Journal of Radiation Research and Applied Sciences最新文献

{"title":"Impact of case management on chemotherapy adherence, complications, and quality of life post-bladder tumor resection","authors":"Qiumei Huang,&nbsp;Yudui Xia,&nbsp;Jingfen Cui,&nbsp;Xinli Wang","doi":"10.1016/j.jrras.2026.102178","DOIUrl":"10.1016/j.jrras.2026.102178","url":null,"abstract":"<div><h3>Purpose</h3><div>Successful management of non-muscle-invasive bladder cancer (NMIBC) following transurethral resection of bladder tumor (TURBT) depends critically on compliance with intravesical chemotherapy. This study evaluates the impact of a case management model on patient adherence and prognosis.</div></div><div><h3>Methods</h3><div>This retrospective cohort analysis enrolled NMIBC patients who underwent intravesical chemotherapy after TURBT from June 2022 to June 2024. Subjects were allocated to either a case management cohort (n = 47) or a conventional care cohort (n = 43). Evaluations conducted at 6 and 12 months post-intervention encompassed adherence to therapy, scores from the Functional Assessment of Cancer Therapy – Bladder (FACT-BL), incidence of complications, rates of bladder tumor recurrence, results from the Self-Rating Anxiety Scale (SAS) and Self-Rating Depression Scale (SDS), as well as outcomes from the European Organization for Research and Treatment of Cancer Quality of Life Questionnaires (EORTC QLQ-C30 and QLQ-BLS24).</div></div><div><h3>Results</h3><div>The case management group showed higher overall treatment adherence (100 % vs 83.72 %, p = 0.013), calculated for all 47 patients who completed the one-year study period with no dropouts or exclusions due to protocol deviation, and lower complication rates during instillation (21.28 % vs 46.51 %, p = 0.011). FACT-BL scores in all four domains were higher in the case management group (all p &lt; 0.05). SAS (41.77 vs 49.32, p &lt; 0.001) and SDS (44.66 vs 47.82, p = 0.001) scores were lower. QLQ-BLS24 indicated reduced future concerns and improved gastrointestinal symptoms, while QLQ-C30 showed better cognitive, emotional, and social functioning. No difference in bladder tumor recurrence rates was observed (p &gt; 0.05).</div></div><div><h3>Conclusion</h3><div>A structured case management model enhanced adherence, reduced complications, and improved quality of life for NMIBC patients receiving intravesical chemotherapy without negatively impacting short-term recurrence rates.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"19 1","pages":"Article 102178"},"PeriodicalIF":2.5,"publicationDate":"2026-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145976947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing low-dose CT liver imaging with self-attention RRDB-ESRGAN: A SR approach for improved diagnostic accuracy","authors":"Wail M. Idress ,&nbsp;Yuqian Zhao ,&nbsp;Osama Ziad Shahin ,&nbsp;Laeeq Aslam ,&nbsp;Muhammad Asim ,&nbsp;Mudasir Ahmad Wani ,&nbsp;Kashish Ara Shakil","doi":"10.1016/j.jrras.2025.102145","DOIUrl":"10.1016/j.jrras.2025.102145","url":null,"abstract":"<div><div>Computed tomography (CT) plays a critical role in diagnosing liver diseases by enabling detailed visualization of internal anatomical structures. However, to minimize radiation exposure, low-dose CT (LDCT) protocols are often adopted; these inevitably lead to increased image noise and reduced spatial resolution, which adversely affect diagnostic quality. To address these limitations, we propose a novel super-resolution (SR) framework based on an enhanced version of the Enhanced Super-Resolution Generative Adversarial Network (ESRGAN), specifically designed for LDCT liver imaging. Our method integrates Residual-in-Residual Dense Blocks (RRDBs) within the generator to effectively capture complex anatomical features and hierarchical textures. A self-attention module is incorporated to selectively emphasize diagnostically salient regions, facilitating more accurate restoration of critical structures. The discriminator network, trained using an adversarial learning strategy, guides the generator toward producing images with enhanced perceptual realism. We evaluate our Self-Attention