artificial intelligence-AI

人工智能 - AI
  • 文章类型: Journal Article
    伯基特淋巴瘤(BL)是一种高度可治疗的癌症。然而,BL的延迟诊断导致非洲BL流行地区的高死亡率.该地区缺乏足够的病理学家是延迟诊断的主要原因。本文所描述的工作是一项概念验证研究,旨在开发一种有针对性的,开放式AI工具,用于筛查可疑BL病例的组织病理学切片。从总共90名BL患者获得载玻片。使用70个扁桃体切除术样品作为对照。我们对6个预训练模型进行了微调,并评估了所有6个模型在不同配置中的性能。基于集合的共识方法确保了平衡和稳健的分类。该工具将新颖的特征应用于BL诊断,包括使用多个图像放大倍数,因此,可以根据远程诊所提供的显微镜/扫描仪使用不同的图像放大倍数,对多个模型进行综合评分,并利用具有弱标记和图像增强的MIL,允许使用相对较低的样本量来在推理集上实现良好的性能。开放访问模型允许从任何具有互联网连接的地方免费访问AI工具。这项工作的最终目的是使病理服务变得容易获得,在BL流行地区的偏远诊所中高效及时。新一代低成本的载玻片扫描仪/显微镜有望使载玻片图像立即可用于AI工具进行筛查,从而加速本地或在线病理学家的诊断。
    Burkitt Lymphoma (BL) is a highly treatable cancer. However, delayed diagnosis of BL contributes to high mortality in BL endemic regions of Africa. Lack of enough pathologists in the region is a major reason for delayed diagnosis. The work described in this paper is a proof-of-concept study to develop a targeted, open access AI tool for screening of histopathology slides in suspected BL cases. Slides were obtained from a total of 90 BL patients. 70 Tonsillectomy samples were used as controls. We fine-tuned 6 pre-trained models and evaluated the performance of all 6 models across different configurations. An ensemble-based consensus approach ensured a balanced and robust classification. The tool applies novel features to BL diagnosis including use of multiple image magnifications, thus enabling use of different magnifications of images based on the microscope/scanner available in remote clinics, composite scoring of multiple models and utilizing MIL with weak labeling and image augmentation, enabling use of relatively low sample size to achieve good performance on the inference set. The open access model allows free access to the AI tool from anywhere with an internet connection. The ultimate aim of this work is making pathology services accessible, efficient and timely in remote clinics in regions where BL is endemic. New generation of low-cost slide scanners/microscopes is expected to make slide images available immediately for the AI tool for screening and thus accelerate diagnosis by pathologists available locally or online.
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  • 文章类型: Journal Article
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  • 文章类型: Journal Article
    在人工通用智能(AGI)的黎明,ChatGPT等大型语言模型的出现显示了通过改善患者护理来彻底改变医疗保健的希望,扩大医疗准入,优化临床流程。然而,他们融入医疗保健系统需要仔细考虑潜在风险,比如不准确的医疗建议,侵犯患者隐私,伪造文件或图像的创建,在医学教育中过度依赖AGI,以及偏见的延续。实施适当的监督和监管以应对这些风险至关重要,确保将AGI技术安全有效地纳入医疗保健系统。通过承认和减轻这些挑战,可以利用AGI来加强病人护理,医学知识,和医疗保健流程,最终使整个社会受益。
    At the dawn of of Artificial General Intelligence (AGI), the emergence of large language models such as ChatGPT show promise in revolutionizing healthcare by improving patient care, expanding medical access, and optimizing clinical processes. However, their integration into healthcare systems requires careful consideration of potential risks, such as inaccurate medical advice, patient privacy violations, the creation of falsified documents or images, overreliance on AGI in medical education, and the perpetuation of biases. It is crucial to implement proper oversight and regulation to address these risks, ensuring the safe and effective incorporation of AGI technologies into healthcare systems. By acknowledging and mitigating these challenges, AGI can be harnessed to enhance patient care, medical knowledge, and healthcare processes, ultimately benefiting society as a whole.
