Results 11 to 20 of about 791,939 (337)

Effective atomic numbers and electron density of dosimetric material

open access: yesJournal of Medical Physics, 2009
A novel method for determination of mass attenuation coefficient of x-rays employing NaI (Tl) detector system and radioactive sources is described.in this paper.
Kaginelli S   +4 more
doaj   +3 more sources

Effective atomic number of some rare earth compounds determined by the study of external bremsstrahlung

open access: goldJournal of Radiation Research and Applied Sciences, 2015
In this paper we report the effective atomic number (Zeff) of some rare earth compounds determined from the measured external bremsstrahlung (EB) intensity due to the incident beta particles emitted by the 90Sr-90Y source. For this purpose the two sample
M.V. Manjunatha, T.K. Umesh
doaj   +2 more sources

Electron Density and Effective Atomic Number of Normal-Appearing Adult Brain Tissues: Age-Related Changes and Correlation with Myelin Content. [PDF]

open access: goldTomography
Hasegawa T   +13 more
europepmc   +3 more sources

Electron Density and Effective Atomic Number as Quantitative Biomarkers for Differentiating Malignant Brain Tumors: An Exploratory Study with Machine Learning. [PDF]

open access: goldTomography
Nakano T   +20 more
europepmc   +3 more sources

Investigation of radiological properties of imaging agents used in nuclear medicine with different methods and GATE/Geant4 simulation program [PDF]

open access: yesNuclear Technology and Radiation Protection, 2023
This study aims to determine the radiological properties of various radiopharmaceuticals used in nuclear medicine. In the study, mass attenuation coefficient values in different energy ranges were obtained for six different radiopharmaceuticals ...
Sahmaran Turan, Tugrul Taylan
doaj   +1 more source

Effect of dysprosium on the radiation-shielding features of SiO2–PbO–B2O3 glasses

open access: yesOpen Physics, 2023
In a variety of applications using ionizing radiation, it is essential to ensure the safety of both individuals and equipment. To this end, excellent radiation shielding materials, including glasses and rare earth elements, such as Dy2O3, are currently ...
Almuqrin Aljawhara H.   +1 more
doaj   +1 more source

Validation of computed tomography-based attenuation correction of deviation between theoretical and actual values for four computed tomography scanners [PDF]

open access: yesAsia Oceania Journal of Nuclear Medicine and Biology, 2016
Objective: In this study, we aimed to validate the accuracy of computed tomography-based attenuation correction (CTAC) using the bilinear scaling method.Methods: The measured attenuation coefficient (μm) was compared to a theoretical attenuation ...
Nobuhiro Yada, Hideo Onishi
doaj   +1 more source

Synthesized effective atomic numbers for commercially available dual-energy CT [PDF]

open access: yesReports of Practical Oncology & Radiotherapy, 2020
The objective of this study was to assess synthesized effective atomic number (Zeff) values with a new developed tissue characteristic phantom and contrast material of varying iodine concentrations using single-source fast kilovoltage switching dual-energy CT (DECT) scanner.A newly developed multi energy tissue characterisation CT phantom and an ...
Kawahara, Daisuke   +6 more
openaire   +4 more sources

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