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Geological and geostatistical modeling of indoor radon concentration in buildings of İzmir Province (Western Turkey).
J Environ Radioact
December 2024
Vocational School of Health Services, İzmir University of Economics, İzmir, Turkey; Department of Medical Physics, Institute of Health Sciences, Dokuz Eylül University, Izmir, Turkey.
Radon is a carcinogenic gas that cannot be detected by the five senses and poses a significant health threat, particularly in the form of lung cancer, to individuals living in all enclosed buildings worldwide. The aims of this study are to (1) measure Indoor Radon Concentrations (IRCs) in 117 buildings in İzmir, Turkey, (2) investigate and model the relationship between the IRCs and Geological Units (GUs) and Active Faults (AFs), and (3) compare the IRC values with the European Indoor Radon Reference Level (EIRRL) (200 Bq/m³) to identify areas that pose a potential health risk for lung cancer due to elevated Indoor Radon Levels (IRLs). The IRCs were measured using Solid State Nuclear Track Detectors (SSNTDs) in 117 buildings.
View Article and Find Full Text PDFDosimetric evaluation and gradient analysis of various MLC leaf-width effects in external beam radiation therapy: TrueBeam Vs Halcyon.
Radiography (Lond)
October 2024
Department of Radiation Oncology, Balco Medical Centre, New Raipur, Chhattisgarh, India.
Introduction: This study investigates dosimetric influence and gradient-analysis of leaf-width of various Multi-leaf-collimators (MLC) from Truebeam and Halcyon linear accelerators.
Methods: The leaf-width effects of Millennium120 and HD120MLC from Truebeam and SX1 and SX2 from Halcyon were studied using virtual phantom in Eclipse16.1.
Characterization and commissioning of a new collaborative multi-modality radiotherapy platform.
Phys Eng Sci Med
September 2023
Department of Radiation Oncology, Xijing Hospital, Fourth Military Medical University, 710032, Xi'an, Shaanxi Province, P.R. China.
TaiChi, a new multi-modality radiotherapy platform that integrates a linear accelerator, a focusing gamma system, and a kV imaging system within an enclosed O-ring gantry, was introduced into clinical application. This work aims to assess the technological characteristics and commissioning results of the TaiChi platform. The acceptance testing and commissioning were performed following the manufacturer's customer acceptance tests (CAT) and several AAPM Task Group (TG) reports/guidelines.
View Article and Find Full Text PDFAssessment of cross-dose contributions from tumors within computational phantoms using a Geant4 radiation dosimetry tool exploiting hybrid analytical/voxelised geometries.
Med Phys
October 2023
Centre for Medical Radiation Physics and School of Physics, University of Wollongong, Wollongong, Australia.
Background: Dosimetry software tools developed for Radiopharmaceutical Therapy, such as OLINDA/EXM or IDAC-Dose, account only for radiation dose to organs from radiopharmaceutical taken up in other organs.
Purpose: The aim of this study is to present a methodology, that can be applied to any voxelised computational model, able to account for cross-dose to organs from tumors of any shape and number enclosed within an organ.
Methods: A Geant4 application using hybrid analytical/voxelised geometries has been developed as an extension to the ICRP110_HumanPhantom Geant4 advanced example and validated against ICRP publication 133.
In-depth study of radon in water in a Greek village with enhanced radon concentrations.
J Environ Radioact
August 2023
Department of Electrical and Computer Engineering, Aristotle University of Thessaloniki, Thessaloniki, Greece. Electronic address:
This study focused on the radon transfer from the water to the air and the subsequent impact of waterborne radon indoors, taking advantage of the enhanced and decreasing from year to year radon-in-water concentrations observed in the Arnea village in Northern Greece. Some other essential aspects and observations regarding radon-in-water were also discussed. Concerning radon transfer from water to the air, the transfer efficiencies for showering and the use of the bathroom tap were estimated by measuring the radon-in-water and the waterborne radon-in-air concentrations in sealed bathrooms of two apartments in Arnea.
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