Convolutional neural networks

卷积神经网络
  • 文章类型: Journal Article
    目的:本系统综述和荟萃分析旨在评估基于人工智能(AI)的牙齿分割方法在三维锥形束计算机断层扫描(CBCT)图像中的当前性能,与手动分割技术相比,重点在于它们的准确性和效率。
    方法:这篇综述中分析的数据包括利用AI算法在CBCT图像中进行牙齿分割的广泛研究。进行了Meta分析,重点使用骰子相似系数(DSC)对分割结果进行评价。
    方法:PubMed,Embase,Scopus,WebofScience,和IEEEExplore进行了全面搜索,以确定相关研究。研究选择初始搜索产生5642个条目,随后的筛选和选择过程导致将35项研究纳入系统评价.在所采用的各种分割方法中,卷积神经网络,特别是U-net模型,是最常用的。DSC评分对牙齿分割的汇总效果为0.95(95CI0.94至0.96)。此外,七篇论文提供了对细分所需时间的见解,使用人工智能技术时,时间从1.5s到3.4min不等。
    结论:AI模型在从CBCT图像自动分割牙齿方面表现出良好的准确性,同时减少了该过程所需的时间。然而,在未来的研究中,应解决使用不同成像方式对金属伪影和牙齿结构分割的矫正方法。
    结论:AI算法在精确测量牙齿方面具有巨大潜力,正畸治疗计划,牙种植体放置,和其他需要精确牙齿轮廓的牙科手术。这些进步有助于改善牙科实践中的临床结果和患者护理。
    This systematic review and meta-analysis aimed to assess the current performance of artificial intelligence (AI)-based methods for tooth segmentation in three-dimensional cone-beam computed tomography (CBCT) images, with a focus on their accuracy and efficiency compared to those of manual segmentation techniques.
    The data analyzed in this review consisted of a wide range of research studies utilizing AI algorithms for tooth segmentation in CBCT images. Meta-analysis was performed, focusing on the evaluation of the segmentation results using the dice similarity coefficient (DSC).
    PubMed, Embase, Scopus, Web of Science, and IEEE Explore were comprehensively searched to identify relevant studies. The initial search yielded 5642 entries, and subsequent screening and selection processes led to the inclusion of 35 studies in the systematic review. Among the various segmentation methods employed, convolutional neural networks, particularly the U-net model, are the most commonly utilized. The pooled effect of the DSC score for tooth segmentation was 0.95 (95 %CI 0.94 to 0.96). Furthermore, seven papers provided insights into the time required for segmentation, which ranged from 1.5 s to 3.4 min when utilizing AI techniques.
    AI models demonstrated favorable accuracy in automatically segmenting teeth from CBCT images while reducing the time required for the process. Nevertheless, correction methods for metal artifacts and tooth structure segmentation using different imaging modalities should be addressed in future studies.
    AI algorithms have great potential for precise tooth measurements, orthodontic treatment planning, dental implant placement, and other dental procedures that require accurate tooth delineation. These advances have contributed to improved clinical outcomes and patient care in dental practice.
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  • 文章类型: Journal Article
    人工智能(AI)使用计算机以最少的人为干预来模拟智能行为。人工智能的最新进展,尤其是深度学习,在感性操作方面取得了重大进展,使计算机能够更准确地传达和理解复杂的输入。全球,骨折会影响地球上所有年龄段和所有地区的人。不准确诊断和医疗诉讼的最普遍原因之一是在急诊室拍摄的X光照片上忽略了骨折,范围从2%到9%。由于对多种成像方式的骨折检测的需求不断增长,劳动力很快就会承受很大的压力。由于招聘延迟以及相当比例的放射科医生接近退休,放射科医生的匮乏加剧了这种需求的增长。此外,解释诊断图像的过程有时是具有挑战性和乏味的。将骨科无线电诊断与AI集成为这些问题提供了有希望的解决方案。最近深度学习技术的应用有了明显的增长,即卷积神经网络(CNN),在医学成像中。在骨科创伤领域,CNN被证明可以在专业的整形外科医生和放射科医生的熟练程度上进行骨折的识别和分类。CNN可以以超过人类观测的速度分析大量数据。在这次审查中,我们讨论了深度学习方法在裂缝检测和分类中的应用,人工智能与各种成像模式的整合,以及将AI与无线电诊断集成的利弊。
    Artificial intelligence (AI) simulates intelligent behavior using computers with minimum human intervention. Recent advances in AI, especially deep learning, have made significant progress in perceptual operations, enabling computers to convey and comprehend complicated input more accurately. Worldwide, fractures affect people of all ages and in all regions of the planet. One of the most prevalent causes of inaccurate diagnosis and medical lawsuits is overlooked fractures on radiographs taken in the emergency room, which can range from 2% to 9%. The workforce will soon be under a great deal of strain due to the growing demand for fracture detection on multiple imaging modalities. A dearth of radiologists worsens this rise in demand as a result of a delay in hiring and a significant percentage of radiologists close to retirement. Additionally, the process of interpreting diagnostic images can sometimes be challenging and tedious. Integrating orthopedic radio-diagnosis with AI presents a promising solution to these problems. There has recently been a noticeable rise in the application of deep learning techniques, namely convolutional neural networks (CNNs), in medical imaging. In the field of orthopedic trauma, CNNs are being documented to operate at the proficiency of expert orthopedic surgeons and radiologists in the identification and categorization of fractures. CNNs can analyze vast amounts of data at a rate that surpasses that of human observations. In this review, we discuss the use of deep learning methods in fracture detection and classification, the integration of AI with various imaging modalities, and the benefits and disadvantages of integrating AI with radio-diagnostics.
