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Recent applications of EEG-based brain-computer-interface in the medical field 被引量:8
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作者 Xiu-Yun Liu Wen-Long Wang +39 位作者 Miao Liu Ming-Yi Chen Tânia Pereira Desta Yakob Doda Yu-Feng Ke Shou-Yan Wang Dong Wen Xiao-Guang Tong Wei-Guang Li Yi Yang Xiao-Di Han Yu-Lin Sun Xin Song Cong-Ying Hao Zi-Hua Zhang Xin-Yang Liu Chun-Yang Li Rui Peng Xiao-Xin Song Abi Yasi Mei-Jun Pang Kuo Zhang Run-Nan He Le Wu Shu-Geng Chen Wen-Jin Chen Yan-Gong Chao Cheng-Gong Hu Heng Zhang Min Zhou Kun Wang Peng-Fei Liu Chen Chen Xin-Yi Geng Yun Qin Dong-Rui Gao En-Ming Song Long-Long Cheng Xun Chen Dong Ming 《Military Medical Research》 2025年第8期1283-1322,共40页
Brain-computer interfaces(BCIs)represent an emerging technology that facilitates direct communication between the brain and external devices.In recent years,numerous review articles have explored various aspects of BC... Brain-computer interfaces(BCIs)represent an emerging technology that facilitates direct communication between the brain and external devices.In recent years,numerous review articles have explored various aspects of BCIs,including their fundamental principles,technical advancements,and applications in specific domains.However,these reviews often focus on signal processing,hardware development,or limited applications such as motor rehabilitation or communication.This paper aims to offer a comprehensive review of recent electroencephalogram(EEG)-based BCI applications in the medical field across 8 critical areas,encompassing rehabilitation,daily communication,epilepsy,cerebral resuscitation,sleep,neurodegenerative diseases,anesthesiology,and emotion recognition.Moreover,the current challenges and future trends of BCIs were also discussed,including personal privacy and ethical concerns,network security vulnerabilities,safety issues,and biocompatibility. 展开更多
关键词 Brain-computer interfaces(BCIs) Medical applications REHABILITATION COMMUNICATION Brain monitoring DIAGNOSIS
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Non-Neural 3D Nasal Reconstruction:A Sparse Landmark Algorithmic Approach for Medical Applications
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作者 Nguyen Khac Toan Ho Nguyen Anh Tuan Nguyen Truong Thinh 《Computer Modeling in Engineering & Sciences》 2025年第5期1273-1295,共23页
This paper presents a novel method for reconstructing a highly accurate 3D nose model of the human from 2D images and pre-marked landmarks based on algorithmic methods.The study focuses on the reconstruction of a 3D n... This paper presents a novel method for reconstructing a highly accurate 3D nose model of the human from 2D images and pre-marked landmarks based on algorithmic methods.The study focuses on the reconstruction of a 3D nose model tailored for applications in healthcare and cosmetic surgery.The approach leverages advanced image processing techniques,3D Morphable Models(3DMM),and deformation techniques to overcome the limita-tions of deep learning models,particularly addressing the interpretability issues commonly encountered in medical applications.The proposed method estimates the 3D coordinates of landmark points using a 3D structure estimation algorithm.Sub-landmarks are extracted through image processing techniques and interpolation.The initial surface is generated using a 3DMM,though its accuracy remains limited.To enhance precision,deformation techniques are applied,utilizing the coordinates of 76 identified landmarks and sub-landmarks.The resulting 3D nose model is constructed based on algorithmic methods and pre-marked landmarks.Evaluation of the 3D model is conducted by comparing landmark distances and shape similarity with expert-determined ground truth on 30 Vietnamese volunteers aged 18 to 47,all of whom were either preparing for or required nasal surgery.Experimental results demonstrate a strong agreement between the reconstructed 3D model and the ground truth.The method achieved a mean landmark distance error of 0.631 mm and a shape error of 1.738 mm,demonstrating its potential for medical applications. 展开更多
关键词 Nose reconstruction 3D reconstruction medical applications algorithmic reconstruction enhanced 3D model
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Clinical observation on the effect of warming meridian medicinal wine,polarized light external application combined with acupuncture and moxibustion on pain after vertebroplasty
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作者 WEN Zhigang LU Shuai CHENG Xiumei 《Journal of Traditional Chinese Medicine》 2025年第3期660-666,共7页
