detection

检测
  • 文章类型: Journal Article
    当前的被动病例发现政策并未导致预期的结核病发病率下降。认识到结核病患者所经历的各种疾病途径突出了当前的预防和护理系统没有服务的数量。以及错过了多少传输。
    Current passive case-finding policies have not resulted in the expected decline in tuberculosis incidence. Recognition of the variety of disease pathways experienced by individuals with tuberculosis highlights how many are not served by the current prevention and care system, and how much transmission is missed.
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  • 文章类型: Case Reports
    镰刀菌,作为一种机会病原体,可以感染免疫抑制的个体,中性粒细胞减少症,造血干细胞移植(HSCT),或其他高风险因素,导致侵入性或局部感染。特别是在同种异体HSCT后的患者中,镰刀菌更容易引起侵袭性或播散性感染。这项研究的重点是接受HSCT治疗严重再生障碍性贫血的儿科患者。虽然最初的血培养是阴性的,移植后1,3-β-D-葡聚糖试验(G试验)检测到异常.为了确定病原体,同时对血液样本进行宏基因组下一代测序(mNGS)和血液培养.令人惊讶的是,基质辅助激光解吸/电离飞行时间质谱(MALDI-TOFMS)和mNGS的结果略有不同,通过mNGS识别出坏死性血细胞坏死性,而基于培养的MALDI-TOFMS显示镰刀菌。为了澄清结果,进行Sanger测序以进一步检测,结果与MALDI-TOFMS的结果一致。由于Sanger测序的准确性高于mNGS,诊断改为侵袭性镰刀菌感染.随着技术的进步,近年来开发了各种入侵真菌的检测方法,比如MNGS,具有高灵敏度。虽然传统方法可能很耗时,由于它们的高特异性,它们是重要的。因此,在临床实践中,必须以互补的方式利用传统和新的检测方法来增强侵袭性真菌感染的诊断。
    Fusarium solani, as an opportunistic pathogen, can infect individuals with immunosuppression, neutropenia, hematopoietic stem cell transplantation (HSCT), or other high-risk factors, leading to invasive or localized infections. Particularly in patients following allogeneic HSCT, Fusarium solani is more likely to cause invasive or disseminated infections. This study focuses on a pediatric patient who underwent HSCT for severe aplastic anemia. Although initial blood cultures were negative, an abnormality was detected in the 1,3-β-D-glucan test (G test) post-transplantation. To determine the causative agent, blood samples were subjected to metagenomic next-generation sequencing (mNGS) and blood cultures simultaneously. Surprisingly, the results of matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) and mNGS differed slightly, with mNGS identifying Nectria haematonectria, while MALDI-TOF MS based on culture showed Fusarium solani. To clarify the results, Sanger sequencing was performed for further detection, and the results were consistent with those of MALDI-TOF MS. Since the accuracy of Sanger sequencing is higher than that of mNGS, the diagnosis was revised to invasive Fusarium solani infection. With advancements in technology, various detection methods for invasive fungi have been developed in recent years, such as mNGS, which has high sensitivity. While traditional methods may be time-consuming, they are important due to their high specificity. Therefore, in clinical practice, it is essential to utilize both traditional and novel detection methods in a complementary manner to enhance the diagnosis of invasive fungal infections.
