range of 1 keV–100 GeV.
İskender Akkurt +2 more
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Radiation Physics and Chemistry, 2017
Abstract The photon interaction parameters such as mass attenuation coefficient, effective atomic number, effective electron density, buildup factor have been measured for Fe(NO3)3, V4O2, NaCO3·H2O, C6H5FeO7·H2O and CuCI compounds using 137Ba, 157Gd and 241Am γ-rays sources in stable geometry.
Levet, Aytaç, Özdemir, Yüksel
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Abstract The photon interaction parameters such as mass attenuation coefficient, effective atomic number, effective electron density, buildup factor have been measured for Fe(NO3)3, V4O2, NaCO3·H2O, C6H5FeO7·H2O and CuCI compounds using 137Ba, 157Gd and 241Am γ-rays sources in stable geometry.
Levet, Aytaç, Özdemir, Yüksel
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American Journal of Roentgenology, 2017 OBJECTIVE The purpose of this study was to assess the diagnostic accuracy of effective atomic number maps reconstructed from dual-energy contrast-enhanced data for discriminating between nonenhancing renal cysts and enhancing masses.
Achille Mileto +2 more
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Nuclear Instruments & Methods in Physics Research B, 2014 International audienceThis paper focuses on dual-energy X-ray computed tomography and especially the decomposition of the measured attenuation coefficient in a mass density and atomic number basis. In particular, the concept of effective atomic number is
Anne Bonnin, Valerie Kaftandjian
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Radiation Physics and Chemistry, 2021 © 2020 Elsevier LtdMonte Carlo simulation of the Rayleigh/Compton scattering method for effective atomic number determination with MCNP (version 6.2) was proposed.
Ozan Toker +2 more
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Calculations of effective atomic number
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2007We will present and discuss effective atomic number (Zeff) obtained by different methods of calculations. There is no unique relation between computed values. This observation led us to the conclusion that any Zeff is valid only for given process. We will compare Zeff obtained by following methods: 1. Variational method (Slater), 2.
Kaliman, Zoran +2 more
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The effective atomic number of mix D
The British Journal of Radiology, 1979It is well known that mix D, which was introduced by Jones and Raine (1949), has been widely used as a phantom material for photons and electrons in radiotherapy. By adding fillers of magnesium oxide and tianium dioxide to wax, they made an improvement for mix D compared with wax alone in terms of mechanical properties and the attenuation ...
T, Hiraoka, K, Kawashima
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