OBJECTIVE:To evaluate the effects of external application of warm meridian medicated wine and polarized light therapy combined with acupuncture on pain management following vertebroplasty. METHODS:A total of 120 patie... OBJECTIVE:To evaluate the effects of external application of warm meridian medicated wine and polarized light therapy combined with acupuncture on pain management following vertebroplasty. METHODS:A total of 120 patients with osteoporotic vertebral compression fractures treated by vertebroplasty at our hospital were divided into four groups. The control group received non-steroidal anti-inflammatory drugs, the Treatment Group Ⅰ received acupuncture alone, Treatment Group Ⅱ was treated with medicated wine for warming meridians alongside polarized light physiotherapy, and Treatment Group Ⅲ received a combination of medicated wine for warming meridians, polarized light therapy, and acupuncture. The clinical efficacy, pain thresholds at various time points, temperature pain threshold, electric pain threshold, quality of life, sleep quality index, lumbar dysfunction index, visual analog scale(VAS) scores, and incidence of adverse reactions were compared and analyzed across the four groups. RESULTS:The total clinical effective rate in Treatment Group Ⅲ was significantly higher than that in the control group, Treatment Group Ⅰ, and Treatment Group Ⅱ(P < 0.05). At 24 and 72 h post-treatment, the VAS scores, temperature pain thresholds, and electric pain thresholds in Treatment Group Ⅲ were significantly lower than those in the control group, Treatment Group Ⅰ, and Treatment Group Ⅱ(P < 0.05). Additionally, quality-of-life scores in Treatment Group Ⅲ were markedly higher compared to the control group, Treatment Group Ⅰ, and Treatment Group Ⅱ, while the Pittsburgh Sleep Quality Index scores, Oswestry Disability Index scores, and incidence of adverse reactions in Treatment Group Ⅲ were significantly lower than in the other groups(P < 0.05). CONCLUSION:The external application of warm meridian medicated wine and polarized light therapy combined with acupuncture significantly reduces postoperative pain following vertebroplasty, enhances lumbar function, and improves both sleep quality and overall quality of life for patients. This approach is recommended for clinical application. 展开更多
关键词 PAIN postoperative VERTEBROPLASTY acupuncture polarized light therapy external application of warm meridian medicated wine
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Advances in Medical Applications of Additive Manufacturing 被引量:10
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作者 Chunxu Li Dario Pisignano +1 位作者 Yu Zhao Jiajia Xue 《Engineering》 SCIE EI 2020年第11期1222-1231,共10页
In the past few decades,additive manufacturing(AM)has been developed and applied as a cost-effective and versatile technique for the fabrication of geometrically complex objects in the medical industry.In this review,... In the past few decades,additive manufacturing(AM)has been developed and applied as a cost-effective and versatile technique for the fabrication of geometrically complex objects in the medical industry.In this review,we discuss current advances of AM in medical applications for the generation of pharmaceuticals,medical implants,and medical devices.Oral and transdermal drugs can be fabricated by a variety of AM technologies.Different types of hard and soft clinical implants have also been realized by AM,with the goal of producing tissue-engineered constructs.In addition,medical devices used for diagnostics and treatment of various pathological conditions have been developed.The growing body of research on AM reveals its great potential in medical applications.The goal of this review is to highlight the usefulness and elucidate the current limitations of AM applications in the medical field. 展开更多
关键词 Additive manufacturing Medical applications PHARMACEUTICS Medical implants Medical devices
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Synthesis,functionalization,and nanomedical applications of functional magnetic nanoparticles 被引量:7
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作者 Zhou Chen Cao Wu +3 位作者 Zhenfeng Zhang Wangping Wu Xuefeng Wang Zhiqiang Yu 《Chinese Chemical Letters》 SCIE CAS CSCD 2018年第11期1601-1608,共8页
Synthesis of magnetic nanoparticles (MNPs) is one of the most active research areas in advanced materials. MNPs that have magnetic properties and other functionalities have been demonstrated to show great promise in... Synthesis of magnetic nanoparticles (MNPs) is one of the most active research areas in advanced materials. MNPs that have magnetic properties and other functionalities have been demonstrated to show great promise in nanomedical applications. This review summarizes the current MNPs preparation, functionalization and stabilization methods. It also analyzes the detailed features of MNPs. And furthermore it highlights some actual case analyses of these MNPs for disease therapy, drug delivery, hyperthermia, bioseparation and bioimaging applications. 展开更多
关键词 Magnetic nanoparticles SYNTHESIS FUNCTIONALIZATION Medical applications NANOMEDICINE
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Impact of mobile health and medical applications on clinical practice in gastroenterology 被引量:3
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作者 Sven Kernebeck Theresa S Busse +4 位作者 Maximilian D Bottcher Jurgen Weitz Jan Ehlers Ulrich Bork Didactics Educational Research in Health 《World Journal of Gastroenterology》 SCIE CAS 2020年第29期4182-4197,共16页