Residual-in-Residual Dense Block ESRGAN (Self-Attention RRDB-ESRGAN) model using three publicly available datasets: the Liver Tumor Segmentation Challenge (LiTS17), 3DIRCADb, and the Medical Segmentation Decathlon (Task 03_Liver). Quantitative metrics, including peak signal-to-noise ratio (PSNR), structural similarity index measure (SSIM), and mean opinion score (MOS), demonstrate the superior performance of our model in restoring high-fidelity images from low-dose inputs. The Self-Attention RRDB-ESRGAN achieved an average PSNR of 41.579 dB and an SSIM of 0.9472, significantly outperforming existing methods, while experienced radiologists rated the perceptual quality with an average MOS of 4.05 out of 5. These findings highlight the effectiveness and clinical applicability of the proposed framework for enhancing LDCT liver images and improving diagnostic accuracy.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"19 1","pages":"Article 102145"},"PeriodicalIF":2.5,"publicationDate":"2026-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145976944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation value of ultrasonic shear wave elastic imaging, MRI combined with ADC value in liver fibrosis degree of nonalcoholic fatty liver","authors":"Yang Liu,&nbsp;Fei Teng,&nbsp;Yan Ding,&nbsp;Jian Zhou,&nbsp;Qibo Cai,&nbsp;Yang Shi,&nbsp;Qi Liu","doi":"10.1016/j.jrras.2025.102135","DOIUrl":"10.1016/j.jrras.2025.102135","url":null,"abstract":"<div><div>To investigate the value of ultrasonic shear wave elastography (SWE), magnetic resonance imaging (MRI) and apparent diffusion coefficient (ADC) in evaluating the degree of liver fibrosis in nonalcoholic fatty liver disease (NAFLD).</div><div>150 patients with NAFLD were selected as the observation group, another 150 healthy subjects were selected as the control group. According to METAVIR score, the degree of liver fibrosis was divided into F0 stage, F1 stage, F2 stage, F3 stage and F4 stage. SWE, MRI and ADC values were detected in all subjects. Spearman correlation coefficient was used to analyze the correlation between each parameter and the stage of liver fibrosis.</div><div>The results of liver puncture pathology were the gold standard. Young's modulus and MRI-PDFF (Proton density fat fraction) in observation group were higher than those in control group, ADC was lower than those in control group (<em>P</em> &lt; 0.05). Young's modulus and MRI-PDFF in F4 group were higher than those in F3, F2, F1 and F0 groups (<em>P</em> &lt; 0.05), and ADC in F4 group was lower than that in F3, F2, F1 and F0 groups (<em>P</em> &lt; 0.05), and the differences among all groups were statistically significant (<em>P</em> &lt; 0.05). Young's modulus and MRI-PDFF were positively correlated with the degree of NAFLD liver fibrosis, while ADC was negatively correlated (<em>r</em> = 0.662, 0.542, −0.571, <em>P</em> &lt; 0.05). The <em>AUC</em> value of Young's modulus, MRI-PDFF and ADC values in the evaluation of the degree of NAFLD liver fibrosis was higher than that of single detection (<em>Z</em> = 3.283, 3.276, 4.038, <em>P</em> &lt; 0.05). The calibration curve and receiver operating characteristic curve (<em>ROC</em>) showed that the model had better predictive value, and the plotted decision curve (DCA) also showed obvious positive net benefit.</div><div>The combined determination of SWE, MRI and ADC has higher value in evaluating the degree of liver fibrosis in NAFLD. The nomogram model established by this method has good predictive value.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"19 1","pages":"Article 102135"},"PeriodicalIF":2.5,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145976946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A survey on recent Progress on Monte Carlo simulation methods in radiation detection","authors":"Nadyah Alanazi ,&nbsp;Raghad Aljeraiwi ,&nbsp;Maram Almutairi ,&nbsp;Abdullah N. Alodhayb","doi":"10.1016/j.jrras.2025.102146","DOIUrl":"10.1016/j.jrras.2025.102146","url":null,"abstract":"<div><div>Monte Carlo Simulations are methods used to simulate physical systems and evaluate physical properties that are extremely difficult