Radiation Physics and Chemistry最新文献

{"title":"Fabrication of low-cost heterogeneous anthropomorphic thyroid neck phantom for CT","authors":"Obaidullah Ehtesham Akbar ,&nbsp;Kamran Hameed ,&nbsp;Hussain Jaffar ,&nbsp;Mauth Yousef ,&nbsp;Maryam Al Hashim","doi":"10.1016/j.radphyschem.2025.112752","DOIUrl":"10.1016/j.radphyschem.2025.112752","url":null,"abstract":"<div><div>This article details the creation of a low-cost, heterogeneous anthropomorphic neck phantom with thyroid carcinoma for CT imaging. The phantom was designed to enable academic researchers and imaging system manufacturers to test and calibrate imaging machines and calculate dosimetry using thermoluminescent dosimeters in the neck and thyroid region. It was constructed using tissue-mimicking materials representing the thyroid, carcinoma, trachea, esophagus, spinal bones, muscle tissue, and adipose tissue. These materials were developed based on the elemental compositions outlined in the International Commission on Radiation Units and Measurements (ICRU) Report 44 and the International Commission on Radiological Protection Report 110 (ICRP).</div><div>The phantom was modeled and segmented from a CT scan of a 52-year-old female thyroid cancer patient using segmentation software. Segmented parts were 3D printed and molded with silicone caulking, followed by the fabrication of tissue-mimicking materials cast into a cylinder filled with muscle tissue material. Validation showed that the tissue-mimicking materials generally achieved appropriate ionizing radiation parameters, such as tissue density, electron density, and effective atomic number. However, notable discrepancies were observed in the densities of the muscle and spinal bone materials compared to reference values.</div><div>Mass attenuation coefficient (μ/ρ) graphs generated via the XCOM database showed minimal deviations from reference data provided by the ICRU and the ICRP. Validation under a standard thyroid imaging protocol on a CT machine demonstrated reasonable anatomical accuracy and Hounsfield unit ratios between tissues. However, challenges in achieving consistent material properties for muscle and spinal bone materials were identified, suggesting areas for future improvement.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"234 ","pages":"Article 112752"},"PeriodicalIF":2.8,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143791879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced ionizing radiation shielding using zinc oxide nanorods thin film doped with bismuth nitrate and polyethylene oxide","authors":"Mohamed Abdulsattar Al-Balushi, S.F. Abdul Sani, Hairul Anuar Tajuddin, A. Taheri, Jeannie Hsiu Ding Wong, Naser M. Ahmed, Shameer Hisham","doi":"10.1016/j.radphyschem.2025.112766","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2025.112766","url":null,"abstract":"The increasing demand for lightweight, eco-friendly, and non-toxic radiation shielding materials has driven significant research into alternatives to conventional shielding solutions. This study focuses on the development of zinc oxide nanorods thin films (ZnONRs-TFs) as a potential candidate for X-ray radiation protection. The films, synthesized via the chemical bath deposition (CBD) technique, were designed in single-layer and double-layer configurations combined with bismuth nitrate (BN) and PEO polymer. Their shielding properties were evaluated through both experimental measurements and Monte Carlo simulations across an X-ray photon energy range of 60–120 kVp. The results revealed that at lower energy levels (60–80 kVp), ZnONRs-TFs doped with 1g of BN exhibited superior shielding performance, attributed to the high atomic number (Z = 83), which enhances photon absorption. In addition, thinner films demonstrated higher linear attenuation coefficients (μ) due to improved packing density, filling interstitial spaces and voids within the nanostructure. At higher energy levels (90–120 kVp), a notable reduction in shielding performance was observed for all samples, driven by increased photon penetration and the prevalence of Compton scattering. Monte Carlo simulations showed strong agreement with experimental results at higher kVp levels (less than 2 % deviation), while discrepancies (∼20 %) at lower energies were attributed to experimental uncertainties, including X-ray tube calibration and secondary photon contributions. The ZnONRs-TFs doped with 1g of BN configuration enhanced shielding across all energy ranges, highlighting its potential as a sustainable and lightweight alternative for ionizing radiation protection. This study contributes to advancing thinner, environmentally