Mobile health apps (MHAs) and medical apps (MAs) are becoming increasinglypopular as digital interventions in a wide range of health-related applications inalmost all sectors of healthcare. The surge in demand for dig... Mobile health apps (MHAs) and medical apps (MAs) are becoming increasinglypopular as digital interventions in a wide range of health-related applications inalmost all sectors of healthcare. The surge in demand for digital medical solutionshas been accelerated by the need for new diagnostic and therapeutic methods inthe current coronavirus disease 2019 pandemic. This also applies to clinicalpractice in gastroenterology, which has, in many respects, undergone a recentdigital transformation with numerous consequences that will impact patients andhealth care professionals in the near future. MHAs and MAs are considered tohave great potential, especially for chronic diseases, as they can support the selfmanagementof patients in many ways. Despite the great potential associated withthe application of MHAs and MAs in gastroenterology and health care in general,there are numerous challenges to be met in the future, including both the ethicaland legal aspects of applying this technology. The aim of this article is to providean overview of the current status of MHA and MA use in the field ofgastroenterology, describe the future perspectives in this field and point out someof the challenges that need to be addressed. 展开更多
关键词 Mobile health Health applications Medical applications Technology TELEMEDICINE Mobile applications SMARTPHONE EHEALTH MHEALTH Digital biomarker Electronic health records
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A Review of Knowledge Graph in Traditional Chinese Medicine:Analysis,Construction,Application and Prospects 被引量:1
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作者 Xiaolong Qu Ziwei Tian +3 位作者 Jinman Cui Ruowei Li Dongmei Li Xiaoping Zhang 《Computers, Materials & Continua》 SCIE EI 2024年第12期3583-3616,共34页
As an advanced data science technology,the knowledge graph systematically integrates and displays the knowledge framework within the field of traditional Chinese medicine(TCM).This not only contributes to a deeper com... As an advanced data science technology,the knowledge graph systematically integrates and displays the knowledge framework within the field of traditional Chinese medicine(TCM).This not only contributes to a deeper comprehension of traditional Chinese medical theories but also provides robust support for the intelligent decision systems and medical applications of TCM.Against this backdrop,this paper aims to systematically review the current status and development trends of TCM knowledge graphs,offering theoretical and technical foundations to facilitate the inheritance,innovation,and integrated development of TCM.Firstly,we introduce the relevant concepts and research status of TCM knowledge graphs.Secondly,we conduct an in-depth analysis of the challenges and trends faced by key technologies in TCM knowledge graph construction,such as knowledge representation,extraction,fusion,and reasoning,and classifies typical knowledge graphs in various subfields of TCM.Next,we comprehensively outline the current medical applications of TCM knowledge graphs in areas such as information retrieval,diagnosis,question answering,recommendation,and knowledge mining.Finally,the current research status and future directions of TCM knowledge graphs are concluded and discussed.We believe this paper contributes to a deeper understanding of the research dynamics in TCM knowledge graphs and provides essential references for scholars in related fields. 展开更多
关键词 Systematic review traditional Chinese medicine knowledge graph deep learning medical applications
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An Application Review of Artificial Intelligence in Prevention and Cure of COVID-19 Pandemic 被引量:1
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作者 Peipeng Yu Zhihua Xia +1 位作者 Jianwei Fei Sunil Kumar Jha 《Computers, Materials & Continua》 SCIE EI 2020年第10期743-760,共18页
Coronaviruses are a well-known family of viruses that can infect humans or animals.Recently,the new coronavirus(COVID-19)has spread worldwide.All countries in the world are working hard to control the coronavirus dise... Coronaviruses are a well-known family of viruses that can infect humans or animals.Recently,the new coronavirus(COVID-19)has spread worldwide.All countries in the world are working hard to control the coronavirus disease.However,many countries are faced with a lack of medical equipment and an insufficient number of medical personnel because of the limitations of the medical system,which leads to the mass spread of diseases.As a powerful tool,artificial intelligence(AI)has been successfully applied to solve various complex problems ranging from big data analysis to computer vision.In the process of epidemic control,many algorithms are proposed to solve problems in various fields of medical treatment,which is able to reduce the workload of the medical system.Due to excellent learning ability,AI has played an important role in drug development,epidemic forecast,and clinical diagnosis.This research provides a comprehensive overview of relevant research on AI during the outbreak and helps to develop new and more powerful methods to deal with the current pandemic. 展开更多