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  • 文章类型: Journal Article
    目的:与精神病相关的诊断代码越来越多地用作基于电子健康记录(EHR)的算法的案例定义,以预测和检测精神病。然而,关于精神病相关诊断代码有效性的数据有限.我们评估了精神病的国际疾病分类(ICD)代码的阳性预测值(PPV)。
    方法:在3个卫生系统中使用EHR,将包含原发性精神病性障碍和患有精神病的情绪障碍的ICD代码分为5个高阶组。使用完整的EHR对1133条记录进行采样以进行图表审查。在多个治疗设置中计算PPV(给定ICD精神病代码的图表确认精神病的概率)。
    结果:所有诊断组和医院系统的PPV均超过70%:MassGeneralBrigham0.72[95%CI0.68-0.77],波士顿儿童医院0.80[0.75-0.84],波士顿医疗中心0.83[0.79-0.86]。分裂情感障碍PPV在各个部位始终最高(0.80-0.92),而伴有精神病的重度抑郁症是最大的变化(0.57-0.79)。为了确定第一个记录的代码是否捕获了首发精神病(FEP),我们排除了先前有诊断或治疗精神病的图表证据的病例,产量大幅降低PPVs(0.08-0.62)。
    结论:我们发现,第一个有记录的精神病诊断代码准确地捕获了精神病的真实发作,但FEP指标较差。这些数据对开发旨在预测或检测未诊断精神病的风险预测模型中使用的病例定义具有重要意义。
    OBJECTIVE: Psychosis-associated diagnostic codes are increasingly being utilized as case definitions for electronic health record (EHR)-based algorithms to predict and detect psychosis. However, data on the validity of psychosis-related diagnostic codes is limited. We evaluated the positive predictive value (PPV) of International Classification of Diseases (ICD) codes for psychosis.
    METHODS: Using EHRs at 3 health systems, ICD codes comprising primary psychotic disorders and mood disorders with psychosis were grouped into 5 higher-order groups. 1133 records were sampled for chart review using the full EHR. PPVs (the probability of chart-confirmed psychosis given ICD psychosis codes) were calculated across multiple treatment settings.
    RESULTS: PPVs across all diagnostic groups and hospital systems exceeded 70%: Mass General Brigham 0.72 [95% CI 0.68-0.77], Boston Children\'s Hospital 0.80 [0.75-0.84], and Boston Medical Center 0.83 [0.79-0.86]. Schizoaffective disorder PPVs were consistently the highest across sites (0.80-0.92) and major depressive disorder with psychosis were the most variable (0.57-0.79). To determine if the first documented code captured first-episode psychosis (FEP), we excluded cases with prior chart evidence of a diagnosis of or treatment for a psychotic illness, yielding substantially lower PPVs (0.08-0.62).
    CONCLUSIONS: We found that the first documented psychosis diagnostic code accurately captured true episodes of psychosis but was a poor index of FEP. These data have important implications for the case definitions used in the development of risk prediction models designed to predict or detect undiagnosed psychosis.
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  • 文章类型: Case Reports
    背景:数字表型在临床研究中的应用已广泛增加;然而,很少有研究对自杀风险检测实施被动评估方法。一种新形式的数字表型有很大的潜力,称为屏幕组学,它通过屏幕截图捕获智能手机活动。
    目的:本文集中于对2名过去1个月主动自杀意念的参与者进行全面的病例回顾,详细说明他们的被动(即,通过屏幕组学截图捕获获得)和主动(即,通过生态瞬时评估[EMA]获得)的风险概况,最终导致自杀危机和随后的精神病住院。通过这种分析,我们揭示了住院前风险过程的时间尺度,以及介绍了屏幕组学在自杀研究领域的新应用。
    方法:为了强调屏幕组学在理解自杀风险方面的潜在益处,该分析集中于从住院前的屏幕截图-文本捕获中收集的特定类型的数据,以及自我报告的EMA反应。经过全面的基线评估,参与者完成了密集的时间采样期。在此期间,每5秒收集一次截图,而一个人的手机在使用35天,和EMA数据每天收集6次,共28天。在我们的分析中,我们专注于以下方面:与自杀有关的内容(通过屏幕截图和EMA获得),与自杀风险相关的风险因素在理论和实证上(通过截图和EMA获得),和社交内容(通过截图获得)。
    结果:我们的分析揭示了几个关键发现。首先,自杀危机期间EMA依从性显著下降,两名参与者在住院前几天完成的EMA较少。这与导致住院的电话使用量总体增加形成鲜明对比,特别是社会使用的增加。Screenomics还在自杀危机的每个实例中捕获了突出的诱发因素,这些因素通过自我报告无法很好地发现,特别是身体上的痛苦和孤独。
    结论:我们的初步发现强调了被动收集数据在理解和预测自杀危机方面的潜力。每个参与者的大量屏幕截图提供了他们日常数字互动的细粒度视图,揭示了不能单独通过自我报告捕捉到的新风险。当与EMA评估相结合时,屏幕组学提供了一个更全面的观点,一个人的心理过程在时间导致自杀危机。
    BACKGROUND: Digital phenotyping has seen a broad increase in application across clinical research; however, little research has implemented passive assessment approaches for suicide risk detection. There is a significant potential for a novel form of digital phenotyping, termed screenomics, which captures smartphone activity via screenshots.
