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Effectiveness of Microlearning as an Additional Teaching Instrument in Orthopaedics and Traumatology University Course 微课作为矫形外科和创伤学大学课程额外教学工具的有效性
Pub Date : 2024-07-16 DOI: 10.3991/ijoe.v20i10.49543
Petar Molchovski, K. Tokmakova, D. Tokmakov
Orthopedics and traumatology are clinical specialties that require continuous learning and skill enhancement. Traditional teaching methods may not always be sufficient to meet the needs of contemporary learners. This study aims to compare the effectiveness of microlearning as an additional tool in orthopedics and traumatology university courses alongside traditional teaching methods. The study concluded that microlearning significantly improved students’ knowledge retention, practical skills, and overall performance compared to traditional teaching methods alone. The findings suggest that integrating microlearning into orthopedics and traumatology curricula can improve student learning outcomes and better prepare them for real-world practice.
矫形外科和创伤学是需要不断学习和提高技能的临床专科。传统的教学方法不一定能满足当代学习者的需求。本研究旨在比较微课作为矫形外科和创伤学大学课程的额外工具与传统教学方法的有效性。研究得出结论,与单纯的传统教学方法相比,微课能显著提高学生的知识保持率、实践技能和整体表现。研究结果表明,将微课整合到矫形外科和创伤学课程中可以提高学生的学习效果,使他们更好地为实际工作做好准备。
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引用次数: 0
A Flexible Practicum Model on Education: Hybrid Learning Integrated Remote Laboratory Activity Design 灵活的教育实习模式:混合式学习集成远程实验室活动设计
Pub Date : 2024-07-16 DOI: 10.3991/ijoe.v20i10.48031
Mardhiah Masril, N. Jalinus, Ridwan, Ambiyar, Sukardi, Dedy Irfan
This study’s objective was to create a hybrid learning-integrated remote laboratory model with validity and practicality. This model has four learning spaces, namely live synchronous, virtual synchronous, self-paced asynchronous, and collaborative asynchronous, so it can support flexible learning. Besides that, this learning model is also based on cognitivism, connectivism, constructivism, behaviourism learning theories and Bloom’s digital taxonomy. The hybrid learning integrated remote laboratory model consists of six syntaxes: 1) issue; 2) investigation; 3) team discussion to solve problems; 4) experiment using a remote laboratory; 5) analysis and evaluation; and 6) explore new solutions. Focus group discussions (FGD) were used to collect high-quality data by seven experts in learning models, vocational education, language and technology. The hybrid learning-integrated remote laboratory model quality analysis used Aiken’s V. The result showed that the hybrid learning integratedremote laboratory model content is valid, with a validity value of 0.87. The practicality analysis result showed that the average percentage of the assessments from lecturers and students was 88.16%, so it can be concluded that it has a high validity value and is very practical.
本研究的目标是创建一个具有有效性和实用性的混合学习一体化远程实验室模式。该模式有四个学习空间,即实时同步、虚拟同步、自定进度异步和协作异步,因此可以支持灵活的学习。此外,该学习模式还以认知主义、联结主义、建构主义、行为主义学习理论和布鲁姆数字分类法为基础。混合学习综合远程实验室模式由六个语法组成:1)问题;2)调查;3)团队讨论解决问题;4)使用远程实验室进行实验;5)分析和评估;6)探索新的解决方案。学习模式、职业教育、语言和技术方面的七位专家通过焦点小组讨论(FGD)收集了高质量的数据。混合学习一体化远程实验室模式的质量分析采用了艾肯 V,结果表明混合学习一体化远程实验室模式的内容是有效的,有效值为 0.87。实用性分析结果显示,讲师和学生的平均评价比例为 88.16%,因此可以得出结论,该模式具有较高的效度值和很强的实用性。
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引用次数: 0
Lung Sound Classification for Respiratory Disease Identification Using Deep Learning: A Survey 利用深度学习进行肺部声音分类以识别呼吸系统疾病:调查
Pub Date : 2024-07-16 DOI: 10.3991/ijoe.v20i10.49585
Thinira Wanasinghe, Sakuni Bandara, Supun Madusanka, D. Meedeniya, M. Bandara, Isabel De la Torre Díez
Integrating artificial intelligence (AI) into lung sound classification has markedly improved respiratory disease diagnosis by analysing intricate patterns within audio data. This study is driven by the widespread issue of lung diseases, which affect around 500 million people globally. Early detection of respiratory diseases is crucial for delivering timely and effective treatment. Our study consists of a comprehensive survey of lung sound classification methodologies, exploring the advancements made in leveraging AI to identify and classify respiratory diseases. This survey thoroughly investigates lung sound classification models, along with data augmentation, feature extraction, explainable techniques and support tools to improve systems for diagnosing respiratory conditions. Our goal is to provide meaningful insights for healthcare professionals, researchers and technologists who are dedicated to developing methodologies for the early detection of pulmonary diseases. The paper provides a summary of the current status of lung sound classification research, highlighting both advancements and challenges in the use of AI for more accurate and efficient diagnostic methods in respiratory healthcare.