关键词 Artificial intelligence COVID-19 medical applications clinical diagnosis
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Advances in Biomedical Applications of Hydrogels from Seaweed-Derived Sulfated Polysaccharides:Carrageenan,Fucoidan,and Ulvan
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作者 CUI Zhiyong JIANG Fei +2 位作者 LI Luxi CHI Zhe LIU Chenguang 《Journal of Ocean University of China》 SCIE CAS CSCD 2024年第5期1329-1346,共18页
Sulfated polysaccharides extracted from seaweeds,including Carrageenan,Fucoidan and Ulvan,are crucial bioactive compounds known for their diverse beneficial properties,such as anti-inflammatory,antitumor,immunomodulat... Sulfated polysaccharides extracted from seaweeds,including Carrageenan,Fucoidan and Ulvan,are crucial bioactive compounds known for their diverse beneficial properties,such as anti-inflammatory,antitumor,immunomodulatory,antiviral,and anticoagulant effects.These polysaccharides form hydrogels hold immense promise in biomedicine,particularly in tissue engineering,drug delivery systems and wound healing.This review comprehensively explores the sources and structural characteristics of the three important sulfated polysaccharides extracted from different algae species.It elucidates the gelation mechanisms of these polysaccharides into hydrogels.Furthermore,the biomedical applications of these three sulfated polysaccharide hydrogels in wound healing,drug delivery,and tissue engineering are discussed,highlighting their potential in the biomedicine. 展开更多
关键词 SEAWEED sulfated polysaccharides HYDROGELS biomaterials in medical applications
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On Soft Pre-Rough Approximation Space with Applications in Decision Making
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作者 M.El Sayed Wadia Faid Hassan Al-shameri M.A.El Safty 《Computer Modeling in Engineering & Sciences》 SCIE EI 2022年第9期865-879,共15页
A soft,rough set model is a distinctive mathematical model that can be used to relate a variety of real-life data.In the present work,we introduce new concepts of rough set based on soft pre-lower and soft pre-upper a... A soft,rough set model is a distinctive mathematical model that can be used to relate a variety of real-life data.In the present work,we introduce new concepts of rough set based on soft pre-lower and soft pre-upper approximation space.These concepts are soft pre-rough equality,soft pre-rough inclusion,soft pre-rough belonging,soft predefinability,soft pre-internal lower,and soft pre-external lower.We study the properties of these concepts.Finally,we use the soft pre-rough approximation to illustrate the importance of our method in decision-making for Chikungunya medical illnesses.In reality,the impact factors of Chikungunya’s medical infection were determined.Moreover,we develop two new algorithms to address Chikungunya virus issues.Our proposed approach is sensible and effective. 展开更多
关键词 Soft rough set soft pre-rough set approach soft pre-internal lower and soft pre-external upper soft nowhere dense set and Chikungunya medical application intelligence discovery
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MEDICAL APPLICATIONS OF SYNCHROTRON RADIATION
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作者 JIANG Xiao-Ming 《Beijing Synchrotron Radiation Facility》 2001年第2期220-225,共6页
The prineiples,present applications and progress in worldwide laboratories of in-vivo diagnosis and therapyAbstractmethods with synchrotron radiation sources are reviewed.Topics include angiography,computerized tormog... The prineiples,present applications and progress in worldwide laboratories of in-vivo diagnosis and therapyAbstractmethods with synchrotron radiation sources are reviewed.Topics include angiography,computerized tormography,bron-.chography,mammography,and radiation therapy. 展开更多
关键词 synchrotron radiation medical application in-vivo diagnosis radiation therapy
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Applications of medical nanoparticles
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《Chinese Journal of Biomedical Engineering(English Edition)》 2001年第4期157-158,共2页
关键词 applications of medical NANOPARTICLES GENE
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Application of Knitted Fabrics in Technical and Medical Textiles
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作者 Károly LáZáR 《China Textile》 2010年第10期28-33,共6页