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  • 文章类型: Systematic Review
    在过去的几年里,人工智能的应用及其在多个领域的应用有了巨大的增长,包括医疗保健。法医学和法医牙齿学使用AI具有巨大的发展空间。在严重烧伤的情况下,组织完全丧失,骨结构的完全或部分损失,腐烂的尸体,大规模灾难受害者识别,等。,需要及时识别骨性遗骸。下颌骨,是面部区域最强壮的骨头,高度抵抗过度的机械,化学或物理影响,并已广泛用于许多研究,以确定年龄和性二态。对颌骨进行年龄和性别的射线照相估计更可行,因为它很简单,并且可以同样地应用于死亡和活着的病例,以帮助识别过程。因此,本系统综述的重点是颌面部X线照片中用于年龄和性别确定的各种AI工具。数据是通过在各种搜索引擎中搜索文章获得的,2013年1月至2023年3月出版。QUADAS2用于定性合成,随后对纳入研究的偏倚风险进行Cochrane诊断测试准确性评价分析.研究结果非常乐观。获得的准确性和精密度与人类检查者相当。这些模型,当设计了正确的数据时,可以在医学法律场景和灾难受害者识别中发挥巨大作用。
    In the past few years, there has been an enormous increase in the application of artificial intelligence and its adoption in multiple fields, including healthcare. Forensic medicine and forensic odontology have tremendous scope for development using AI. In cases of severe burns, complete loss of tissue, complete or partial loss of bony structure, decayed bodies, mass disaster victim identification, etc., there is a need for prompt identification of the bony remains. The mandible, is the strongest bone of the facial region, is highly resistant to undue mechanical, chemical or physical impacts and has been widely used in many studies to determine age and sexual dimorphism. Radiographic estimation of the jaw bone for age and sex is more workable since it is simple and can be applied equally to both dead and living cases to aid in the identification process. Hence, this systematic review is focused on various AI tools for age and sex determination in maxillofacial radiographs. The data was obtained through searching for the articles across various search engines, published from January 2013 to March 2023. QUADAS 2 was used for qualitative synthesis, followed by a Cochrane diagnostic test accuracy review for the risk of bias analysis of the included studies. The results of the studies are highly optimistic. The accuracy and precision obtained are comparable to those of a human examiner. These models, when designed with the right kind of data, can be of tremendous use in medico legal scenarios and disaster victim identification.
