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Assessment of radioactivity in soil samples from Wolaita Sodo town, Ethiopia: implications for environmental and public health.
Radiat Prot Dosimetry
January 2025
Department of Mechanical & Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada.
This study assesses the activity concentrations of the radionuclides 238U, 232Th, and 40K in soil samples collected from Wolaita Sodo town, located in the Southern Nations, Nationalities, and Peoples' (SNNP) Region, Ethiopia. A gamma-ray spectrometer equipped with a NaI(Tl) detector was used for the measurements. The concentrations of 238U, 232Th, and 40K varied from 3.
View Article and Find Full Text PDFDevelopment of a practical conversion factor for evaluating radioactivity in mixed metal and plastic clearance objects.
Appl Radiat Isot
March 2025
Tokyo City University, 1-28-1, Tamazutsumi, Setagaya-ku, Tokyo, 158-8557, Japan.
In clearance measurements involving a single material type, a conversion factor was applied to convert measurement results to activity based on an assumed uniform density. However, this factor has been found to underestimate activity in material mixtures. In this study, we proposed a method to identify the location with the lowest detection sensitivity (minimum location) in a mixture and evaluated its applicability to the conversion factor.
View Article and Find Full Text PDFInvestigations on the Performance of a 5 mm CdTe Timepix3 Detector for Compton Imaging Applications.
Sensors (Basel)
December 2024
Freiburg Materials Research Center, Albert-Ludwigs-Universität Freiburg, 79104 Freiburg im Breisgau, Germany.
Nuclear power plant decommissioning requires the rapid and accurate classification of radioactive waste in narrow spaces and under time constraints. Photon-counting detector technology offers an effective solution for the quick classification and detection of radioactive hotspots in a decommissioning environment. This paper characterizes a 5 mm CdTe Timepix3 detector and evaluates its feasibility as a single-layer Compton camera.
View Article and Find Full Text PDFDosimetric verification of point doses for I-125 implants designed by different manufacturers in prostate brachytherapy.
Rep Pract Oncol Radiother
December 2024
Department of Biomedical Physics, Faculty of Physics, Adam Mickiewicz University, Poznań, Poland.
Background: The purpose of this study is to determine the effect of the type of I-125 radioactive source on dose distribution in the planning process of ultra-low dose rate (uLDR) prostate brachytherapy.
Material And Methods: 7 patients who had undergone brachytherapy in our center were included in the study. Dose in five geometrical points were analyzed for 12 types of implants that are available on the market.
Integrated environmental and health assessment from hydrogeochemistry and radiogeology parameters of hydrothermal spring attractions in Southern Thailand.
Environ Geochem Health
January 2025
Nuclear Technology Research and Development Center, Thailand Institute of Nuclear Technology, Nakhon Nayok, 26120, Thailand.
The present study aimed to investigate the hydrogeochemical patterns and contamination of the radiogeology, especially radon activity, related to geothermal aquifer properties and to perform a risk assessment of annual effective doses covering all hydrothermal spring attractions in Southern Thailand. Radon is an established lung carcinogen; especially longer term exposure to radioactive radon through inhalation could be a cause of lung cancer risk. Altogether 22 hydrothermal spring samples were collected from the six hydrothermal provinces in Southern Thailand in early November of 2023.
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