Knitted fabrics and knitting technology play very important role on the fields of technical and medical textiles and their importance is ever greater. Experts estimate that their annual consumption is increasing by 3,... Knitted fabrics and knitting technology play very important role on the fields of technical and medical textiles and their importance is ever greater. Experts estimate that their annual consumption is increasing by 3,8 % in average and it can reach about 24 million tons in 2010. Within this the consumption of each sector is increasing. Roughly one third of the world’s fibre consumption is used for production of technical textiles.The term "technical textiles" covers many fields of application that are mirrored in the terminology of Techtextil which is very much used generally when grouping these products. Techtextil differentiates 11 groups and knitted fabrics and products made by knitting technologies can be found in each of them.The lecture introduces such applications on many examples. We think that use of knitting technologies in the development of technical and medical textiles can help this sector to survive this difficult period of the European textile industry. 展开更多
关键词 application of Knitted Fabrics in Technical and Medical Textiles
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Access and Privacy Control for Healthcare Decision Support System:A Smart Medical Data Exchange Engine(SMDEE)
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作者 Imran Khan Javed Rashid +3 位作者 Anwar Ghani Muhammad Shoaib Saleem Muhammad Faheem Humera Khan 《CAAI Transactions on Intelligence Technology》 2025年第6期1616-1632,共17页
Secure and automated sharing of medical information among different medical entities/stakeholders like patients,hospitals,doctors,law enforcement agencies,health insurance companies etc.,in a standard format has alway... Secure and automated sharing of medical information among different medical entities/stakeholders like patients,hospitals,doctors,law enforcement agencies,health insurance companies etc.,in a standard format has always been a challenging problem.Current methods for ensuring compliance with medical privacy laws require specialists who are deeply familiar with these laws'complex requirements to verify the lawful exchange of medical information.This article introduces a Smart Medical Data Exchange Engine(SDEE)designed to automate the extracting of logical rules from medical privacy legislation using advanced techniques.These rules facilitate the secure extraction of information,safeguarding patient privacy and confidentiality.In addition,SMDEE can generate standardised clinical documents according to Health Level 7(HL7)standards and also standardise the nomenclature of requested medical data,enabling accurate decision-making when accessing patient data.All access requests to patient information are processed through SMDEE to ensure authorised access.The proposed system's efficacy is evaluated using the Health Insurance Portability and Accountability Act(HIPAA),a fundamental privacy law in the United States.However,SMDEE's flexibility allows its application worldwide,accommodating various medical privacy laws.Beyond facilitating global information exchange,SMDEE aims to enhance international patients'timely and appropriate treatment. 展开更多
关键词 data protection decision making information retrieval intelligent information processing medical applications privacy issues security security of data
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Novel Fibers Make Electronic Textiles Smart Without Batteries or Chips
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作者 Jennifer Welsh 《Engineering》 2025年第3期3-5,共3页
An April 2024 report in the journal Science suggests that“smart”or“intelligent”textiles are a step closer to making the leap from the lab to real life[1,2].The study details an innovative fiber that gathers energy... An April 2024 report in the journal Science suggests that“smart”or“intelligent”textiles are a step closer to making the leap from the lab to real life[1,2].The study details an innovative fiber that gathers energy from the environment and uses it to send electrical signals and create light,without the need for batteries or chips.The advance yields textiles that can directly respond to users’touch,opening new avenues for intelligent interaction between people and their environments,in addition to enabling potential medical,industrial,and consumer applications. 展开更多
关键词 gathers energy intelligent interaction intelligent textiles industrial applications energy harvesting fibers touch response medical applications electronic textiles
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A Quality of Service Analysis of FPGA-Accelerated Conv2D Architectures for Brain Tumor Multi-Classification
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作者 Ayoub Mhaouch Wafa Gtifa +2 位作者 Turke Althobaiti Hamzah Faraj Mohsen Machhout 《Computers, Materials & Continua》 2025年第9期5637-5663,共27页