    OBJECTIVE: This paper focuses on a comprehensive case review of 2 participants who reported past 1-month active suicidal ideation, detailing their passive (ie, obtained via screenomics screenshot capture) and active (ie, obtained via ecological momentary assessment [EMA]) risk profiles that culminated in suicidal crises and subsequent psychiatric hospitalizations. Through this analysis, we shed light on the timescale of risk processes as they unfold before hospitalization, as well as introduce the novel application of screenomics within the field of suicide research.
    METHODS: To underscore the potential benefits of screenomics in comprehending suicide risk, the analysis concentrates on a specific type of data gleaned from screenshots-text-captured prior to hospitalization, alongside self-reported EMA responses. Following a comprehensive baseline assessment, participants completed an intensive time sampling period. During this period, screenshots were collected every 5 seconds while one\'s phone was in use for 35 days, and EMA data were collected 6 times a day for 28 days. In our analysis, we focus on the following: suicide-related content (obtained via screenshots and EMA), risk factors theoretically and empirically relevant to suicide risk (obtained via screenshots and EMA), and social content (obtained via screenshots).
    RESULTS: Our analysis revealed several key findings. First, there was a notable decrease in EMA compliance during suicidal crises, with both participants completing fewer EMAs in the days prior to hospitalization. This contrasted with an overall increase in phone usage leading up to hospitalization, which was particularly marked by heightened social use. Screenomics also captured prominent precipitating factors in each instance of suicidal crisis that were not well detected via self-report, specifically physical pain and loneliness.
    CONCLUSIONS: Our preliminary findings underscore the potential of passively collected data in understanding and predicting suicidal crises. The vast number of screenshots from each participant offers a granular look into their daily digital interactions, shedding light on novel risks not captured via self-report alone. When combined with EMA assessments, screenomics provides a more comprehensive view of an individual\'s psychological processes in the time leading up to a suicidal crisis.
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  • 文章类型: Preprint
    早期发现精神病对于改善预后至关重要。使用电子健康记录(EHR)数据预测或检测精神病的算法取决于所用病例定义的有效性,通常基于诊断代码。关于精神病相关诊断代码有效性的数据有限。我们评估了精神病的国际疾病分类(ICD)代码的阳性预测值(PPV)。
    在三个卫生系统中使用EHR,将包含原发性精神病和有精神病的情绪障碍的ICD代码分为五个高阶组。使用完整的EHR对1,133条记录进行了采样,以进行图表审查。在多个治疗设置中计算PPV(给定ICD精神病代码的图表确认精神病的概率)。
    所有诊断组和医院系统的PPV均超过70%:马萨诸塞州布里格姆将军0.72[95%CI0.68-0.77],波士顿儿童医院0.80[0.75-0.84],波士顿医疗中心0.83[0.79-0.86]。分裂情感障碍PPV在各个部位始终最高(0.80-0.92),而伴有精神病的重度抑郁症是最大的变化(0.57-0.79)。为了确定第一个记录的代码是否捕获了首发精神病(FEP),我们排除了先前有诊断或治疗精神病的图表证据的病例,产量大幅降低PPVs(0.08-0.62)。
    我们发现,第一个记录在案的精神病诊断代码准确地捕捉到了精神病的真实发作,但FEP指数较差。这些数据对于旨在预测或检测未诊断精神病的风险预测模型的开发具有重要意义。
    UNASSIGNED: Early detection of psychosis is critical for improving outcomes. Algorithms to predict or detect psychosis using electronic health record (EHR) data depend on the validity of the case definitions used, typically based on diagnostic codes. Data on the validity of psychosis-related diagnostic codes is limited. We evaluated the positive predictive value (PPV) of International Classification of Diseases (ICD) codes for psychosis.