friendly radiation shielding materials through nanotechnology.","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"128 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143820253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of radiation hazards linked to lo-salt consumption in Kurdistan Region-Iraq","authors":"Halmat J. Hassan","doi":"10.1016/j.radphyschem.2025.112767","DOIUrl":"10.1016/j.radphyschem.2025.112767","url":null,"abstract":"<div><div>The current study involves 35 salt samples, including naturally occurring radioactive material (NORM) and its potential impact on public health. In Kurdistan-Iraq, retail outlets offer samples of both local and imported products. Samples consist of iodized salt, Himalayan pink salt (pink rock salt), lo-salt (less sodium salt), and sea salt. Assessment is conducted about the radiological risk associated with salt consumption, emphasizing internal exposure dose. The XRF spectrometer and gamma spectroscopy analysis (HPGe) are in use. For the radionuclides ²²⁶Ra and ²³²Th, the salt sample ranged from 0.4 ± 0.1 to 14.2 ± 2.3 and 0.9 ± 0.1 to 36.1 ± 1.4 Bq kg⁻¹, respectively. The maximum activity level of ⁴⁰K was discovered to be 45936 ± 8223 Bq kg⁻¹ in the salt sample labeled S9, which was originally from the UK and included less sodium. Nevertheless, the sample, iodized white table salt, coded S35 (from Turkey), recorded the lowest values at 65.6 ± 4.8 Bq kg⁻¹. It was noted that the NORM content range varied significantly among the salt samples. In contrast, the average radioactivity concentration ranges in salt samples exceeded the average range of the permissible values in the world by UNSCEAR for ²³²Th and ⁴⁰K, at 45 and 412 Bq kg⁻¹, respectively. The annual effective dose of 767 and 549 μSv <span><math><mrow><msup><mi>y</mi><mrow><mo>−</mo><mn>1</mn></mrow></msup></mrow></math></span> would be the result of consuming the lo salt samples S9 and S10, respectively, assuming a daily salt intake of 6.4 g for adults. This exceeds the recommended level of effective 290 μSv <span><math><mrow><msup><mi>y</mi><mrow><mo>−</mo><mn>1</mn></mrow></msup></mrow></math></span>, which is equivalent to (1 mSv <span><math><mrow><msup><mi>y</mi><mrow><mo>−</mo><mn>1</mn></mrow></msup></mrow></math></span>) for members of the general public. Samples of lo-salt less sodium (S9) and Himalayan pink salt (S12) were found to contain lead levels of 21.6 and 20.4 PPM (mg kg⁻¹), respectively, which exceeded the national maximum contamination standard established by Food Standards Contamination and Codex. The daily salt consumption for people is assumed to be 6.4 g d⁻¹. Potential risks of radiation exposure should be addressed in food legislation to mitigate the risk to public health.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"234 ","pages":"Article 112767"},"PeriodicalIF":2.8,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Scanning protocol influence on relative electron Density-CT number calibrations and radiotherapy dose calculation for a Halcyon Linac","authors":"Duong Thanh Tai, Pham Nhu Tuyen, Hoang Duc Tuan, Hoang T.P. Hung, Recep Kandemir, Hiba Omer, Abdelmoneim Sulieman, David Bradley, James C.L. Chow","doi":"10.1016/j.radphyschem.2025.112760","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2025.112760","url":null,"abstract":"Tissue Relative Electron Density (RED), typically determined via computation of CT-based Hounsfield unit (HU) values, has an accuracy which is affected by the choice of CT scanning parameters. The influence of these on the RED-CT number calibration curves is of importance, not least concerning variations in CT x-ray tube voltage and current. The purpose of this study was to examine the effect of variations in CT x-ray tube voltage and current on the calibration curves of RED - CT number conversion, with the aim of improving the accuracy of dose calculation in radiotherapy treatment planning. An electron density phantom CIRS have been conducted at 200 mAs, for tube voltages of 80, 110, and 130 kVp, corresponding images being calibrated in terms of RED-CT number conversion curves. Subsequent treatment plans have been generated, identified in terms of the applied tube voltages, the 130 kVp plan being designated the reference plan. The remaining plans have been compared to the reference plan via analysis of isodose distribution and dose. The influence of tube voltage were being found to be greatest for high-density substances such as bone in comparison to low-density materials. Conversely, the CT number of a titanium rod has been consistent, regardless of the choice of tube voltage or current. The effect of