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  • 文章类型: Journal Article
    最近,由于植物病害对农业生产的不利影响,识别植物病害的重要性已经上升。植物病害一直是农业中的一个大问题,因为它们影响作物生产,对全球粮食安全构成重大威胁。在现代农业领域,有效的植物病害管理对于确保健康的作物产量和可持续的做法至关重要。识别植物病害的传统方法面临许多挑战,对更好和有效的检测方法的需求不能过分强调。先进技术的出现,特别是深度学习和基于内容的过滤技术,如果整合在一起可以改变植物疾病的识别和治疗方式。例如快速正确地识别植物病害和有效的治疗建议,这是可持续粮食生产的关键。在这项工作中,我们试图调查研究的现状,发现知识的差距和局限性,并为研究人员提出了未来的方向,专家和农民可以帮助提供更好的方法来减轻植物病害问题。
    The importance of identifying plant diseases has risen recently due to the adverse effect they have on agricultutal production. Plant diseases have been a big concern in agriculture, as they affect crop production, and constitute a major threat to global food security. In the domain of modern agriculture, effective plant disease management is vital to ensure healthy crop yields and sustainable practices. Traditional means of identifying plant disease are faced with lots of challenges and the need for better and efficient detection methods cannot be overemphazised. The emergence of advanced technologies, particularly deep learning and content-based filtering techniques, if integrated together can changed the way plant diseases are identified and treated. Such as speedy and correct identification of plant diseases and efficient treatment recommendations which are keys for sustainable food production. In this work, We try to investigate the current state of research, identified gaps and limitations in knowledge, and suggests future directions for researchers, experts and farmers that could help to provide better ways of mitigating plant disease problems.
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  • 文章类型: Journal Article
    糖尿病性视网膜病变(DR)是全球视觉障碍的主要原因。它是由于长期糖尿病和血糖水平波动而发生的。它已经成为工作年龄组的人们的一个重要问题,因为它可能导致未来的视力丧失。眼底图像的手动检查是耗时的并且需要大量的努力和专业知识来确定视网膜病变的严重程度。诊断和评估疾病,基于深度学习的技术已经被使用,分析血管,微动脉瘤,分泌物,黄斑,光盘,和出血也用于DR的初始检测和分级。这项研究检查了糖尿病的基本原理,其患病率,并发症,以及使用机器学习(ML)等人工智能方法的治疗策略,深度学习(DL),和联邦学习(FL)。这项研究涵盖了未来的研究,绩效评估,生物标志物,筛选方法,和当前数据集。各种神经网络设计,包括递归神经网络(RNN),生成对抗网络(GAN),以及ML的应用,DL,和FL在眼底图像处理中,例如卷积神经网络(CNN)及其变体,彻底检查。潜在的研究方法,例如开发DL模型和合并异构数据源,也概述了。最后,讨论了本研究面临的挑战和未来的发展方向。
    Diabetic retinopathy (DR) is the leading cause of visual impairment globally. It occurs due to long-term diabetes with fluctuating blood glucose levels. It has become a significant concern for people in the working age group as it can lead to vision loss in the future. Manual examination of fundus images is time-consuming and requires much effort and expertise to determine the severity of the retinopathy. To diagnose and evaluate the disease, deep learning-based technologies have been used, which analyze blood vessels, microaneurysms, exudates, macula, optic discs, and hemorrhages also used for initial detection and grading of DR. This study examines the fundamentals of diabetes, its prevalence, complications, and treatment strategies that use artificial intelligence methods such as machine learning (ML), deep learning (DL), and federated learning (FL). The research covers future studies, performance assessments, biomarkers, screening methods, and current datasets. Various neural network designs, including recurrent neural networks (RNNs), generative adversarial networks (GANs), and applications of ML, DL, and FL in the processing of fundus images, such as convolutional neural networks (CNNs) and their variations, are thoroughly examined. The potential research methods, such as developing DL models and incorporating heterogeneous data sources, are also outlined. Finally, the challenges and future directions of this research are discussed.
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  • 文章类型: Journal Article
    心脏淀粉样变性(CA)是由心肌和心脏结构细胞外沉积的异常淀粉样原纤维引起的浸润性心肌病的一种未确诊形式。其临床表现可以有很高的变异性,诊断CA需要专业知识,并且通常需要彻底的评估;因此,CA的诊断可能具有挑战性,并且经常延迟.人工智能(AI)在不同诊断方式中的应用正在迅速扩展和改变心血管医学。诸如深度学习卷积神经网络(CNN)之类的高级AI方法可以通过识别高风险患者并可能加快CA的诊断来增强CA的诊断过程。在这次审查中,我们总结了人工智能应用于评估CA的不同诊断模式的现状,包括它们的诊断和预后潜力,以及当前的挑战和限制。
    Cardiac amyloidosis (CA) is an underdiagnosed form of infiltrative cardiomyopathy caused by abnormal amyloid fibrils deposited extracellularly in the myocardium and cardiac structures. There can be high variability in its clinical manifestations, and diagnosing CA requires expertise and often thorough evaluation; as such, the diagnosis of CA can be challenging and is often delayed. The application of artificial intelligence (AI) to different diagnostic modalities is rapidly expanding and transforming cardiovascular medicine. Advanced AI methods such as deep-learning convolutional neural networks (CNNs) may enhance the diagnostic process for CA by identifying patients at higher risk and potentially expediting the diagnosis of CA. In this review, we summarize the current state of AI applications to different diagnostic modalities used for the evaluation of CA, including their diagnostic and prognostic potential, and current challenges and limitations.