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引用次数: 0
An Algorithm for the Estimation of Hemoglobin Level from Digital Images of Palpebral Conjunctiva Based in Digital Image Processing and Artificial Intelligence 基于数字图像处理和人工智能的睑结膜数字图像血红蛋白水平估算算法
Pub Date : 2024-07-16 DOI: 10.3991/ijoe.v20i10.48331
Guillermo Moreno, Abdigal Camargo, Luis Ayala, Mirko Zimic, C. del Carpio
Anemia is a common problem that affects a significant part of the world’s population, especially in impoverished countries. This work aims to improve the accessibility of remote diagnostic tools for underserved populations. Our proposal involves implementing algorithms to estimate hemoglobin levels using images of the eyelid conjunctiva and a calibration label captured with a mid-range cell phone. We propose three algorithms: one for calibration label segmentation, another for palpebral conjunctiva segmentation, and the last one for estimating hemoglobin levels based on the segmented images from the previous algorithms. Experiments were performed using a data set of children’s eyelid images and calibration stickers. An L1 norm error of 0.72 g/dL was achieved using the SLIC-GAT model to estimate the hemoglobin level. In conclusion, the integration of these segmentation and regression methods improved the estimation accuracy compared to current approaches, considering that the source of the images was a mid-range commercial camera. The proposed method has the potential for mass screening in low-income rural populations as it is non-invasive, and its simplicity makes it feasible for community health workers with basic training to perform the test. Therefore, this tool could contribute significantly to efforts aimed at combating childhood anemia.
贫血是影响世界大部分人口的常见问题,尤其是在贫困国家。这项工作旨在为得不到充分服务的人群提供更方便的远程诊断工具。我们的建议包括利用眼睑结膜图像和中档手机捕捉的校准标签,实施估算血红蛋白水平的算法。我们提出了三种算法:一种用于校准标签分割,另一种用于睑结膜分割,最后一种用于根据前一种算法分割的图像估算血红蛋白水平。实验使用了儿童眼睑图像和校准贴纸数据集。使用 SLIC-GAT 模型估计血红蛋白水平的 L1 标准误差为 0.72 g/dL。总之,考虑到图像来源是一台中端商用相机,与现有方法相比,这些分割和回归方法的整合提高了估算精度。所提出的方法具有在低收入农村人口中进行大规模筛查的潜力,因为它是非侵入性的,而且其简便性使受过基本培训的社区卫生工作者也能进行测试。因此,该工具可为防治儿童贫血做出重大贡献。
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引用次数: 0
Statistical Analysis of Features for Detecting Leukemia 检测白血病特征的统计分析
Pub Date : 2024-07-16 DOI: 10.3991/ijoe.v20i10.47157
Vandana Khobragade, Jagannath H. Nirmal, Aayesha Hakim
In this age of digital microscopy, image processing, statistical analysis, categorization, and systems for decision-making have become essential tools for medical diagnostics research. By visualizing and analyzing images, clinicians can identify anomalies in intracellular structure. Leukemia is a cancerous condition marked by an unregulated increase in aberrant white blood cells (WBCs). Recognizing acute leukemia tumor cells in blood smear images (BSI) is a challenging assignment. Image segmentation is regarded as the most significant step in the automated identification of this disease. The innovative concavity-based segmentation algorithm is employed in this study to segment WBC in sub-images from the ALLIDB2 database. The concave endpoints and elliptical features are used in the segmentation step of convex-shaped cell images. The procedure involves the extraction of contour evidence, which detects the visible section of each object, and contour estimation, which corresponds to the final object’s contours. Following the identification of the cells and their internal structure by concavity-based segmentation, the cells are categorized based on their morphological and statistical features. The method was evaluated using a public dataset meant to test classification and segmentation approaches. The statistical tool SPSS is used to independently check the significance of derived features. For classification, significant features are passed into machine learning techniques such as support vector machines (SVM), k-nearest neighbor (KNN), neural networks (NN), decision trees (DT), and Nave Bayes (NB). With an AUC of 98.9% and a total accuracy of 95%, the neural network model performed better. We advocate using the neural network model to identify acute leukemia cells based on its accuracy.
