Journal of Radiation Research and Applied Sciences最新文献

{"title":"Shape features in magnetized hybrid nanofluid subject to thermal radiation, viscous dissipation and chemical effects: Insight to nanoparticles morphology","authors":"Rejab Hajlaoui ,&nbsp;Sami Ullah Khan ,&nbsp;Badr M. Alshammari ,&nbsp;Mohamed Mahdi Boudabous ,&nbsp;Mohamed Turki ,&nbsp;Chemseddine Maatki ,&nbsp;Mohammed Naceur Borjini ,&nbsp;Lioua Kolsi","doi":"10.1016/j.jrras.2025.101574","DOIUrl":"10.1016/j.jrras.2025.101574","url":null,"abstract":"<div><div>The hybrid nanomaterials are advanced working fluids that offer enhanced thermal impact due to combination of multiple nanoparticles. Owing to improved thermal features, the hybrid nanofluids are assumed to be ideal for enhancing the heat transfer phenomenon in various thermal systems, solar energy, cooling processes, heat exchangers and nuclear systems. Current study explores the thermal management of magnetized hybrid nanofluid with applications of non-classical Fourier approach. A uniform decomposition of titanium dioxide (TiO₂) and silicon dioxide (SiO₂) nanoparticles with human blood base fluid has been assumed. The improvement of heat transfer is further analyzed by contributing the nonlinear thermal radiation and viscous dissipation effects. The concentration of nanofluid with applications of chemical reaction features is accounted. The mathematical model is developed by following famous Tiwari and Das model. The flow is subject to porous stretched surface subject to realistic engineering, industrial and biomedical engineering. The dimensionless form of problem is retained with implication of scaling parameters. The resultant system is solved numerically via the shooting method coupled with the Runge-Kutta technique, ensuring high accuracy and computational efficiency. Physical insight of key parameters has been examined graphically. The results show that consideration of nonlinear thermal radiation as well as viscous dissipation substantially enhances the transport phenomenon. The change in chemical reaction parameter reduces the concentration phenomenon. Furthermore, the combined impact of magnetohydrodynamics (MHD) and surface permeability alter the flow dynamics, offering valuable insights for optimizing processes in advanced thermal management systems and petroleum engineering.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 3","pages":"Article 101574"},"PeriodicalIF":1.7,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143928574","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":"Altered brain functional connectivity in paroxysmal atrial fibrillation: Insights from resting-state fMRI","authors":"Dayang Huang,&nbsp;Dechun Yin,&nbsp;Xiufen Qu","doi":"10.1016/j.jrras.2025.101603","DOIUrl":"10.1016/j.jrras.2025.101603","url":null,"abstract":"<div><h3>Background</h3><div>Paroxysmal atrial fibrillation (PAF), an episodic form of irregular heart rhythm, is associated with changes in brain connectivity, particularly in regions involved in auto-nomic regulation. This study aimed to examine whole-brain functional connectivity (FC) in PAF patients compared to healthy controls (HCs) using resting-state functional MRI (rs-fMRI).</div></div><div><h3>Methods</h3><div>Twenty PAF patients and 19 age and gender matched HCs underwent rs-fMRI scans. The whole-brain voxel-wise FC analysis was conducted based on regions of interest defined by the Automated Anatomical Labeling 3 (AAL3) atlas. Seed regions showing significant group differences were refined into subregions to further define the altered function network.</div></div><div><h3>Results</h3><div>PAF patients exhibited altered FC in several brain regions, including the left posterior orbitofrontal cortex, the left hippocampus, multiple hypothalamic nuclei, left insula, left inferior frontal gyrus opercular part, left fusiform, right globus pallidus and left ventral tegmental area. Moreover, altered FC was observed in the left ventral anterior insula and the left anterior hippocampus with enhanced connectivity in limbic regions linked to autonomic dysregulation.</div></div><div><h3>Conclusions</h3><div>These findings reveal that PAF is associated with significant alterations in the neural networks that regulate emotional processing, sensory integration, and autonomic control.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 3","pages":"Article 101603"},"PeriodicalIF":1.7,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143928572","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":"Assessmentof saudi radiologist performance in reading screening mammography","authors":"Salman M. Albeshan ,&nbsp;Areej Alofi ,&nbsp;Sultan F. Alhujaili ,&nbsp;Abdulaziz S. Alshabibi ,&nbsp;Basel Qenam ,&nbsp;Meaad M. Almusined ,&nbsp;Abdulmajeed Alotabibi ,&nbsp;Nuha A. Khoumais","doi":"10.1016/j.jrras.2025.101568","DOIUrl":"10.1016/j.jrras.2025.101568","url":null,"abstract":"<div><h3>Aim</h3><div>To evaluate the diagnostic performance of Saudi radiologists in interpreting screening mammograms.