In medical imaging,accurate brain tumor classification in medical imaging requires real-time processing and efficient computation,making hardware acceleration essential.Field Programmable Gate Arrays(FPGAs)offer paral... In medical imaging,accurate brain tumor classification in medical imaging requires real-time processing and efficient computation,making hardware acceleration essential.Field Programmable Gate Arrays(FPGAs)offer parallelism and reconfigurability,making them well-suited for such tasks.In this study,we propose a hardware-accelerated Convolutional Neural Network(CNN)for brain cancer classification,implemented on the PYNQ-Z2 FPGA.Our approach optimizes the first Conv2D layer using different numerical representations:8-bit fixed-point(INT8),16-bit fixed-point(FP16),and 32-bit fixed-point(FP32),while the remaining layers run on an ARM Cortex-A9 processor.Experimental results demonstrate that FPGA acceleration significantly outperforms the CPU(Central Processing Unit)based approach.The obtained results emphasize the critical importance of selecting the appropriate numerical representation for hardware acceleration in medical imaging.On the PYNQ-Z2 FPGA,the INT8 achieves a 16.8%reduction in latency and 22.2%power savings compared to FP32,making it ideal for real-time and energy-constrained applications.FP16 offers a strong balance,delivering only a 0.1%drop in accuracy compared to FP32(94.1%vs.94.2%)while improving latency by 5%and reducing power consumption by 11.1%.Compared to prior works,the proposed FPGA-based CNN model achieves the highest classification accuracy(94.2%)with a throughput of up to 1.562 FPS,outperforming GPU-based and traditional CPU methods in both accuracy and hardware efficiency.These findings demonstrate the effectiveness of FPGA-based AI acceleration for real-time,power-efficient,and high-performance brain tumor classification,showcasing its practical potential in next-generation medical imaging systems. 展开更多
关键词 Brain cancer hardware implementation convolutional neural networks performance evaluation efficient computing real-time medical applications
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A Survey of Large-Scale Deep Learning Models in Medicine and Healthcare
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作者 Zhiwei Chen Runze Liu +2 位作者 Shitao Huang Yangyang Guo Yongjun Ren 《Computer Modeling in Engineering & Sciences》 2025年第7期37-81,共45页
The rapid advancement of artificial intelligence technology is driving transformative changes in medical diagnosis,treatment,and management systems through large-scale deep learning models-a process that brings both g... The rapid advancement of artificial intelligence technology is driving transformative changes in medical diagnosis,treatment,and management systems through large-scale deep learning models-a process that brings both groundbreaking opportunities and multifaceted challenges.This study focuses on the medical and healthcare applications of large-scale deep learning architectures,conducting a comprehensive survey to categorize and analyze their diverse uses.The survey results reveal that current applications of large models in healthcare encompass medical data management,healthcare services,medical devices,and preventive medicine,among others.Concurrently,large models demonstrate significant advantages in the medical domain,especially in high-precision diagnosis and prediction,data analysis and knowledge discovery,and enhancing operational efficiency.Nevertheless,we identify several challenges that need urgent attention,including improving the interpretability of large models,strengthening privacy protection,and addressing issues related to handling incomplete data.This research is dedicated to systematically elucidating the deep collaborative mechanisms between artificial intelligence and the healthcare field,providing theoretical references and practical guidance for both academia and industry. 展开更多
关键词 Large models healthcare artificial intelligence data management medical applications
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Eco-Friendly Materials Composed of Cellulose Fibers from Agave Bagasse with Silver Nanoparticles and Shrimp Chitosan
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作者 Belkis Sulbarán-Rangel Jorge Armando Caldera Siller +3 位作者 Salvador García Enríquez JoséAnzaldo-Hernandez Jenny Arratia-Quijada Marianelly Esquivel Alfaro 《Journal of Renewable Materials》 2025年第5期849-863,共15页
