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  • 文章类型: Journal Article
    近年来,人工智能(AI)在医学影像中的作用日益突出,FDA批准的大多数AI申请在2023年用于成像和放射学。应对临床挑战的AI模型开发激增,突显了准备高质量医学成像数据的必要性。正确的数据准备至关重要,因为它可以促进创建标准化和可重复的AI模型,同时最大程度地减少偏见。数据策展将原始数据转换为有价值的、有组织的,和可靠的资源,是机器学习和分析项目成功的基本过程。考虑到不同阶段的数据管理工具过多,了解特定研究领域内最相关的工具至关重要。在目前的工作中,我们为数据策展的不同步骤提出了描述性大纲,同时提供了从成像信息学协会(SIIM)成员中应用的调查中收集的工具的汇编。该集合有可能增强研究人员的决策过程,因为他们为其特定任务选择了最合适的工具。
    In recent years, the role of Artificial Intelligence (AI) in medical imaging has become increasingly prominent, with the majority of AI applications approved by the FDA being in imaging and radiology in 2023. The surge in AI model development to tackle clinical challenges underscores the necessity for preparing high-quality medical imaging data. Proper data preparation is crucial as it fosters the creation of standardized and reproducible AI models while minimizing biases. Data curation transforms raw data into a valuable, organized, and dependable resource and is a fundamental process to the success of machine learning and analytical projects. Considering the plethora of available tools for data curation in different stages, it is crucial to stay informed about the most relevant tools within specific research areas. In the current work, we propose a descriptive outline for different steps of data curation while we furnish compilations of tools collected from a survey applied among members of the Society of Imaging Informatics (SIIM) for each of these stages. This collection has the potential to enhance the decision-making process for researchers as they select the most appropriate tool for their specific tasks.
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  • 文章类型: Journal Article
    开发开放的计算管道以加速发现新兴疾病的治疗方法,可以在更短的时间内找到新的解决方案。共识分子对接是这些方法之一,其主要目的是在虚拟筛查活动中增加对真实活动的检测。这里我们介绍dockECR,一个开放的共识对接和排序协议,该协议实施指数共识排序方法来对分子候选物进行优先级排序。该协议使用四个开源分子对接程序:AutoDockVina,Smina,LeDock和rDock,对分子进行排序。此外,我们引入了一种基于平均RMSD的评分策略,该平均RMSD是通过比较每个程序的最佳姿势而获得的,以有关预测姿势的信息来补充共识排名.该方案是使用15种具有已知活性物质和诱饵的相关蛋白质靶标进行基准测试的,并使用SARS-CoV-2病毒的主要蛋白酶应用。对于应用程序,蛋白酶的不同晶体结构,和从分子动力学模拟获得的框架用于对接来自先前共结晶片段的79个分子的文库。使用dockECR获得的排名用于优先考虑8名候选人,根据与蛋白酶关键残基产生的相互作用进行评估。该方案可以在涉及蛋白质作为分子靶标的任何虚拟筛选活动中实施。dockECR代码可在以下网站公开获得:https://github.com/rochoa85/dockECR。
    The development of open computational pipelines to accelerate the discovery of treatments for emerging diseases allows finding novel solutions in shorter periods of time. Consensus molecular docking is one of these approaches, and its main purpose is to increase the detection of real actives within virtual screening campaigns. Here we present dockECR, an open consensus docking and ranking protocol that implements the exponential consensus ranking method to prioritize molecular candidates. The protocol uses four open source molecular docking programs: AutoDock Vina, Smina, LeDock and rDock, to rank the molecules. In addition, we introduce a scoring strategy based on the average RMSD obtained from comparing the best poses from each single program to complement the consensus ranking with information about the predicted poses. The protocol was benchmarked using 15 relevant protein targets with known actives and decoys, and applied using the main protease of the SARS-CoV-2 virus. For the application, different crystal structures of the protease, and frames obtained from molecular dynamics simulations were used to dock a library of 79 molecules derived from previously co-crystallized fragments. The ranking obtained with dockECR was used to prioritize eight candidates, which were evaluated in terms of the interactions generated with key residues from the protease. The protocol can be implemented in any virtual screening campaign involving proteins as molecular targets. The dockECR code is publicly available at: https://github.com/rochoa85/dockECR.
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  • 文章类型: Journal Article
    It is a growing concern that outcomes of neuroimaging studies often cannot be replicated. To counteract this, the magnetic resonance (MR) neuroimaging community has promoted acquisition standards and created data sharing platforms, based on a consensus on how to organize and share MR neuroimaging data. Here, we take a similar approach to positron emission tomography (PET) data. To facilitate comparison of findings across studies, we first recommend publication standards for tracer characteristics, image acquisition, image preprocessing, and outcome estimation for PET neuroimaging data. The co-authors of this paper, representing more than 25 PET centers worldwide, voted to classify information as mandatory, recommended, or optional. Second, we describe a framework to facilitate data archiving and data sharing within and across centers. Because of the high cost of PET neuroimaging studies, sample sizes tend to be small and relatively few sites worldwide have the required multidisciplinary expertise to properly conduct and analyze PET studies. Data sharing will make it easier to combine datasets from different centers to achieve larger sample sizes and stronger statistical power to test hypotheses. The combining of datasets from different centers may be enhanced by adoption of a common set of best practices in data acquisition and analysis.
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