to execute in real life. It is used as a golden standard tool for modeling complex radiation interactions with materials and for modeling complex detectors geometries. Such simulation methods designed for different particles transports such as protons, neutrons, and gamma-rays. In this review, we will focus on recent literature on using Monte Carlo Simulation in detecting radiations, focusing on GEANT, MCNP, and EGS toolkits highlighting their unique capabilities in simulating various particles and geometries with high accuracy, as well as recent advancements in enhancing their performance including high-performance computing integration, variance reduction techniques, and hybrid modeling approaches that combine Monte Carlo simulations with deterministic or AI-based techniques. The review outlines recent Monte Carlo simulation applications such as medical physics, particle physics, and environmental monitoring, underlining the adaptability and future potentials of Monte Carlo simulation in advanced radiation detection systems.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"19 1","pages":"Article 102146"},"PeriodicalIF":2.5,"publicationDate":"2026-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145976941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"KLK5 promotes anoikis resistance in non-small cell lung cancer by activating PI3K/AKT signaling pathway","authors":"Lei Zhang ,&nbsp;Qingqing Sun ,&nbsp;Qingyong Cai ,&nbsp;Mingqiang Shen ,&nbsp;Zhijun Zhu ,&nbsp;Tengfang Zhang ,&nbsp;Baolei Liang ,&nbsp;Jinjiao Zhang","doi":"10.1016/j.jrras.2026.102162","DOIUrl":"10.1016/j.jrras.2026.102162","url":null,"abstract":"<div><h3>Background</h3><div>Metastasis and recurrence remain the principal causes of mortality in non-small cell lung cancer (NSCLC) patients. A critical prerequisite for tumor cell invasion and metastasis is the development of resistance to anoikis. In NSCLC, high levels of KLK5 are linked to lymphatic metastasis and unfavorable patient survival. This study was designed to investigate the role of KLK5 in anoikis and hypothesized that KLK5 promotes NSCLC metastasis by conferring anoikis resistance via the PI3K/AKT pathway.</div></div><div><h3>Methods</h3><div>We established and characterized an anoikis-resistant stable cell line, AR-H1299. KLK5 expression in these cells was measured using RT-qPCR and Western blot. Functional assessments of AR-H1299 cells, including CCK-8 assay, colony formation assay, flow cytometry, wound healing assay, and Transwell assay, were performed, and the levels of epithelial-mesenchymal transition (EMT) and metastasis signaling-related proteins were examined. The mechanism by which KLK5 confers anoikis resistance was further investigated through Western blot analysis and functional rescue experiments.</div></div><div><h3>Results</h3><div>Our results show that KLK5 expression is closely associated with anoikis resistance in NSCLC cells. Genetic knockdown of KLK5 inhibited, while its overexpression enhanced, the proliferation, migration, invasion, and EMT process of AR-H1299 cells. Mechanistic studies revealed that KLK5 promotes the expression of downstream apoptotic regulators Bcl-2 and Bad by activating the PI3K/AKT pathway. Rescue experiments confirmed that the PI3K/AKT inhibitor LY294002 could counteract the pro-metastatic effects induced by KLK5 upregulation.</div></div><div><h3>Conclusion</h3><div>This study elucidates a previously unreported mechanism by which KLK5 confers anoikis resistance through the PI3K/AKT signaling pathway to promote metastasis in NSCLC.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"19 1","pages":"Article 102162"},"PeriodicalIF":2.5,"publicationDate":"2026-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145976945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hybrid quantum-classical convolutional neural networks for multiclass lung X-ray image classification","authors":"Ariiq Islam Alfajri ,&nbsp;Tony Sumaryada ,&nbsp;Sitti Yani ,&nbsp;Duong Thanh Tai ,&nbsp;Nissren Tamam ,&nbsp;Abdelmoneim Sulieman","doi":"10.1016/j.jrras.2026.102165","DOIUrl":"10.1016/j.jrras.2026.102165","url":null,"abstract":"<div><h3>Purpose</h3><div>This study explores the integration of quantum computing with classical convolutional neural networks (CNNs) to improve the classification of lung X-ray images into three diagnostic categories: normal, lung opacity, and viral pneumonia.