在数字显微镜时代,图像处理、统计分析、分类和决策系统已成为医学诊断研究的重要工具。通过对图像进行可视化分析,临床医生可以发现细胞内结构的异常。白血病是一种癌症,其特征是异常白细胞(WBC)不受控制地增加。在血液涂片图像(BSI)中识别急性白血病肿瘤细胞是一项具有挑战性的任务。图像分割被认为是自动识别这种疾病的最重要步骤。本研究采用创新的基于凹面的分割算法来分割 ALLIDB2 数据库子图像中的白细胞。凹端点和椭圆特征用于凸形细胞图像的分割步骤。这一过程包括提取轮廓证据(检测每个物体的可见部分)和轮廓估计(对应于最终物体的轮廓)。通过基于凹度的分割识别细胞及其内部结构后,再根据细胞的形态和统计特征对细胞进行分类。我们使用一个公共数据集对该方法进行了评估,该数据集旨在测试分类和分割方法。统计工具 SPSS 用于独立检查衍生特征的重要性。在分类时,重要的特征会被导入机器学习技术,如支持向量机(SVM)、k-近邻(KNN)、神经网络(NN)、决策树(DT)和奈维贝叶斯(NB)。神经网络模型的 AUC 为 98.9%,总准确率为 95%,表现更好。基于神经网络模型的准确性,我们主张使用该模型来识别急性白血病细胞。
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引用次数: 0
Fabrication of TiO2 Nanoparticle Coating on Stainless Steel 316L and Its Assessment for Orthopaedic Applications 不锈钢 316L 上二氧化钛纳米粒子涂层的制备及其骨科应用评估
Pub Date : 2024-07-16 DOI: 10.3991/ijoe.v20i10.49177
Manjit Singh Jadon, Sandeep Kumar
The study aims to investigate the efficacy of titanium dioxide (TiO2) nanoparticle coating on stainless steel 316L (SS 316L) orthopaedic implants to enhance their biocompatibility, osseointegration, and durability. The TiO2 nanoparticles were synthesized via the hydrothermal method and extensively characterized for composition, crystallinity, and morphology using techniques such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM) with energy dispersive X-ray analysis (EDX), corroborated by elemental mapping. SEM and XRD analyses revealed the synthesized nanoparticles have a spherical shape and an average size of approximately 23 nanometres. The synthesized TiO2 nanoparticles were uniformly coated on SS 316L substrates using the spin coating technique, as confirmed by SEM images. Cell viability of the synthesized TiO2 nanoparticles, as well as uncoated and TiO2 nanoparticle-coated SS 316L substrates, was evaluated using the MTT (3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide) assay against the NIH-3T3 mouse embryonic fibroblast cell line. The results demonstrated that the TiO2 nanoparticle-coated SS 316L substrate showed a significant increase of 22.87% in cell viability as compared to the uncoated SS 316L substrate. A ball-on-disc tribometer was employed to assess wear and friction resistance at various speeds, viz., 150 rpm, 300 rpm, and 450 rpm, under 30N load conditions for five minutes. The results collectively indicate a substantial improvement in the performance of TiO2 nanoparticle-coated SS 316L substrates for orthopaedic applications.