tube current variation on the calibration curves has been minor at higher tube voltages but more pronounced using lower voltages and current. The presence in the phantom of plugs of high-density materials has resulted in beam hardening artefacts, impacting on the RED values for other plugs. In achieving accurate dose calculation for radiotherapy treatment plans the work underscores the need to account for effects of CT scanning parameters on the RED-CT number conversion curves. Further emphasized is the importance of careful selection of imaging protocols in seeking to minimize beam hardening artefacts and to ensure accurate determination of RED. The study demonstrates that the accuracy of RED-CT number conversion curves is substantially affected by the presence of high-density materials in the phantom, which causes beam hardening artefacts that affect the precision of RED values for other plugs.","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"20 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143820254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced photocatalytic ability of CuO/Ni-doped TiO2 nanocomposite under visible light: Theory and experiment","authors":"Atipong Bootchanont ,&nbsp;Sorravich Samerchue ,&nbsp;Chanapong Sipae ,&nbsp;Huali Zhao ,&nbsp;Russameeruk Noonuruk ,&nbsp;Porramain Porjai ,&nbsp;Wutthikrai Busayaporn ,&nbsp;Tirapat Wechprasit ,&nbsp;Thanaphon Kansaard ,&nbsp;Wisanu Pecharapa ,&nbsp;Voranuch Thongpool ,&nbsp;Chakkaphan Wattanawikkam ,&nbsp;Wutthigrai Sailuam","doi":"10.1016/j.radphyschem.2025.112761","DOIUrl":"10.1016/j.radphyschem.2025.112761","url":null,"abstract":"<div><div>CuO/Ni-doped TiO₂ composite photocatalysts were synthesized using a co-precipitation method as the composite of Ni-doped TiO₂ (Ni–TiO₂) with 0.5, 1.0, and 1.5 mol% of CuO. Composites with different CuO/Ni–TiO₂ ratios were studied to assess the influence of Ni and CuO on the crystal and local structure by X-ray diffraction (XRD) and X-ray absorption (XAS). The energy bandgap is investigated by UV–visible spectroscopy and is described by computational calculations using density functional theory (DFT). The correlation between the local site of Ni and the band structure will be analyzed and discussed by comparing the experiment and First-principle calculations. The photocatalytic activity of the CuO/Ni–TiO₂ systems is due to the absorption of radiation in the visible light region. The results indicated that 1.5 mol% of CuO contributes to the Ni–TiO₂ nanoparticles showing highest photocatalytic activity with rate constant of 0.03477 min⁻¹ in the degradation of Rhodamine B, which could be attributed to the low recombination rate of the electron-hole pair, and decrease of the bandgap, increase in the concentration of •OH radicals in the solution, which is beneficial for improving the photo degradation rate of organic compounds.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"234 ","pages":"Article 112761"},"PeriodicalIF":2.8,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study and considerations on the determination of attenuation curves in concrete for radiotherapy beams","authors":"J.O. Páez,&nbsp;W. Rodriguez,&nbsp;D. Cano","doi":"10.1016/j.radphyschem.2025.112707","DOIUrl":"10.1016/j.radphyschem.2025.112707","url":null,"abstract":"<div><div>This study addresses the reliance on outdated Tenth Value Layer (TVL) data for radiotherapy beams in concrete, which results in inconsistencies in reported values. Attenuation curves were determined for various radiotherapy accelerator spectra below 10 MV in concrete. The aim is to provide more accurate data with approximately 1% statistical uncertainty, thereby correcting the reliance on outdated TVL data and establishing a more accurate framework for future research.</div><div>Numerical simulations were carried out using Geant4, which also allowed for the evaluation of statistical uncertainties. A divergent isotropic point source beam of X-rays, matching radiotherapy accelerator spectra, was directed toward concrete barriers of varying thicknesses. An ICRU-tissue equivalent detector, simulating the thorax of the MIRD Phantom, was positioned to measure the transmitted dose. The findings indicate that some results aligned with current TVL values, thereby validating the methodology. Nevertheless, many new data points revealed significant differences in shielding thickness requirements based on accelerator spectra and concrete density, along with minor differences attributable to concrete compositions. Discrepancies in shielding thickness from established standards like IAEA SRS47 and NCRP 151 were unraveled by introducing new data alongside the parameters used to determine them.