</div></div><div><h3>Methods</h3><div>A dataset of 3475 lung X-ray images was split into training (80 %) and validation (20 %) subsets. Hybrid models combining classical CNN layers with quantum convolutional layers were developed using various combinations of quantum gates, including Rotation-X/Y and Pauli-X/Y/Z. Data augmentation techniques were applied to mitigate overfitting. Model performance was evaluated using accuracy, precision, recall, and F1-score.</div></div><div><h3>Results</h3><div>The classical CNN model achieved the highest accuracy of 91 %. Among the quantum-enhanced models, the combination of Rotation-X and Pauli-Z gates produced the best results, reaching an accuracy of 87 %. While quantum integration introduced a slight decrease in accuracy, it demonstrated comparable performance across multiple gate configurations.</div></div><div><h3>Conclusion</h3><div>Hybrid quantum-classical CNNs show promise for medical image classification, with certain quantum gate combinations offering competitive performance. Further optimization of quantum parameters and multi-qubit interactions may enhance their future applicability in diagnostic imaging.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"19 1","pages":"Article 102165"},"PeriodicalIF":2.5,"publicationDate":"2026-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145976942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Hamilton-crosser thermal conductivity model in the quaternary nanofluid flow with second-order slip condition","authors":"Hazirah Mohd Azmi ,&nbsp;Norihan Md Arifin ,&nbsp;Haliza Rosali ,&nbsp;Siti Suzilliana Putri Mohamed Isa","doi":"10.1016/j.jrras.2025.102142","DOIUrl":"10.1016/j.jrras.2025.102142","url":null,"abstract":"<div><div>Nanofluids, formed by dispersing nanoparticles into conventional base fluids, have gained significant attention as advanced heat transfer media in various sectors, including automotive, aerospace, nuclear reactors, biomedical systems, etc. Their enhanced thermophysical properties and particularly improved thermal conductivity, which make them superior to traditional fluids for high-efficiency thermal management. To accurately estimate the thermal conductivity of nanofluids, several theoretical models have been proposed, among which the Hamilton-Crosser (HC) model is widely adopted. This model extends Maxwell's classical theory by incorporating particle shape factors, providing more accurate predictions for fluids containing non-spherical or clustered nanoparticles. In the field of fluid mechanics, boundary layer flows influenced by magnetohydrodynamics (MHD) and thermal radiation are of increasing relevance in systems subjected to magnetic fields and high heat loads, such as in magnetic cooling, plasma processing and solar energy applications. According to this problem statement, this paper provides a numerical solution for the mathematical modelling of the MHD radiative water-based nanofluid flow. This nanofluid contains a combination of four nanoparticles: alumina, copper, graphene and silicon dioxide, which represents a quaternary hybrid nanofluid system. The mathematical modelling was initiated with the partial differential equations (PDEs) and finalised by ordinary differential equations (ODEs). The transformations from PDEs to ODEs simplify the mathematical model for numerical analysis, which can be done by using similarity transformations. The resulting ODEs are solved using MATLAB's built-in bvp4c solver. Key physical quantities for the profiles (velocity and temperature) and the quantities measured for the flow and thermal characteristics (skin friction coefficient and local Nusselt number) are graphically illustrated and described. The results show that the quaternary case produces the highest heat transfer rate compared to the nanofluid case, which has the lowest number of nanoparticle types (nanofluid case). In addition, the cylindrical shape is proven to have the highest local Nusselt number value for the stretching boundary case, while the spherical shape produces the highest local Nusselt number value for the shrinking boundary. Meanwhile, the magnetic field, thermal radiation, slip condition and projected angle at the sheet influence the distribution of the profile and physical parameters.