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  • 文章类型: Editorial
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  • 文章类型: Editorial
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  • 文章类型: Journal Article
    简介:为了测量重症监护病房(ICU)的睡眠,完整的多导睡眠监测是不切实际的,而活动监测和主观评估严重混淆。然而,睡眠是一种高度网络化的状态,并反映在许多信号中。这里,我们探索使用人工智能方法在ICU中使用心率变异性(HRV)和呼吸信号估计常规睡眠指数的可行性方法:我们使用深度学习模型对接受外科和内科ICU的危重成年患者的HRV(通过心电图)和呼吸努力(通过可穿戴皮带)信号进行睡眠阶段。以及年龄和性别匹配的睡眠实验室患者结果:我们研究了ICU中的102名成年患者,和220名临床睡眠实验室的病人。我们发现,基于HRV和呼吸的模型预测的睡眠阶段在60%的ICU数据和81%的睡眠实验室数据中显示出一致性。在ICU,深度NREM(N2+N3)占总睡眠持续时间的比例降低(ICU39%,睡眠实验室57%,p<0.01),REM比例呈重尾分布,并且每小时睡眠的觉醒转变次数(中位数3.6)与睡眠呼吸紊乱的睡眠实验室患者(中位数3.9)相当.ICU的睡眠也是支离破碎的,38%的睡眠发生在白天。最后,与睡眠实验室患者相比,ICU患者的呼吸模式更快,变化更少。结论:心血管和呼吸网络编码睡眠状态信息,which,结合人工智能方法,可用于测量ICU中的睡眠状态。
    Introduction: To measure sleep in the intensive care unit (ICU), full polysomnography is impractical, while activity monitoring and subjective assessments are severely confounded. However, sleep is an intensely networked state, and reflected in numerous signals. Here, we explore the feasibility of estimating conventional sleep indices in the ICU with heart rate variability (HRV) and respiration signals using artificial intelligence methods Methods: We used deep learning models to stage sleep with HRV (through electrocardiogram) and respiratory effort (through a wearable belt) signals in critically ill adult patients admitted to surgical and medical ICUs, and in age and sex-matched sleep laboratory patients Results: We studied 102 adult patients in the ICU across multiple days and nights, and 220 patients in a clinical sleep laboratory. We found that sleep stages predicted by HRV- and breathing-based models showed agreement in 60% of the ICU data and in 81% of the sleep laboratory data. In the ICU, deep NREM (N2 + N3) proportion of total sleep duration was reduced (ICU 39%, sleep laboratory 57%, p < 0.01), REM proportion showed heavy-tailed distribution, and the number of wake transitions per hour of sleep (median 3.6) was comparable to sleep laboratory patients with sleep-disordered breathing (median 3.9). Sleep in the ICU was also fragmented, with 38% of sleep occurring during daytime hours. Finally, patients in the ICU showed faster and less variable breathing patterns compared to sleep laboratory patients Conclusion: The cardiovascular and respiratory networks encode sleep state information, which, together with artificial intelligence methods, can be utilized to measure sleep state in the ICU.
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  • 文章类型: Journal Article
    背景:新药应用的急剧增加增加了撰写诸如药物指南之类的技术文件的开销。自然语言处理有助于减轻这种负担。目标:根据与处方药标签信息相关的文本生成用药指南。材料和方法:我们从DailyMed网站收集了官方药品标签信息。我们专注于包含药物指导部分的药物标签,以训练和测试我们的模型。为了构建我们的训练数据集,我们使用三个系列的对齐技术将文档中的“源”文本与药物指南中的类似“目标”文本对齐:全局,manual,和启发式对齐。生成的源-目标对作为输入提供给指针生成器网络,抽象的文本摘要模型。结果:全局比对产生的ROUGE分数最低,定性结果相对较差,因为运行模型经常导致模式崩溃。手动对齐还导致模式崩溃,尽管ROUGE分数高于全球一致性。在启发式对齐方法家族中,我们比较了不同的方法,发现基于BM25的比对产生了明显更好的总结(比其他技术至少高出6.8个ROUGE点).就ROUGE和定性评分而言,这种对齐方式超过了全球和手动对齐方式。结论:这项研究的结果表明,为抽象摘要模型生成输入的启发式方法增加了ROUGE分数,与自动生成生物医学文本时的全局或手动方法相比。这种方法有可能显着减少医学写作和相关学科中的体力劳动负担。
    Background: A steep increase in new drug applications has increased the overhead of writing technical documents such as medication guides. Natural language processing can contribute to reducing this burden. Objective: To generate medication guides from texts that relate to prescription drug labeling information. Materials and Methods: We collected official drug label information from the DailyMed website. We focused on drug labels containing medication guide sections to train and test our model. To construct our training dataset, we aligned \"source\" text from the document with similar \"target\" text from the medication guide using three families of alignment techniques: global, manual, and heuristic alignment. The resulting source-target pairs were provided as input to a Pointer Generator Network, an abstractive text summarization model. Results: Global alignment produced the lowest ROUGE scores and relatively poor qualitative results, as running the model frequently resulted in mode collapse. Manual alignment also resulted in mode collapse, albeit higher ROUGE scores than global alignment. Within the family of heuristic alignment approaches, we compared different methods and found BM25-based alignments to produce significantly better summaries (at least 6.8 ROUGE points above the other techniques). This alignment surpassed both the global and manual alignments in terms of ROUGE and qualitative scoring. Conclusion: The results of this study indicate that a heuristic approach to generating inputs for an abstractive summarization model increased ROUGE scores, compared to a global or manual approach when automatically generating biomedical text. Such methods hold the potential to significantly reduce the manual labor burden in medical writing and related disciplines.
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  • 文章类型: Editorial
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