本研究旨在探讨二氧化钛(TiO2)纳米粒子涂层在不锈钢 316L (SS 316L)骨科植入物上的功效,以增强其生物相容性、骨结合性和耐用性。通过水热法合成了二氧化钛纳米粒子,并利用 X 射线衍射 (XRD)、傅立叶变换红外光谱 (FTIR)、扫描电子显微镜 (SEM) 和能量色散 X 射线分析 (EDX) 等技术对其成分、结晶度和形态进行了广泛表征,并通过元素图谱进行了证实。扫描电子显微镜和 XRD 分析表明,合成的纳米粒子呈球形,平均尺寸约为 23 纳米。利用旋涂技术将合成的 TiO2 纳米粒子均匀地涂在 SS 316L 基质上,这一点已通过扫描电镜图像得到证实。使用 MTT(3-(4, 5-二甲基噻唑-2-基)-2, 5-二苯基溴化四氮唑)测定法对 NIH-3T3 小鼠胚胎成纤维细胞系评估了合成的 TiO2 纳米粒子以及未涂层和涂层 TiO2 纳米粒子的 SS 316L 基底的细胞活力。结果表明,与未涂覆的 SS 316L 基质相比,涂覆了 TiO2 纳米粒子的 SS 316L 基质的细胞存活率显著提高了 22.87%。在 30N 负载条件下,使用盘上球摩擦仪在不同转速(即 150 rpm、300 rpm 和 450 rpm)下评估磨损和摩擦阻力,持续时间为五分钟。总的结果表明,TiO2 纳米粒子涂层的 SS 316L 基材在矫形外科应用中的性能得到了大幅提高。
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引用次数: 0
e-LSTM: EfficientNet and Long Short-Term Memory Model for Detection of Glaucoma Diseases e-LSTM:用于检测青光眼疾病的高效网络和长短期记忆模型
Pub Date : 2024-07-16 DOI: 10.3991/ijoe.v20i10.48603
Wiharto, Wimas Tri Harjoko, E. Suryani
Glaucoma is an eye disease that often has no symptoms until it is advanced. According to the World Health Organization (WHO), after cataracts, glaucoma is the second-leading cause of permanent blindness globally and is expected to affect 111.8 million patients by 2040. Early detection of glaucoma is important to reduce the risk of permanent blindness. Detection is achieved by structural measurement of early thinning of the retinal nerve fiber layer (RNFL). The RNFL is the portion of the retina located outside the optic nerve head (ONH) and can be observed in fundus images of the retina. Analysis of retinal fundus images can be performed with computer assistance using machine learning, especially deep learning. This study proposes a deep learning-based model, a convolutional neural network (CNN) using the EfficientNet architecture combined with long short-term memory (LSTM), for laucoma detection. Using ACRIMA, DRISHTI-GS, and RIM-ONE DL datasets with k-fold cross-validation, the model achieved high performance on the ACRIMA dataset: accuracy 0.9799, loss 0.0596, precision 0.9802, sensitivity 0.9799, specificity 0.9771, and F1score 0.9799. This EfficientNet and LSTM combination (e-LSTM) outperformed previous studies, offering a promising alternative for evaluating retinal fundus images in glaucoma detection.