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  • 文章类型: Journal Article
    目的:卷积神经网络(CNN)近年来彻底改变了医学图像分割。此范围审查旨在对描述使用计算机断层扫描(CT)扫描的CNN进行中耳自动图像分割的文献进行全面审查。
    方法:全面文献检索,与医学图书馆员共同制作,是在Medline上表演的,Embase,Scopus,WebofScience,还有Cochrane,使用医学主题标题术语和关键字。从开始到2023年7月搜索数据库。还筛选了所包含论文的参考文献列表。
    方法:包括10项研究进行分析,其中包含总共866次扫描,用于模型训练/测试。描述了13种不同的体系结构来执行自动分割。使用ResNet,整个听骨链的最佳Dice相似系数(DSC)为0.87。任何结构的最高DSC是使用3D-V-Net的砧木,为0.93。最难分割的结构是骨,使用3D-V-Net的最高DSC为0.84。
    结论:许多架构在使用CNN分割中耳方面表现出良好的性能。为了克服分割骨的一些困难,我们建议开发一种经锥束CT训练的架构,以提供更高的空间分辨率来帮助描绘最小的小骨.
    结论:这对于术前计划具有临床应用价值,诊断,和模拟。
    OBJECTIVE: Convolutional neural networks (CNNs) have revolutionized medical image segmentation in recent years. This scoping review aimed to carry out a comprehensive review of the literature describing automated image segmentation of the middle ear using CNNs from computed tomography (CT) scans.
    METHODS: A comprehensive literature search, generated jointly with a medical librarian, was performed on Medline, Embase, Scopus, Web of Science, and Cochrane, using Medical Subject Heading terms and keywords. Databases were searched from inception to July 2023. Reference lists of included papers were also screened.
    METHODS: Ten studies were included for analysis, which contained a total of 866 scans which were used in model training/testing. Thirteen different architectures were described to perform automated segmentation. The best Dice similarity coefficient (DSC) for the entire ossicular chain was 0.87 using ResNet. The highest DSC for any structure was the incus using 3D-V-Net at 0.93. The most difficult structure to segment was the stapes, with the highest DSC of 0.84 using 3D-V-Net.
    CONCLUSIONS: Numerous architectures have demonstrated good performance in segmenting the middle ear using CNNs. To overcome some of the difficulties in segmenting the stapes, we recommend the development of an architecture trained on cone beam CTs to provide improved spatial resolution to assist with delineating the smallest ossicle.
    CONCLUSIONS: This has clinical applications for preoperative planning, diagnosis, and simulation.
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  • 文章类型: Journal Article
    人工智能(AI)正在不断发展的牙髓学领域中改变诊断方法和治疗方法。当前的评论讨论了AI的最新进展;特别关注卷积和人工神经网络。显然,事实证明,AI模型在分析根管解剖结构方面非常有益,在早期阶段检测根尖病变,并提供准确的工作长度测定。此外,它们似乎可以有效地预测治疗的成功,然后确定各种条件,例如,龋齿,牙髓炎症,垂直根部断裂,非手术根管治疗的第二种意见的表达。此外,AI已经证明了在锥形束计算机断层扫描中以一致的高精度识别标志和病变的卓越能力。虽然人工智能显著提高了牙髓手术的准确性和效率,继续验证AI的可靠性和实用性对于可能广泛整合到日常临床实践非常重要.此外,与患者隐私相关的伦理考虑,数据安全,和潜在的偏见应该仔细检查,以确保人工智能在牙髓中的道德和负责任的实施。
    Artificial intelligence (AI) is transforming the diagnostic methods and treatment approaches in the constantly evolving field of endodontics. The current review discusses the recent advancements in AI; with a specific focus on convolutional and artificial neural networks. Apparently, AI models have proved to be highly beneficial in the analysis of root canal anatomy, detecting periapical lesions in early stages as well as providing accurate working-length determination. Moreover, they seem to be effective in predicting the treatment success next to identifying various conditions e.g., dental caries, pulpal inflammation, vertical root fractures, and expression of second opinions for non-surgical root canal treatments. Furthermore, AI has demonstrated an exceptional ability to recognize landmarks and lesions in cone-beam computed tomography scans with consistently high precision rates. While AI has significantly promoted the accuracy and efficiency of endodontic procedures, it is of high importance to continue validating the reliability and practicality of AI for possible widespread integration into daily clinical practice. Additionally, ethical considerations related to patient privacy, data security, and potential bias should be carefully examined to ensure the ethical and responsible implementation of AI in endodontics.