</div></div><div><h3>Methods</h3><div>A total of 72 readers participated, including 33 Saudis and 39 non-Saudis. Participants interpreted 30 mammograms (15 normal and 15 abnormal) using the DetectedX online platform. For each participant, key performance metrics were collected, including sensitivity, specificity, and lesion sensitivity. In addition, lesion detection performance was assessed with the Jackknife Free-Response Receiver Operating Characteristics (JAFROC) Figure of Merit (FOM). The analysis explored the relationship between performance metrics and key reader characteristics.</div></div><div><h3>Results</h3><div>Non-Saudi radiologists demonstrated significantly higher JAFROC scores (median = 0.53 vs. 0.43, <em>p</em> = 0.043) and specificity (median = 0.80 vs. 0.55, <em>p</em> &lt; 0.001) compared to Saudi radiologists. However, Saudi radiologists showed higher sensitivity (median = 0.80 vs. 0.60, <em>p</em> = 0.024). In the JAFROC model, nationality was a significant predictor, with non-Saudis scoring higher than Saudis (R² = 10.2 %, <em>p</em> = 0.04), whereas in the sensitivity model, Saudis outperformed non-Saudis (R² = 7.4 %, <em>p</em> = 0.02). Lesion sensitivity was predicted by position (R² = 15.2 %), while the specificity model explained the highest variance (R² = 44.7 %) based on both position and nationality.</div></div><div><h3>Conclusion</h3><div>While Saudi radiologists showed strong abilities in detecting breast cancer, their lower specificity highlights the need for improving diagnostic accuracy to reduce false positives. To enhance overall diagnostic accuracy in breast cancer screening, it is essential to implement targeted professional development programs focusing on balancing sensitivity and specificity.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 3","pages":"Article 101568"},"PeriodicalIF":1.7,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922082","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 thermal transport for magnetized radiating flow of ternary nanomaterial: Thermodynamics second law analysis","authors":"Hassan Ali Ghazwani","doi":"10.1016/j.jrras.2025.101576","DOIUrl":"10.1016/j.jrras.2025.101576","url":null,"abstract":"<div><div>Nanomaterial flows have gained considerable attention of numerous engineers and scientists now a days. It is due to significant utilization in tremendous real-life applications like nuclear reactor cooling, microelectronics, crack-resistance paint, engine cooling, heat exchangers, thermal power plants, enhance-oil recovery, transparent sunscreen, thermal transport, architecture etc. In view of such important applications, entropy optimized magnetohydrodynamic radiative flow of nanomaterial is organized. Porous space is discussed by Darcy-Forchheimer relation. Ternary hybrid nanomaterial is the hybridization of three types of nanoparticles (TiO₂, SiO₂ and MoS₄) in base liquid (blood). Flow model is developed to discuss the thermal transport characteristics of ternary hybrid (TiO₂ +SiO₂ +MoS₄/blood), hybrid (TiO₂+SiO₂/blood) and (TiO₂/blood) nanomaterial. Thermal relation comprises Ohmic heating, dissipation, radiation and heat generation. Significance feature of entropy rate is addressed. Related equations of proposed model are reduced into non-dimensional expressions. Dimensionless expressions are numerically solved by utilizing ND-solve method. Comparative study for velocity, coefficient of skin friction, temperature, Nusselt number and entropy rate for three considered nanomaterials is presented. It is noted that velocity intensifies with higher curvature variable while it decays for larger magnetic field. An increasing trend of drag force is noted for higher magnetic field and curvature variable. Higher radiation variable results in temperature enhancement. Entropy rate enhances against magnetic field. An enhancement in Nusselt number is detected for higher magnetic parameter. Augmentation in heat transport rate occurs for radiation. It is observed that frictional force is higher for ternary hybrid nanofluid (TiO₂ +SiO₂ +MoS₄ blood) when compared with hybrid nanofluid (TiO₂ +SiO₂ blood) and nanofluid (TiO₂ blood). Here one can find that temperature and energy transport rate for ternary hybrid nanofluid (TiO₂ +SiO₂ +MoS₄/blood) is more dominant than hybrid nanofluid (TiO₂ +SiO₂/blood) and nanofluid (TiO₂/blood).