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"19 1","pages":"Article 102142"},"PeriodicalIF":2.5,"publicationDate":"2026-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145924603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"SIRT7-mediated desuccinylation of PRMT5 activates the ERK1/2-VEGF-C axis to promote lymphangiogenesis in gastric cancer","authors":"Hongpeng Zhao,&nbsp;Zhihua Liang,&nbsp;Feng Li,&nbsp;Haihua Yu,&nbsp;Kai Li,&nbsp;Bo Liu","doi":"10.1016/j.jrras.2025.102120","DOIUrl":"10.1016/j.jrras.2025.102120","url":null,"abstract":"<div><h3>Background</h3><div>Lymphangiogenesis plays a significant role in tumor metastasis, making it a critical target for cancer therapies. PRMT5, an oncogene involved in various cellular processes, and SIRT7, a desuccinylase, regulate this process in gastric cancer (GC) through complex signaling pathways. However, the specific role of PRMT5 in tumor-induced lymphangiogenesis remains largely unexplored. This study investigates the role of SIRT7 in modulating PRMT5 expression and its impact on lymphangiogenesis through the ERK1/2 signaling pathway in GC.</div></div><div><h3>Methods</h3><div>All functional assays were performed using human lymphatic endothelial cells (HLECs). HLECs were subjected to PRMT5 and SIRT7 knockdown or overexpression via lentiviral transfection. Cell proliferation was evaluated by CCK-8 assay, tube formation was assessed using Matrigel assays, and protein expression was detected by Western blotting. VEGF-C secretion was measured by ELISA, and Co-immunoprecipitation was performed to examine the interaction between SIRT7 and PRMT5. The ERK1/2 signaling pathway was analyzed to elucidate downstream mechanisms.</div></div><div><h3>Results</h3><div>PRMT5 knockdown inhibited lymphangiogenesis and reduced VEGF-C expression, while SIRT7 suppression increased PRMT5 levels, enhancing endothelial cell proliferation and tube formation. Western blotting showed that PRMT5 activates the ERK1/2 pathway, which is essential for VEGF-C regulation. Co-immunoprecipitation further confirmed a direct interaction between SIRT7 and PRMT5, supporting the regulatory link between these proteins.</div></div><div><h3>Conclusions</h3><div>We identify the SIRT7/PRMT5/ERK1/2/VEGF-C axis as a novel and key regulator of lymphangiogenesis in GC, with significant potential therapeutic implications.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"19 1","pages":"Article 102120"},"PeriodicalIF":2.5,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145924667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Process analysis for strengthening radiation safety practices in operating theatre","authors":"Sahal Alotaibi ,&nbsp;Sultan Alamri ,&nbsp;Ahmad Joman Alghamdi ,&nbsp;Nahla L. Faizo ,&nbsp;Hamid Osman ,&nbsp;Mohammad AlTalhi ,&nbsp;Hasan Althumali ,&nbsp;Mansour Almalki ,&nbsp;Hatem Alotaibi ,&nbsp;Mohammed Alghoraibi ,&nbsp;Thamer Aljuaid ,&nbsp;Dalia Alharthi ,&nbsp;Abdulelah Alasmari","doi":"10.1016/j.jrras.2026.102164","DOIUrl":"10.1016/j.jrras.2026.102164","url":null,"abstract":"<div><div>Radiation safety in operating theatres is critical due to the growing use of radiation-emitting equipment in surgical specialties. While individual knowledge and compliance have been widely studied, limited research has focused on the systemic processes influencing radiation protection implementation. This study aimed to analyze radiation safety processes across healthcare roles to identify factors that facilitate or hinder effective protection. A cross-sectional survey was conducted among 212 healthcare professionals (116 technologists, 57 nurses, 26 surgeons, and 13 anesthesiologists) working in operating theatres with radiation-emitting equipment. The survey assessed process effectiveness