    UNASSIGNED: Using EHRs at three health systems, ICD codes comprising primary psychotic disorders and mood disorders with psychosis were grouped into five higher-order groups. 1,133 records were sampled for chart review using the full EHR. PPVs (the probability of chart-confirmed psychosis given ICD psychosis codes) were calculated across multiple treatment settings.
    UNASSIGNED: PPVs across all diagnostic groups and hospital systems exceeded 70%: Massachusetts General Brigham 0.72 [95% CI 0.68-0.77], Boston Children\'s Hospital 0.80 [0.75-0.84], and Boston Medical Center 0.83 [0.79-0.86]. Schizoaffective disorder PPVs were consistently the highest across sites (0.80-0.92) and major depressive disorder with psychosis were the most variable (0.57-0.79). To determine if the first documented code captured first-episode psychosis (FEP), we excluded cases with prior chart evidence of a diagnosis of or treatment for a psychotic illness, yielding substantially lower PPVs (0.08-0.62).
    UNASSIGNED: We found that the first documented psychosis diagnostic code accurately captured true episodes of psychosis but was a poor index of FEP. These data have important implications for the development of risk prediction models designed to predict or detect undiagnosed psychosis.
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  • 文章类型: Journal Article
    这项研究的目的是研究利用分子印迹聚咔唑层检测高毒性苦味酸(PA)的潜力,并提供有关其性能的信息。量子化学计算表明,PA和咔唑之间发生强烈的相互作用(键能约为31kJ/mol),符合有效分子印迹的理论要求。传感器的性能,然而,被发现是非常有限的,对于沉积在Pt和玻碳(GC)电极上的层,观察到的聚咔唑(PCz)层的压印因子值为1.77和0.95,分别。此外,分子印迹聚合物(MIP)层表现出比未修饰的Pt或GC电极更差的性能,确定最低检测限(LOD)值(LOD值为0.09mM和0.26mM,分别,对于裸Pt和MIPPCz/Pt,以及裸GC和MIPPCz/GC的0.11mM和0.57mM的值)。MIP层还显示出有限的选择性和对干扰剂的敏感性。基于共轭聚合物的共同性质,对这种性能的原因提出了最初的假设。
    The aims of this study were to investigate the potential of utilising molecularly imprinted polycarbazole layers to detect highly toxic picric acid (PA) and to provide information about their performance. Quantum chemical calculations showed that strong interactions occur between PA and carbazole (bond energy of approximately 31 kJ/mol), consistent with the theoretical requirements for effective molecular imprinting. The performance of the sensors, however, was found to be highly limited, with the observed imprinting factor values for polycarbazole (PCz) layers being 1.77 and 0.95 for layers deposited on Pt and glassy carbon (GC) electrodes, respectively. Moreover, the molecularly imprinted polymer (MIP) layers showed worse performance than unmodified Pt or GC electrodes, for which the lowest limit of detection (LOD) values were determined (LOD values of 0.09 mM and 0.26 mM, respectively, for bare Pt and MIP PCz/Pt, as well as values of 0.11 mM and 0.57 mM for bare GC and MIP PCz/GC). The MIP layers also showed limited selectivity and susceptibility to interfering agents. An initial hypothesis on the reasons for such performance was postulated based on the common properties of conjugated polymers.