青光眼是一种眼科疾病,在晚期之前往往没有任何症状。根据世界卫生组织(WHO)的数据,青光眼是继白内障之后导致全球永久性失明的第二大原因,预计到 2040 年将有 1.118 亿患者受到青光眼的影响。早期发现青光眼对于降低永久性失明的风险非常重要。检测的方法是对视网膜神经纤维层(RNFL)的早期变薄进行结构测量。视网膜神经纤维层是视网膜上位于视神经头(ONH)以外的部分,可在视网膜的眼底图像中观察到。视网膜眼底图像的分析可在计算机辅助下利用机器学习,尤其是深度学习来完成。本研究提出了一种基于深度学习的模型--卷积神经网络(CNN),采用 EfficientNet 架构并结合长短期记忆(LSTM),用于检测白内障。该模型使用ACRIMA、DRISHTI-GS和RIM-ONE DL数据集进行k-fold交叉验证,在ACRIMA数据集上取得了很高的性能:准确率为0.9799,损失为0.0596,精确度为0.9802,灵敏度为0.9799,特异性为0.9771,F1score为0.9799。该 EfficientNet 和 LSTM 组合(e-LSTM)的表现优于之前的研究,为青光眼检测中的视网膜眼底图像评估提供了一种有前途的替代方法。
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引用次数: 0
Classification of Alzheimer’s Disease Based on Deep Learning Using Medical Images 基于深度学习的阿尔茨海默病分类(使用医学图像
Pub Date : 2024-07-16 DOI: 10.3991/ijoe.v20i10.49089
Hugo Vega-Huerta, Kevin Renzo Pantoja-Pimentel, Sebastian Yimmy Quintanilla-Jaimes, G. Maquen-Niño, Percy De-La-Cruz-VdV, Luis Guerra-Grados
Neurodegenerative disorders, notably Alzheimer’s, pose an escalating global health challenge. Marked by the degeneration of brain neurons, these conditions lead to a gradual decline in nerve cells. Worldwide, over 55 million people grapple with dementia, with Alzheimer’s prominently impacting the aging demographic. The primary hurdle to early Alzheimer’s detection is the widespread lack of awareness. The main goal is to design and implement an artificial intelligence system using deep learning (DL) to detect Alzheimer’s disease (AD) through medical images and classify them into various stages, such as non-demented, moderate dementia, mild dementia, and very mild dementia. The dataset contains 6400 magnetic resonance images in .jpg format, with standardized dimensions of 176 × 208 pixels. To demonstrate the advantages of data augmentation and transformation techniques, four scenarios were created: two without these techniques, utilizing the Adam and SGD optimizers, and two with these techniques, also employing the Adam and SGD optimizers, respectively. The main results revealed that scenarios utilizing these techniques exhibited more stable performance when validated with a new dataset. Scenario 3, using the Adam optimizer, achieved a weighted average accuracy of 91.83%, whereas scenario 4, employing the SGD optimizer, reached 87.58% accuracy. In contrast, scenarios 1 and 2, which omitted these techniques, obtained low accuracies below 55%. It is concluded that classifying AD with a DL model exceeding 90% accuracy is feasible. This is the importance of utilizing data augmentation and transformation techniques to improve generalizability to input image variations, which is a consistent factor in the healthcare sector.
神经退行性疾病,尤其是阿尔茨海默氏症,对全球健康构成了日益严峻的挑战。这些疾病以大脑神经元退化为标志,导致神经细胞逐渐衰退。全球有 5500 多万人患有痴呆症,其中阿尔茨海默氏症对老龄人口的影响尤为突出。早期发现阿尔茨海默氏症的主要障碍是人们普遍缺乏认识。我们的主要目标是利用深度学习(DL)设计并实现一个人工智能系统,通过医学影像检测阿尔茨海默病(AD),并将其分为不同阶段,如非痴呆、中度痴呆、轻度痴呆和极轻度痴呆。数据集包含 6400 张 .jpg 格式的磁共振图像,标准化尺寸为 176 × 208 像素。为了证明数据增强和转换技术的优势,我们创建了四个场景:两个不使用这些技术,但使用了 Adam 和 SGD 优化器;两个使用了这些技术,但也分别使用了 Adam 和 SGD 优化器。主要结果显示,使用这些技术的方案在使用新数据集进行验证时表现出更稳定的性能。方案 3 采用 Adam 优化器,加权平均准确率达到 91.83%,而方案 4 采用 SGD 优化器,准确率达到 87.58%。相比之下,省略了这些技术的方案 1 和方案 2 的准确率较低,低于 55%。由此得出结论,使用准确率超过 90% 的 DL 模型对 AD 进行分类是可行的。这说明了利用数据增强和转换技术提高对输入图像变化的通用性的重要性,而这正是医疗保健领域的一个一贯因素。
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引用次数: 0
Empowering Diabetic Eye Disease Detection: Leveraging Differential Evolution for Optimized Convolution Neural Networks 增强糖尿病眼病检测能力:利用差分进化优化卷积神经网络
Pub Date : 2024-07-16 DOI: 10.3991/ijoe.v20i10.49187
Rahul Ray, Sudarson Jena, Priyadarsan Parida, Laxminarayan Dash, Sangita Kumari Biswal
Diabetic eye detection has become a major concern across the globe, which could be effectively addressed by automated detection using a deep convolutional neural network (DCNN). CNN models have better detection and classification accuracy than other state-of-theart models. In this paper, a differential evolution (DE)-optimized CNN has been proposed for the single-step classification of diabetic retinopathy (DR) and glaucoma images. DE has been used to find out the optimized values of four hyper-parameters of CNN, i.e., the number of filters in the first layer, the filter size, the number. of convolution layers, and the number of strides. Simulation has been done using three publicly available datasets, and the accuracy obtained is 87.8%, 92.3%, and 88.7%, respectively, which outperforms other models. No other state-of-the-art model has used DE for hyper-parameter tuning in CNN models. Also, no other additional segmentation approach or handcrafted features have been used. The model has been kept simple to reduce computational costs.