in seven areas: safety checks, responsibility clarity, equipment accessibility, dosimeter use, communication, learning from incidents, and interdepartmental coordination. Statistical analysis included descriptive statistics, Kruskal-Wallis tests, and content analysis. Ethical approval was obtained, and the sample size was justified based on statistical power considerations. Significant variations in process effectiveness were found across roles, especially in equipment accessibility (p = 0.0039) and communication (p = 0.0201). Anesthesiologists reported higher effectiveness scores, while surgeons reported lower scores. Only 25 % of participants reported \"always accessible\" radiation protection equipment, and 30.7 % cited insufficient training as a major barrier. Team communication was the top enabler (44.8 %), while time pressure (28.8 %) and lack of awareness (29.2 %) were key barriers. Radiation safety in operating theatres is a systems issue requiring a focus on organizational processes, not just individual compliance. Addressing systemic factors, such as equipment accessibility and communication, is crucial for improving radiation safety.</div></div><div><h3>Keyords</h3><div>Radiation protection, Operation theatres, Safety, Saudi Arabia.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"19 1","pages":"Article 102164"},"PeriodicalIF":2.5,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145924666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance assessment of commonly used active radiation protection dosimeters for individual and area workplace monitoring","authors":"Jelena Vlahović ,&nbsp;Nikola Kržanović ,&nbsp;Miloš Živanović ,&nbsp;Ivana Stojanović ,&nbsp;Luka Bakrač ,&nbsp;Argiro Boziari ,&nbsp;Miloš Đaletić ,&nbsp;Ana Fernandes ,&nbsp;Liviu-Cristian Mihailescu ,&nbsp;Erinc Reyhanoglu ,&nbsp;Siarhei Saroka ,&nbsp;Teemu Siiskonen ,&nbsp;Jana Šmoldasová ,&nbsp;Vladimir Sochor ,&nbsp;Maria do Ceu Ferreira ,&nbsp;Nataša Todorović","doi":"10.1016/j.jrras.2026.102159","DOIUrl":"10.1016/j.jrras.2026.102159","url":null,"abstract":"<div><h3>Background</h3><div>Improvement in radiation protection practice may be achieved by acquisition of reliable and accurate dosimetry data. Use of dosimeters with known properties provides insight into their performance in real radiation fields encountered in radiation monitoring practice.</div></div><div><h3>Aim</h3><div>Performance evaluation in a wide range of radiation conditions provides insight into dosimeter behaviour, providing input for revision, update and harmonization of IEC type testing standards.</div></div><div><h3>Methods</h3><div>A total of 32 active dosimeters were investigated, of which 26 are used for area workplace, and 6 for individual monitoring. Dosimeter performance was evaluated against the IEC 60846–1:2009 standard for portable workplace and environmental meters and monitors and the IEC 61526:2024 standard for active personal dosimeters in a wide range of photon energies, angles of incidence and dose equivalent rates. Performance was examined beyond the minimum rated range: 33.3 keV–1.25 MeV photon energy; (0°; ±75°) angle of incidence for personal dosimeters and (0°; ±120° with 180°) for area dosimeters; 3 μSv h⁻¹ – 7 Sv h⁻¹ dose rate range. In addition, dosimeter short-term stability and overload properties were investigated.</div></div><div><h3>Results</h3><div>State-of-the-art and commonly used dosimeters complied with the standard defined limits of variation with respect to the manufacturer stated specifications. Some dosimeters had significantly lower variations in terms of relative response than the current standard stated requirements.</div></div><div><h3>Conclusion</h3><div>Potential update of the relevant IEC type testing standards was considered, with the possibility of introducing two distinct dosimeter classes, one of which would comply with reduced limits of variation.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"19 1","pages":"Article 102159"},"PeriodicalIF":2.5,"publicationDate":"2026-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145924668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}