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  • 文章类型: Journal Article
    计算机视觉的研究小组,图形,机器学习已经将大量的注意力集中在3D对象重建领域,增强,和注册。深度学习是人工智能中用于解决计算机视觉挑战的主要方法。然而,三维数据的深度学习存在明显的障碍,现在正处于起步阶段。特别是针对三维数据的深度学习取得了重大进展,提供一系列解决这些问题的方法。本研究全面考察了深度学习方法的最新进展。我们检查了许多用于3D对象配准任务的基准模型,增强,和重建。我们彻底分析他们的架构,优势,和约束。总之,本报告全面概述了三维深度学习的最新进展,并强调了未来需要解决的尚未解决的研究领域。
    The research groups in computer vision, graphics, and machine learning have dedicated a substantial amount of attention to the areas of 3D object reconstruction, augmentation, and registration. Deep learning is the predominant method used in artificial intelligence for addressing computer vision challenges. However, deep learning on three-dimensional data presents distinct obstacles and is now in its nascent phase. There have been significant advancements in deep learning specifically for three-dimensional data, offering a range of ways to address these issues. This study offers a comprehensive examination of the latest advancements in deep learning methodologies. We examine many benchmark models for the tasks of 3D object registration, augmentation, and reconstruction. We thoroughly analyse their architectures, advantages, and constraints. In summary, this report provides a comprehensive overview of recent advancements in three-dimensional deep learning and highlights unresolved research areas that will need to be addressed in the future.
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  • 文章类型: Journal Article
    应用于心血管疾病(CVD)的人工智能(AI)在科学研究领域取得了巨大的成功。心电图(ECG)是心脏病学检查的基石形式,并且是最广泛使用的诊断工具,因为它们广泛可用,便宜,而且很快。AI在ECG中的应用,特别是使用卷积神经网络(CNN)的深度学习(DL)方法,近年来在心脏病学的许多领域得到了发展。深度学习方法为快速心电图解释提供了有价值的支持,通过对ECG迹线宏观变化的经典分析,证明其诊断能力与CVD诊断专家重叠。通过光电体积描记术,可穿戴设备可以获得用于识别AI诊断的心律失常的单导数ECG。此外,CNNs已经被开发出来,它不能识别宏观的心电图变化,并且可以预测,来自12导联心电图,心房颤动,甚至从窦性心律;左右心室功能;肥厚型心肌病;急性冠状动脉综合征;或主动脉瓣狭窄。应用领域很多,但有很多限制,主要与获取数据的可靠性有关,无法验证黑匣子进程,以及医学法律和道德问题。现代医学的挑战是认识到人工智能的局限性并克服它们。
    Artificial intelligence (AI) applied to cardiovascular disease (CVD) is enjoying great success in the field of scientific research. Electrocardiograms (ECGs) are the cornerstone form of examination in cardiology and are the most widely used diagnostic tool because they are widely available, inexpensive, and fast. Applications of AI to ECGs, especially deep learning (DL) methods using convolutional neural networks (CNNs), have been developed in many fields of cardiology in recent years. Deep learning methods provide valuable support for rapid ECG interpretation, demonstrating a diagnostic capability overlapping with specialists in the diagnosis of CVD by a classical analysis of macroscopic changes in the ECG trace. Through photoplethysmography, wearable devices can obtain single-derivative ECGs for the recognition of AI-diagnosed arrhythmias. In addition, CNNs have been developed that recognize no macroscopic electrocardiographic changes and can predict, from a 12-lead ECG, atrial fibrillation, even from sinus rhythm; left and right ventricular function; hypertrophic cardiomyopathy; acute coronary syndromes; or aortic stenosis. The fields of application are many, but numerous are the limitations, mainly associated with the reliability of the acquired data, an inability to verify black box processes, and medico-legal and ethical problems. The challenge of modern medicine is to recognize the limitations of AI and overcome them.
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