</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 3","pages":"Article 101576"},"PeriodicalIF":1.7,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143928570","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":"Radioactivity concentrations in soil and dose assessments for the coastal area of the Red Sea in Sudan","authors":"Mohammed Mergani ,&nbsp;Yousif Abdallah ,&nbsp;Mohamed D. Ali ,&nbsp;Hiaty Mohammed ,&nbsp;Abdullah A. Althobity ,&nbsp;Abdullah O Alamoudi","doi":"10.1016/j.jrras.2025.101561","DOIUrl":"10.1016/j.jrras.2025.101561","url":null,"abstract":"<div><div>As part of a national project, the levels of natural radioactivity in sand samples from Sudan's Red Sea coastal region were investigated. Sediment samples were collected at different water depths along the shoreline using Van Veen and Peterson grab samplers. The study comprehensively assessed the radiation hazard posed by the total natural radioactivity using various methodologies, including Raeq values, absorbed dose rates, hazard indices, and annual effective dose equivalents. One of our study's key aspects was comparing our findings with internationally endorsed thresholds to allow us to analyze our results in the context of global standards. Radioactivity levels were measured using a NaI(Tl) detector (CANBERRA model 802), and the average concentrations of U-238, Th-232, and K-40 were found to be 10.06, 13.63, and 181.80 Bqkg-1, respectively. The measured absorbed dose rate, annual effective dose equivalent, and hazard index were 24.01 nGy/h, 0.029 μSv/y, and 0.172, respectively<strong>.</strong> The Excess Lifetime Cancer Risk (ELCR), external hazard index (H_ex), internal hazard index (H_in), and Gamma Radiation Level Index (RLI) were 0.071, 0.26, 0.095 Bq/kg, and 0.115 Bq/kg, respectively. The study results show that the levels in this region are within the safe limits set by regulations, confirming that the environment is safe.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 3","pages":"Article 101561"},"PeriodicalIF":1.7,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143928571","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":"Applications review on dynamical characteristics of heat transfer enhancement by thermal radiation on nanofluids flow via symmetrical cylinders","authors":"Syed M. Hussain ,&nbsp;Muhammad Amer Qureshi ,&nbsp;S. Suriya Uma Devi ,&nbsp;Rabia Saddar ,&nbsp;Wasim Jamshed ,&nbsp;Mohamed R. Eid ,&nbsp;Abdulrazak H. Almaliki ,&nbsp;Mustafa Bayram","doi":"10.1016/j.jrras.2025.101571","DOIUrl":"10.1016/j.jrras.2025.101571","url":null,"abstract":"<div><div>These days, with the need for greater efficiency and effectiveness in device development, the thermal components of contemporary machinery require close attention. Since then, researchers in this area of thermal engineering have created methods for enhancing heat transmission even more by combining passive strategies. The available scientific research indicates that some studies have looked into how to make the most of long surfaces, symmetric cylinders, and nanofluids (NFs). This work covers the mixed impacts of various prolonged surface forms and NFs across multiple applications. There is a discussion of the kinds of NFs, volume concentration, fin shape, and flow conditions, along with their respective impacts on thermal efficiency. It was determined that the impact of the volume concentration of surfactant nanoparticles and Reynolds number significantly improved the effectiveness of heat transfer. The experiments indicate that increasing the nanoparticle volume concentration to a specific level enhances heat transfer. Denser and more elastic substances would exhibit smaller Brownian motions at concentrations greater than the optimal value. The latest examination of prolonged surfaces revealed unique characteristics of each fin design that influence hydraulic and thermal properties. Thus, the impact of fin use on pressure drops is the primary consideration for investigators designing novel fin forms. The combination of both strategies yielded remarkable outcomes with the NFs and enlarged surfaces. The exceptional outcomes could potentially satisfy the requirements of the engaged technique at a relatively low operating cost.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 3","pages":"Article 101571"},"PeriodicalIF":1.7,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922081","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":"Thermal radiation and local thermal non-equilibrium effects on bioconvection hybrid nanofluid using classical and modified Hamilton-Crosser models","authors":"Naif Khalaf Alshammari ,&nbsp;Mostafa Mohamed Okasha ,&nbsp;Fuad A.M. Al-Yarimi ,&nbsp;Dennis Ling Chuan Ching ,&nbsp;Abid Ali Memon ,&nbsp;Munawar Abbas ,&nbsp;Ilyas Khan ,&nbsp;Nidhal Ben Khedher","doi":"10.1016/j.jrras.2025.101573","DOIUrl":"10.1016/j.jrras.2025.101573","url":null,"abstract":"<div><div>This article presents a brief analysis of the effect of thermal radiation and local thermal non-equilibrium effects on gyrotactic and Oxytactic microbes in bioconvection flow of hybrid nanofluid using classical