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A context-management framework for telemedicine: an emergency medicine case study 远程医疗情境管理框架:急诊医学案例研究
Rita H. Wouhaybi, M. Yarvis, Philip Muse, Chieh-Yih Wan, Sangita Sharma, Sai Prasad, Lenitra M. Durham, R. Sahni, R. Norton, Merlin Curry, H. Jimison, R. Harper, R. Lowe
Patient care can be intense and stressful, especially in emergency care situations. Emergency care has two parts, field care by a paramedic and in-hospital care. Paramedics often consult with physicians before the patient reaches the hospital. To do this effectively, they must convey the patient's condition rapidly and effectively. Upon hospital arrival they must also transfer as much patient data as possible to ensure continuation of care. In this paper, we present a context-management framework for telemedicine that is designed to capture sensor data for transfer to a remote location. We further describe an application developed on top of the framework for emergency medicine. We examine design considerations for the application based on collaboration with medical personnel. Finally, we present technical results obtained from use of the technology in simulated emergency scenarios.
病人护理可能是紧张和有压力的,特别是在紧急护理情况下。急救有两个部分,护理人员的现场护理和住院护理。护理人员经常在病人到达医院之前咨询医生。为了有效地做到这一点,他们必须迅速有效地传达病人的病情。到达医院后,他们还必须尽可能多地转移病人资料,以确保继续护理。在本文中,我们提出了一个用于远程医疗的上下文管理框架,该框架旨在捕获传感器数据以传输到远程位置。我们进一步描述了在急诊医学框架之上开发的应用程序。我们在与医务人员协作的基础上检查应用程序的设计考虑因素。最后,我们介绍了在模拟紧急情况下使用该技术获得的技术成果。
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引用次数: 8
Breath analysis with laser sensors on an Android platform 在Android平台上使用激光传感器进行呼吸分析
Siddharth Gupta, P. Breen, Duo Wu, A. Sabharwal
We have seen the rise of smartphones and highly capable mobile computing platforms over a relatively short period of time. These devices are quickly becoming ubiquitous and already enable access to basic sensors to augment the excellent communication and computing capabilities. However, advanced sensor interaction has been limited. Readily available environment and health sensors cannot effectively leverage the smartphone yet. One such health application that holds much promise is breath analysis through laser absorption spectroscopy (LAS). Breath analysis can help augment existing diagnostic techniques with early detection. Technology advances have led to the development of portable LAS sensors that can monitor the user's health and the environment. Our demonstration will show such a portable laser sensor along with an event-driven data collection architecture to enable future personalized health applications.
我们在相对较短的时间内见证了智能手机和高性能移动计算平台的崛起。这些设备正迅速变得无处不在,并且已经能够访问基本传感器,以增强出色的通信和计算能力。然而,先进的传感器相互作用受到限制。现成的环境和健康传感器还不能有效地利用智能手机。其中一个很有希望的健康应用是通过激光吸收光谱(LAS)进行呼吸分析。呼吸分析可以帮助增强现有的早期检测诊断技术。技术进步导致便携式LAS传感器的发展,可以监测用户的健康和环境。我们的演示将展示这种便携式激光传感器以及事件驱动的数据收集架构,以实现未来的个性化健康应用。
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引用次数: 2
Blood oxygen estimation from compressively sensed photoplethysmograph 用压感光容积描记仪估计血氧
P. Baheti, H. Garudadri, Somdeb Majumdar
In this work, we consider low power, wearable pulse oximeter sensors for ambulatory, remote vital signs monitoring applications. It is extremely important for such sensors to maintain clinical accuracy and yet provide power savings to enable non-intrusive, long lasting sensors. Our contributions in this work include sub-Nyquist, random sampling of evanescent red and infra red (IR) photoplethysmograph (PPG) signals in real time under the Compressed Sensing (CS) paradigm. We describe the real time platform and demonstrate that the SpO2 accuracy is not compromised due to aliasing of ambient light artifacts, even when average number of measurements is much below that of Nyquist rate. We briefly discuss the various modules contributing to overall power consumption of a wireless pulse oximeter sensor and show that 10x reductions in LED power and radio power are possible, without sacrificing the SpO2 accuracy.
在这项工作中,我们考虑将低功耗、可穿戴式脉搏血氧计传感器用于动态、远程生命体征监测应用。对于这些传感器来说,保持临床准确性,并提供节能以实现非侵入性,持久耐用的传感器是非常重要的。我们在这项工作中的贡献包括在压缩感知(CS)范式下对瞬时红色和红外(IR)光体积脉搏图(PPG)信号进行亚奈奎斯特随机采样。我们描述了实时平台,并证明即使平均测量次数远低于奈奎斯特速率,SpO2精度也不会因环境光伪像的混叠而受到损害。我们简要讨论了影响无线脉搏血氧计传感器总功耗的各种模块,并表明在不牺牲SpO2精度的情况下,可以将LED功率和无线电功率降低10倍。
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引用次数: 4
The Berkeley Tricorder: wireless health monitoring 伯克利三录仪:无线健康监测
Reza Naima, J. Canny
The advancement of precision micropower amplifiers, microcontrollers, and MEMs devices have allowed for a paradigm shift from traditionally large and costly health monitoring equipment only found in hospitals or care centers to smaller, wireless, low powered portable devices that can provide continuous monitoring for a number of applications. Along these lines, we have developed a small wireless health monitoring device, named The Berkeley Tricorder, capable of monitoring a wide range of health-related signals, and have vetted it in a number of human trials. We will present a number of different real-time visualization tools that have been developed, and discuss some relevant applications for the Tricorder as a platform. Real time wireless telemetry from the device will be demonstrated.