In this research,the antibacterial properties of a composite material prepared from agave bagasse cellulose fibers doped with silver nanoparticles and chitosan were studied.The development of composite materials with ... In this research,the antibacterial properties of a composite material prepared from agave bagasse cellulose fibers doped with silver nanoparticles and chitosan were studied.The development of composite materials with antibacterial properties and environmentally friendly based on cellulose fibers from agave bagasse with silver nanoparticles prepared by green synthesis and chitosan from shrimp waste enhances the value of these agro-industrial wastes and offers the opportunity for them to have biomedical applications since these raw materials have been poorly reported for this application.The antibacterial properties of chitosan and silver nanoparticles are already known.However,the combination of silver nanoparticles with cellulose fibers and chitosan has been studied poorly.Green synthesis of silver nanoparticles was carried out,and spherical shape nanoparticles with a size between 20 and 50 nm were obtained by ultraviolet-visible(UV-Vis)spectroscopy and transmission electron microscopy(TEM)analysis.Additionally,in this research,the cellulose obtained from agave bagasse,the chitosan extracted from shrimp shells,and the composite material were characterized by infrared spectroscopy,mechanical analysis,and antibacterial tests.A decrease in the growth of Escherichia coli bacteria with 100%growth inhibition on cellulose,chitosan,and silver nanoparticles composite material and an increase in mechanical properties from 13.67 MPa of cellulose pure to 110 MPa of composite material was observed.These findings support the idea that the composite material has potential use in wound care dressings for antibacterial care. 展开更多
关键词 Biomaterial waste valorization medical applications and environmentally friendly
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A human-robot collaboration method for uncertain surface scanning
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作者 Guanyi Zhao Chao Zeng +1 位作者 Weiyong Si Chenguang Yang 《CAAI Transactions on Intelligence Technology》 2025年第3期666-677,共12页
Robots are increasingly expected to replace humans in many repetitive and high-precision tasks,of which surface scanning is a typical example.However,it is usually difficult for a robot to independently deal with a su... Robots are increasingly expected to replace humans in many repetitive and high-precision tasks,of which surface scanning is a typical example.However,it is usually difficult for a robot to independently deal with a surface scanning task with uncertainties in,for example the irregular surface shapes and surface properties.Moreover,it usually requires surface modelling with additional sensors,which might be time-consuming and costly.A human-robot collaboration-based approach that allows a human user and a robot to assist each other in scanning uncertain surfaces with uniform properties,such as scanning human skin in ultrasound examination is proposed.In this approach,teleoperation is used to obtain the operator's intent while allowing the operator to operate remotely.After external force perception and friction estimation,the orientation of the robot endeffector can be autonomously adjusted to keep as perpendicular to the surface as possible.Force control enables the robotic manipulator to maintain a constant contact force with the surface.And hybrid force/motion control ensures that force,position,and pose can be regulated without interfering with each other while reducing the operator's workload.The proposed method is validated using the Elite robot to perform a mock Bultrasound scanning experiment. 展开更多
关键词 medical applications ROBOTICS
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Propulsion Modeling and Analysis of a Biomimetic Swimmer 被引量:5
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作者 Ngoc San Ha Nam Seo Goo 《Journal of Bionic Engineering》 SCIE EI CSCD 2010年第3期259-266,共8页
We have studied a biomimetic swimmer based on the motion of bacteria such as Escherichia coli (E. coli) theoretically andexperimentally. The swimmer has an ellipsoidal cell body propelled by a helical filament. The pe... We have studied a biomimetic swimmer based on the motion of bacteria such as Escherichia coli (E. coli) theoretically andexperimentally. The swimmer has an ellipsoidal cell body propelled by a helical filament. The performance of this swimmer wasestimated by modeling the dynamics of a swimmer in viscous fluid. We applied the Resistive Force Theory (RFT) on this modelto calculate the linear swimming speed and the efficiency of the model. A parametric study on linear velocity and efficiency tooptimize the design of this swimmer was demonstrated. In order to validate the theoretical results, a biomimetic swimmer wasfabricated and an experiment setup was prepared to measure the swimming speed and thrust force in silicone oil. The experimentalresults agree well with the theoretical values predicted by RFT. In addition, we studied the flow patterns surrounding thefilament with a finite element simulation with different Reynolds number (Re) to understand the mechanism of propulsion. Thesimulation results provide information on the nature of flow patterns generated by swimming filament. Furthermore, the thrustforces from the simulation were compared with the thrust forces from theory. The simulation results are in good agreement withthe theoretical results. 展开更多
关键词 biomimetic microrobots swimming microrobots propulsion of flagella flow visualization medical application
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