糖尿病眼检测已成为全球关注的主要问题,使用深度卷积神经网络(DCNN)进行自动检测可有效解决这一问题。与其他先进模型相比,卷积神经网络模型具有更好的检测和分类准确性。本文针对糖尿病视网膜病变(DR)和青光眼图像的单步分类提出了微分进化(DE)优化 CNN。微分进化论用于找出 CNN 四个超参数的优化值,即第一层的滤波器数量、滤波器大小、卷积层数和步长数。利用三个公开的数据集进行了仿真,得到的准确率分别为 87.8%、92.3% 和 88.7%,优于其他模型。其他最先进的模型都没有在 CNN 模型中使用 DE 进行超参数调整。此外,也没有使用其他额外的分割方法或手工特征。为了降低计算成本,该模型一直保持简单。
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引用次数: 0
Revolutionizing Brain Tumor Analysis: A Fusion of ChatGPT and Multi-Modal CNN for Unprecedented Precision 脑肿瘤分析的革命性突破:融合 ChatGPT 和多模态 CNN,实现前所未有的精确性
Pub Date : 2024-05-21 DOI: 10.3991/ijoe.v20i08.47347
Soha Rawas, A. Samala
In this study, we introduce an innovative approach to significantly enhance the precision and interpretability of brain tumor detection and segmentation. Our method ingeniously integrates the cutting-edge capabilities of the ChatGPT chatbot interface with a state-of-the-art multi-modal convolutional neural network (CNN). Tested rigorously on the BraTS dataset, our method showcases unprecedented performance, outperforming existing techniques in terms of both accuracy and efficiency, with an impressive Dice score of 0.89 for tumor segmentation. By seamlessly integrating ChatGPT, our model unveils deep-seated insights into the intricate decision-making processes, providing researchers and physicians with invaluable understanding and confidence in the results. This groundbreaking fusion holds immense promise, poised to revolutionize the landscape of medical imaging, with far-reaching implications for clinical practice and research. Our study exemplifies the transformative potential achieved through the synergistic combination of multi-modal CNNs and natural language processing, paving the way for remarkable advancements in brain tumor detection and segmentation.
在本研究中,我们引入了一种创新方法,以显著提高脑肿瘤检测和分割的精确度和可解释性。我们的方法巧妙地将 ChatGPT 聊天机器人界面的尖端功能与最先进的多模态卷积神经网络(CNN)集成在一起。我们的方法在 BraTS 数据集上进行了严格测试,显示出前所未有的性能,在准确性和效率方面均优于现有技术,肿瘤分割的 Dice 得分为 0.89,令人印象深刻。通过无缝集成 ChatGPT,我们的模型揭示了对复杂决策过程的深层见解,为研究人员和医生提供了宝贵的理解和对结果的信心。这种开创性的融合技术前景广阔,有望彻底改变医学成像的格局,对临床实践和研究具有深远影响。我们的研究体现了多模态 CNN 与自然语言处理的协同组合所带来的变革潜力,为脑肿瘤检测和分割领域的显著进步铺平了道路。
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引用次数: 0
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International Journal of Online and Biomedical Engineering (iJOE)
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