</div><div>This research highlights the need for refined data in radiotherapy accelerator shielding calculations. By presenting new insights, it advocates for improving current practices and emphasizes the importance of reporting accelerator spectra and associated uncertainties. This study contributes by helping users understand which variables are relevant for reporting new data and which are less critical.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"234 ","pages":"Article 112707"},"PeriodicalIF":2.8,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143724908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inherent role of density on the gamma ray attenuation characteristics of red mud based shield","authors":"Rahul Arya ,&nbsp;Rini Paulose ,&nbsp;Abhijit Bijanu ,&nbsp;Varsha Agrawal ,&nbsp;Rahitashya Shil ,&nbsp;Deepti Mishra ,&nbsp;Kaushik Banerjee ,&nbsp;Sujoy Chatterjee ,&nbsp;Sarmishtha Bhattacharyya ,&nbsp;Abhay Bhisikar ,&nbsp;Paparao Mondi ,&nbsp;Upendra Singh ,&nbsp;Jyoti Pendam ,&nbsp;Shabi Thankaraj Salammal","doi":"10.1016/j.radphyschem.2025.112757","DOIUrl":"10.1016/j.radphyschem.2025.112757","url":null,"abstract":"<div><div>High-energy radiation shielding materials are vital for protecting against radiation hazards. Both the atomic number and density of the shield plays a prominent role in attenuating high-energy photons. This study reports the inherent role of density on the gamma ray attenuation characteristics of the shields. The radiation shields with various densities between 2.12 to 5.23 g/cm³ were fabricated by varying their porosity through hot compaction rather than altering their compositions or materials as reported in literatures. Red mud (100 %) (Alumina industry waste) (RM) and red mud:Bi₂O₃ (50:50 wt%) mixtures (RMBi) were used to fabricate the shields. For example, the RMBi samples with density varying between 2.63 to 5.23 g/cm³ were prepared by applying 0–39.02 MPa pressure at 1000 °C. Eventually, the porosity of RMBi sample has decreased from 50 % to 2 % while increasing the pressure. The compressive strength of RMBi samples are 6.8, 101.8, 243.2 and 283.3 MPa. The gamma ray attenuation characteristics of the shields were studied using ²²Na source (0.511 and 1.274 MeV) in a narrow beam geometry. The linear attenuation coefficient (μ) of RMBi sample was found to increase from 0.0176 to 0.0272 mm^-1 while increasing the density from 2.63 to 5.23 g/cm³. The attenuation characteristics such as μ, half value layer and mean free path are well in agreement with the theoretical values obtained through Phy-X/PSD software except the effective atomic number (Z_eff). The Compton backscattering experiment was performed using ¹³⁷Cs point source (0.662 MeV) to determine Z_eff. The Z_eff of RMBi sample was noticed to increase from 20.99 to 40.92 while increasing the density of the shield whereas the Z_eff stays constant (19.90) when calculated using Phy-X/PSD software.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"234 ","pages":"Article 112757"},"PeriodicalIF":2.8,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On the sensitivity normalization for blue stimulated luminescence of quartz","authors":"Malika Singhal ,&nbsp;Madhusmita Panda ,&nbsp;O. Annalakshmi ,&nbsp;Naveen Chauhan","doi":"10.1016/j.radphyschem.2025.112764","DOIUrl":"10.1016/j.radphyschem.2025.112764","url":null,"abstract":"<div><div>In the single aliquot regeneration (SAR) dating method for quartz, the maximum dating limit depends on the saturation dose of sensitivity-corrected luminescence signal (L/T) and is generally found to be around ∼250 Gy. Since saturation is the restraining aspect in luminescence dating, it is important to understand the factors that influence it. This paper, investigates the blue stimulated luminescence (BSL) signals of quartz of different provenance using the multiple aliquot additive dose (MAAD) methodology. Results show that the BSL signal increases beyond the saturation limits of SAR. The early saturation in the SAR is observed primarily due to a disproportional increase in the test dose signal (T) at higher doses resulting from its dependence on the prior regeneration dose. The work further searches for normalization methods, which are independent of regeneration doses at high doses. Results show that zero glow thermo-luminescence (TL), BSL (after annealing, UV emission) and TL (after annealing, blue emission) normalization carry negligible previous dose information. These normalization signals are tested for constructing dose-response curve (DRC) using MAAD and multiple aliquot regeneration (MAR) methods. Laboratory generated DRCs are found to be best fitted with double saturating exponential with a second exponential saturation dose of 5800 ± 800 Gy. However, the scatter in the BSL, multiple aliquot data at higher doses (∼kGy) is significant and needs future investigation. The proposed methodology yields higher equivalent doses for the natural samples than SAR but still found to be lower than expected doses.