and modified Hamilton-Crosser models. In a variety of systems, such as enzyme biosensors, bacterial-powered micromixers, microbial fuel cells, chip-shaped microdevices like micro-volumes and bio-microsystems like microfluidic devices, the incorporation of oxytactic and gyrotactic microbes into nanoparticles increases their thermal efficiency. By enhancing wastewater treatment processes and encouraging microbes to more effectively break down pollutants, this technique can help environmental engineering. By encouraging the improvement of more efficient photobioreactors, it increases the production of biofuel in the field of renewable energy. Materials scientists could use this concept to develop controlled nanostructured materials with predictable thermal and compositional characteristics. With the use of suitable similarity variables, the MATLAB solver bvp4c program can be used to numerically solve the system of ODEs (ordinary differential equations) that are produced using the leading PDEs (partial differential equations). As the inter-phase heat transfer characteristic increases, the liquid and solid phases' respective thermal profiles increase and decrease.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 3","pages":"Article 101573"},"PeriodicalIF":1.7,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143916132","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":"Dynamics of activation energy and gyrotactic microorganisms on radiative Williamson nanofluid with Soret and Dufour bounded by porous nonlinearly stretching surface","authors":"Muhammad Jawad ,&nbsp;Aaqib Majeed ,&nbsp;Walid Abdelfattah ,&nbsp;Gabriella Bognár ,&nbsp;Sarfaraz Kamangar ,&nbsp;A.S. Hendy","doi":"10.1016/j.jrras.2025.101595","DOIUrl":"10.1016/j.jrras.2025.101595","url":null,"abstract":"<div><div>Cross-diffusion refers to the simultaneous diffusion of multiple species within a mixture, a phenomenon that portrays a precarious role in various material, environmental and industrial system. This investigation focuses on inspecting the impressions of cross-diffusion on electromagnetics Williamson nanofluid flowing over due to nonlinearly stretching flat surface. The flow is bounded by Darcy-Forchheimer porous medium. The study carefully considers the opposing appearances of motile microorganisms, Soret, and Dufour phenomena. For motivation of problem the influence of Brownian diffusion thermal radiation and thermophoresis have been taken into account. Similarity transformations are used to transform nonlinear partial differential equations of governing system into ordinary differential equations. These ODEs are then integrated numerically using ND solve command in MATHEMATICA and bvp4c function of MATLAB combined with the shooting approach. The outcomes reveal that the speed of fluid decreases with higher porosity factors and stronger magnetic fields. Higher Prandtl number, causes a deceleration in the temperature profile, but increases with increased thermophoresis, enhanced Brownian motion and higher radiation levels. The concentration profile is enhances with greater activation energy and stronger Soret number. The accuracy of present outcomes a comparisons with previous literature is and shows outstanding agreement.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 3","pages":"Article 101595"},"PeriodicalIF":1.7,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143916133","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":"Integrated Taguchi-GRA-PCA for optimizing the heat transfer performance of trihybrid Casson nanofluid flow over stretching sheet with quadratic velocity","authors":"Meshal Shutaywi ,&nbsp;Jawad Raza ,&nbsp;Kholod M. Abualnaja ,&nbsp;Zahir Shah ,&nbsp;Narcisa Vrinceanu ,&nbsp;Wejdan Deebani","doi":"10.1016/j.jrras.2025.101570","DOIUrl":"10.1016/j.jrras.2025.101570","url":null,"abstract":"<div><div>The necessity for effective heat transfer fluids in various technical and business applications has resulted in extensive study into nanofluids. Nanofluids' unique attribute is significantly better thermal conductivity than other conventional fluids, making them an appealing option for improving thermal system functionality. This study uses computational methods to investigate a two-dimensional steady magneto-hydrodynamics (MHD) flow using an incompressible, electrically conducting trihybrid nanofluid (THNF) across a stretching/shrinking surface. The fluid flows along a flat surface that can either expand or contract and can modify its speed in a curved way. We considered surface velocity to be in quadratic form <span><math><mrow><msub><mi>u</mi><mi>w</mi></msub><mrow><mo>(</mo><mi>x</mi><mo>)</mo></mrow><mo>=</mo><mi>a</mi><mi>x</mi><mo>+</mo><mi>b</mi><msup><mi>x</mi><mn>2</mn></msup></mrow></math></span>. The work aims to analyze the heat transfer in the THNF flow