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  • 文章类型: Case Reports
    该病例探讨了胰腺神经内分泌肿瘤(PNET)与抑郁症之间的潜在时间关系。该患者有抑郁症的慢性症状,直到医生怀疑她诊断为胰腺癌的一年之内才得到正式诊断。切除活检证实胰腺有1级神经内分泌肿瘤(NET),术后精神病会诊证实抑郁症持续升高.本报告提供了有关抑郁症诊断时机与PNET诊断之间关系的正在进行的研究问题的说明性示例。胰腺癌患者的抑郁症与诊断前的关系是一个值得进一步研究的观察结果,因为抑郁症可能是胰腺癌的一个有价值的早期预警信号。
    This case probes the potential temporal relationship between pancreatic neuroendocrine tumor (PNET) and depression. This patient has chronic symptoms of depression with no formal diagnosis until within a year of doctors suspecting her diagnosis of pancreatic cancer. An excisional biopsy confirmed a grade 1 neuroendocrine tumor (NET) in the pancreas, and postoperative psychiatric consultation confirmed continued elevated depression. This report presents an illustrative example of the ongoing research questions surrounding the relationship between the timing of a depression diagnosis and a PNET diagnosis. The depression-before-diagnosis relationship in pancreatic cancer patients is an observation that warrants further studies as depression could be a valuable early warning sign of pancreatic cancer.
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  • 文章类型: Journal Article
    本文提出了一种折衷模型,用于检查与检测欺骗有关的认知负荷,这种欺骗得益于声学维度作为认知法医语言学的练习。使用的语料库由BreonnaTaylor案的法律供词笔录组成,一名26岁的非裔美国女工在路易斯维尔被警察枪杀,Ky.,在2020年3月对她的公寓进行镇压期间。数据集包括参与枪击事件的人员的笔录和记录,但给出了不清楚的指控,以及因肆意失职而被指控共同过失的人。作为所提出模型的应用,基于视频访谈和反应时间(RT)对数据进行了分析。研究结果表明,所选择的情节以及对它们的分析方式表明,修改后的ADCM以及声学维度在构建和产生谎言的过程中提供了清晰的认知负荷管理画面。
    The present paper proposes an eclectic model for examining the cognitive load involved in detecting deception that benefits from the acoustic dimension as an exercise in cognitive forensic linguistics. The corpus used is composed of the legal confession transcripts of the Breonna Taylor\'s Case, a 26-year-old African-American woman worker who was shot dead by police officers in Louisville, Ky., in March 2020 during a crackdown on her apartment. The dataset comprises transcripts and recordings of the persons involved in the shooting event but have given unclear charges, and those accused of contributory negligence due to wanton misfiring. The data is analyzed based on the video interviews and reaction times (RT) as an application of the model proposed. The findings reveal that the episodes chosen and how they are analyzed exhibit that the modified ADCM along with the acoustic dimension provide a clear picture of cognitive load management in the course of constructing and producing lies.
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  • 文章类型: Journal Article
    使用深度学习从现成的立体相机传感器数据中准确检测害虫(幼虫)的早期发育阶段对农民来说有几个好处。从简单的机器人配置到早期中和这个不那么敏捷但更灾难性的阶段。机器视觉技术已从批量喷洒到精确剂量,再到直接在受感染的作物上摩擦。然而,这些解决方案主要集中在成年害虫和侵染后阶段。这项研究建议使用安装在机器人上的正面红-绿-蓝(RGB)立体相机来使用深度学习识别害虫幼虫。相机将数据输入到我们在八个ImageNet预训练模型上进行实验的深度学习算法中。昆虫分类器和检测器的组合在我们的定制害虫幼虫数据集上复制了周边和中央凹视线视觉,分别。这可以在机器人的平稳操作和捕获的害虫的定位精度之间进行权衡,因为它最初出现在有远见的部分。因此,近视部分利用我们更快的基于区域的卷积神经网络的害虫检测器来精确定位。使用CoppeliaSim和MATLAB/SIMULINK以及深度学习工具箱对所采用的机器人动力学进行仿真证明了所提出的系统的出色可行性。我们的深度学习分类器和检测器表现出99%和0.84的准确率和平均精度,分别。
    Accurately detecting early developmental stages of insect pests (larvae) from off-the-shelf stereo camera sensor data using deep learning holds several benefits for farmers, from simple robot configuration to early neutralization of this less agile but more disastrous stage. Machine vision technology has advanced from bulk spraying to precise dosage to directly rubbing on the infected crops. However, these solutions primarily focus on adult pests and post-infestation stages. This study suggested using a front-pointing red-green-blue (RGB) stereo camera mounted on a robot to identify pest larvae using deep learning. The camera feeds data into our deep-learning algorithms experimented on eight ImageNet pre-trained models. The combination of the insect classifier and the detector replicates the peripheral and foveal line-of-sight vision on our custom pest larvae dataset, respectively. This enables a trade-off between the robot\'s smooth operation and localization precision in the pest captured, as it first appeared in the farsighted section. Consequently, the nearsighted part utilizes our faster region-based convolutional neural network-based pest detector to localize precisely. Simulating the employed robot dynamics using CoppeliaSim and MATLAB/SIMULINK with the deep-learning toolbox demonstrated the excellent feasibility of the proposed system. Our deep-learning classifier and detector exhibited 99% and 0.84 accuracy and a mean average precision, respectively.