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"234 ","pages":"Article 112764"},"PeriodicalIF":2.8,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reversible polymeric resin cured by ionizing radiation for consolidation of wooden artifacts of cultural heritage","authors":"Maria José Alves de Oliveira,&nbsp;Mariana Araujo,&nbsp;Larissa Otubo,&nbsp;Sonia Mello-Castanho,&nbsp;Pablo Vasquez","doi":"10.1016/j.radphyschem.2025.112765","DOIUrl":"10.1016/j.radphyschem.2025.112765","url":null,"abstract":"<div><div>This study investigated the application of Paraloid B72 resin, modified with methyl methacrylate (MMA) and butyl methacrylate (MaBu) monomers, to develop new materials for the consolidation and restoration of wooden objects. The curing process was conducted using ionizing radiation from a gamma source (cobalt-60), eliminating the need for organic solvents. After characterization by gel fraction analysis, the Paraloid 30 % formulation with MMA 40 % and MaBu 30 % was selected for further characterizations, including Thermogravimetric Analysis (TGA), Differential Scanning Calorimetry (DSC), Fourier Transform Infrared Spectroscopy (FTIR), and impregnation tests. The formulation was impregnated into wooden artifacts, cured using ionizing radiation, and subsequently characterized by FTIR, Scanning Electron Microscopy (SEM), and Computed Tomography (CT). The results showed that ionizing radiation replaces the need for catalysts, increasing the thermal stability of the resin and allowing cure control through dose (in kGy) and dose rate (kGy/h). This enabled the resin impregnation without compromising the integrity or the information contained in the consolidated artifact. The development of the methodology and resin formulation presented scientific challenges, particularly in ensuring that the desirable characteristics and reversibility were maintained.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"234 ","pages":"Article 112765"},"PeriodicalIF":2.8,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of radiation protection practices in dental clinics in Jeddah, Kingdom of Saudi Arabia","authors":"Shyma M. Alkhateeb, Majdi R. Alnowami, Bandar K. Althobiti, Ibrahim I. Ibrahim, Abdullah F. Aljehani, Salman A. Abuzaid, Ahmad Albngali, Adnan A. Alahmadi, Fatma Badr","doi":"10.1016/j.radphyschem.2025.112759","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2025.112759","url":null,"abstract":"Radiation use has increased, including increased demand for dental rays where radiosensitive organs (thyroid gland and eyes) are often exposed. Therefore, dental clinic workers' awareness and practices of radiation therapy require assessment. We therefore assessed the awareness of radiation protection protocols among dental clinic workers in Jeddah. Questionnaires were completed during visits to different dental institutions and clinics, including educational institutions and private and general medical centres. The questionnaire assessed dental workers' perceptions of radiation exposure and the risks associated with dental radiography. Differences between categorical data were analysed using the chi-squared test or Fisher's exact test, as appropriate. Of 300 participants who completed the questionnaires, (most in their 20s [132, 44 %]; 30s [107, 36 %]) were general dentists, followed by dental assistants, radiographers, and endodontists. There were 133, 106, 38, 10, and 4 participants working at private institutes, university hospitals, regional general hospitals (&gt;300 beds), general sector (&lt;300 beds), and other hospital types, respectively. Overall, 55, 97, 66, 39, 18, and 25 participants had &lt;1, 1–5, 6–10, 10–15, 16–20, and &gt;20 years of experience, respectively. More than half of dental clinic workers were highly knowledgeable about radiation protection, aware of its significance for both patients and staff. However, general hospital dental practitioners had the least radiation protection practices; therefore, general hospice radiation protection awareness is recommended.","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"23 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143744803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}