subjected to the magnetic field. The study examined the effects on the flow and thermal fields of the governing factors, which include the shrinking/stretching parameter <span><math><mrow><mi>λ</mi></mrow></math></span>, suction/injection parameter <span><math><mrow><mi>S</mi></mrow></math></span>, Casson fluid parameter <span><math><mrow><mi>β</mi><mtext>,</mtext></mrow></math></span> and magnetic parameter <span><math><mrow><mi>M</mi></mrow></math></span>. The governing partial differential equations (PDEs) are converted into ordinary differential equations (ODEs) and then solved numerically. We have also utilized Grey Relational Analysis (GRA) and Principal Component Analysis (PCA) to optimize the response function by utilizing the best combination of the values of physical parameters <span><math><mrow><mo>{</mo><mrow><mi>λ</mi><mo>,</mo><mi>β</mi><mo>,</mo><mi>M</mi><mo>,</mo><mi>R</mi><mi>d</mi></mrow><mo>}</mo></mrow></math></span>. The results show that with the increase in the stretching parameter <span><math><mrow><mi>λ</mi><mo>∈</mo><mrow><mo>{</mo><mrow><mn>0.1</mn><mo>,</mo><mn>0.4</mn><mo>,</mo><mn>0.7</mn><mo>,</mo><mn>1</mn></mrow><mo>}</mo></mrow></mrow></math></span>, the velocity profile <span><math><mrow><mo>(</mo><mrow><msup><mi>f</mi><mo>′</mo></msup><mrow><mo>(</mo><mi>η</mi><mo>)</mo></mrow></mrow><mo>)</mo></mrow></math></span> got improved. The study also revealed that both the Taguchi-GRA and Taguchi-GRA-PCA methods identified the same ideal parameter set. The best parameters combination identified is <span><math><mrow><mo>{</mo><mrow><mi>λ</mi><mn>4</mn><mo>,</mo><mi>β</mi><mn>1</mn><mo>,</mo><mi>M</mi><mn>4</mn><mo>,</mo><mi>R</mi><mi>d</mi><mn>2</mn></mrow><mo>}</mo></mrow></math></span>.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 3","pages":"Article 101570"},"PeriodicalIF":1.7,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922080","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 hybrid deep learning model for mammographic breast cancer detection: Multi-autoencoder and attention mechanisms","authors":"Long Jun Yan ,&nbsp;Lei Wu ,&nbsp;Meng Xia ,&nbsp;Lan He","doi":"10.1016/j.jrras.2025.101578","DOIUrl":"10.1016/j.jrras.2025.101578","url":null,"abstract":"<div><h3>Objective</h3><div>This study aims to develop a robust diagnostic framework for breast cancer detection in mammographic images by integrating multi-autoencoder-based feature extraction with attention mechanisms. The objective is to address key limitations in traditional and state-of-the-art methods, including limited adaptability, manual feature dependency, and lack of interpretability, ensuring enhanced diagnostic accuracy and clinical utility.</div></div><div><h3>Materials and methods</h3><div>This study utilizes a multi-center dataset of 5987 mammograms (malignant: 36 %, benign: 31.9 %, normal: 32.1 %). Images were standardized to 256 × 256 pixels, with intensity normalization and augmentation. A multi-autoencoder framework with six independently pre-trained autoencoders extracted diagnostic features. Recursive Feature Elimination (RFE) with XGBoost was applied for feature selection. Attention mechanisms prioritized diagnostically significant regions. Classification performance was evaluated using accuracy, sensitivity, specificity, F1-score, and AUC-ROC, while segmentation was assessed using IoU, Dice score, and localization accuracy. Five-fold cross-validation ensured robustness, and Adam optimizer with early stopping was used for optimal model training.</div></div><div><h3>Results</h3><div>The proposed framework demonstrates high accuracy in both segmentation and classification for breast cancer detection. Attention-based segmentation achieved 91.5 % localization accuracy, with IoU = 0.87 and a Dice score of 0.89, ensuring precise identification of diagnostic regions. The multi-autoencoder classification model attained 94.2 % sensitivity and 96.4 % AUC in training, with 92.4 % sensitivity and 95.8 % AUC on independent testing, outperforming traditional statistical features. XGBoost surpassed other classifiers, including Random Forest, SVM, and Logistic Regression. These results validate the model's robustness, interpretability, and clinical applicability, establishing an AI-driven diagnostic tool for accurate breast cancer segmentation and classification.</div></div><div><h3>Conclusions</h3><div>The proposed framework advances breast cancer detection by offering high accuracy, adaptability, and interpretability. Future work should explore multimodal imaging integration and lightweight implementations for real-time deployment in clinical environments.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 3","pages":"Article 101578"},"PeriodicalIF":1.7,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143916156","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}