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  • 文章类型: Journal Article
    背景:COVID-19大流行严重影响了许多低收入和中等收入国家(LMICs),比如秘鲁,压倒他们的卫生系统。SARS-CoV-2是导致COVID-19的病毒,已经提出了快速抗原检测自检,安全,负担得起的,和易于执行的方法,以改善在资源有限的人群中SARS-CoV-2的早期发现和监测,这些人群在获得医疗保健方面存在差距。
    目的:本研究旨在探讨决策者对SARS-CoV-2自我测试的价值观和态度。
    方法:2021年,我们在秘鲁的2个地区(城市利马和农村ValledelMantaro)进行了定性研究。目的抽样用于确定民间社会团体(RSC)的代表,卫生保健工作者(HCWs),和潜在的实施者(PI)充当信息提供者,其声音将为公众围绕自我测试的态度提供代理。
    结果:总计,30名举报人参加了个人,半结构化访谈(SSIs)和29名举报人参加了5次焦点小组讨论(FGD)。自我测试被认为是增加秘鲁农村和城市公众接受测试的一种方法。结果显示,公众更喜欢基于唾液的自我测试,更喜欢在社区药房使用。此外,对于秘鲁的每个人口亚组,有关如何进行自检的信息应该是清楚的。测试应该是高质量和低成本的。健康知情的沟通策略也必须伴随着任何自我测试的引入。
    结论:在秘鲁,决策者认为公众愿意接受SARS-CoV-2自检,使用安全,容易获得,和负担得起的。关于自检功能和说明的充分信息,以及使用后获得咨询和护理,必须通过秘鲁卫生部提供。
    BACKGROUND: The COVID-19 pandemic heavily impacted many low- and middle-income countries (LMICs), such as Peru, overwhelming their health systems. Rapid antigen detection self-tests for SARS-CoV-2, the virus that causes COVID-19, have been proposed as a portable, safe, affordable, and easy-to-perform approach to improve early detection and surveillance of SARS-CoV-2 in resource-constrained populations where there are gaps in access to health care.
    OBJECTIVE: This study aims to explore decision makers\' values and attitudes around SARS-CoV-2 self-testing.
    METHODS: In 2021, we conducted a qualitative study in 2 areas of Peru (urban Lima and rural Valle del Mantaro). Purposive sampling was used to identify representatives of civil society groups (RSCs), health care workers (HCWs), and potential implementers (PIs) to act as informants whose voices would provide a proxy for the public\'s attitudes around self-testing.
    RESULTS: In total, 30 informants participated in individual, semistructured interviews (SSIs) and 29 informants participated in 5 focus group discussions (FGDs). Self-tests were considered to represent an approach to increase access to testing that both the rural and urban public in Peru would accept. Results showed that the public would prefer saliva-based self-tests and would prefer to access them in their community pharmacies. In addition, information about how to perform a self-test should be clear for each population subgroup in Peru. The tests should be of high quality and low cost. Health-informed communication strategies must also accompany any introduction of self-testing.
    CONCLUSIONS: In Peru, decision makers consider that the public would be willing to accept SARS-CoV-2 self-tests if they are accurate, safe to use, easily available, and affordable. Adequate information about the self-tests\' features and instructions, as well as about postuse access to counseling and care, must be made available through the Ministry of Health in Peru.
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