精密微功率放大器、微控制器和MEMs设备的进步,使得传统的大型、昂贵的健康监测设备从医院或护理中心转向更小、无线、低功耗的便携式设备,这些设备可以为许多应用提供连续监测。沿着这些思路,我们开发了一种小型无线健康监测设备,名为伯克利三录仪,能够监测各种与健康有关的信号,并在许多人体试验中对其进行了审查。我们将介绍一些已经开发的不同的实时可视化工具,并讨论三录仪作为平台的一些相关应用。将演示该设备的实时无线遥测技术。
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引用次数: 1
A platform for implantable medical device validation: demo abstract 植入式医疗器械验证平台:演示摘要
Zhihao Jiang, M. Pajic, Allison T. Connolly, S. Dixit, R. Mangharam
We present the design of an integrated modeling platform to investigate efficient methodologies for certifying medical device software. The outcome of this research has the potential to expedite medical device software certification for safer operation. Our specific focus in this study is on our ongoing research in artificial pacemaker software. Designing bug-free medical device software is difficult, especially in complex implantable devices that may be used in unanticipated contexts. In the 20-year period from 1985 to 2005, the US Food and Drug Administration's (FDA) Maude database records almost 30,000 deaths and almost 600,000 injuries from device failures [1]. There is currently no formal methodology or open experimental platform to validate and verify the correct operation of medical device software. To this effect, a real-time Virtual Heart Model (VHM) has been developed to model the electrophysiological operation of the functioning (i.e. during normal sinus rhythm) and malfunctioning (i.e. during arrhythmia) heart. We present a methodology to extract timing properties of the heart to construct a timed-automata model. The platform exposes functional and formal interfaces for validation and verification of implantable cardiac devices. We demonstrate the VHM is capable of generating clinically-relevant response to intrinsic (i.e. premature stimuli) and external (i.e. artificial pacemaker) signals for a variety of common arrhythmias. By connecting the VHM with a pacemaker model, we are able to pace and synchronize the heart during the onset of irregular heart rhythms. The VHM has been implemented on a hardware platform for closed-loop experimentation with existing and virtual medical devices.
我们提出了一个集成建模平台的设计,以研究认证医疗设备软件的有效方法。这项研究的结果有可能加快医疗设备软件认证的安全性操作。我们在这项研究中的具体重点是我们正在进行的人工心脏起搏器软件的研究。设计无缺陷的医疗设备软件是困难的,特别是在复杂的植入式设备中,可能会在意想不到的情况下使用。在1985年至2005年的20年间,美国食品和药物管理局(FDA)的Maude数据库记录了近3万例设备故障导致的死亡和近60万例伤害[1]。目前还没有正式的方法或开放的实验平台来验证和验证医疗器械软件的正确操作。为此,一个实时虚拟心脏模型(VHM)已经被开发出来,以模拟功能(即正常窦性心律)和故障(即心律失常)心脏的电生理操作。我们提出了一种提取心脏定时特性的方法来构建一个定时自动机模型。该平台为植入式心脏装置的验证和验证提供了功能和形式接口。我们证明了VHM能够对各种常见心律失常的内在(即过早刺激)和外部(即人工起搏器)信号产生临床相关的反应。通过将VHM与起搏器模型连接,我们能够在不规则心律发作时对心脏进行起搏和同步。VHM已在硬件平台上实现,用于现有和虚拟医疗设备的闭环实验。
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引用次数: 5
Comparative study of segmentation of periodic motion data for mobile gait analysis 周期运动数据分割在移动步态分析中的比较研究
Aris Valtazanos, D. Arvind, S. Ramamoorthy
Two approaches are presented and compared for segmenting motion data from on-body Orient wireless motion capture system for mobile gait analysis. The first is a basic, model-based algorithm which operates directly on the joint angles computed by the Orient sensor devices. The second is a model-free, Latent Space algorithm, which first aggregates all the sensor data, and then embeds them in a low-dimensional manifold to perform segmentation. The two approaches are compared for segmenting four different styles of walking, and then applied in a hospital-based clinical study for analysing the motion of elderly patients recovering from a fall.
提出了两种用于移动步态分析的身体定向无线运动捕捉系统运动数据分割方法,并进行了比较。首先是一种基于模型的基本算法,该算法直接对由Orient传感器设备计算的关节角度进行操作。第二种是无模型潜空间算法,它首先聚合所有传感器数据,然后将它们嵌入到低维流形中进行分割。将这两种方法进行比较,以区分四种不同的行走方式,然后将其应用于一项基于医院的临床研究,以分析跌倒后康复的老年患者的运动。
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引用次数: 19
A multimodal sensing system for detection of traumatic brain injury 一种用于外伤性脑损伤检测的多模态传感系统
P. Ganapathy, J. Yadegar, Niranajan Kamath, Shantanu H. Joshi, C. Caluser
We propose to develop a portable, handheld, noninvasive solution for accurate screening and real-time monitoring of traumatic brain injury (TBI) in ambulatory/emergency response scenarios. A layered sensing concept that unifies modalities such as a) ultrasound (US) (B-mode, Doppler flow), b) tonometry and c) pulse oximeter to predict TBI, its severity and mode of recommendations for emergency medical service (EMS) personnel is currently investigated. Specifically, we aim to determine novel 3D morphometric parameters of optic nerve sheath (ONS) that can predict elevated intracranial pressure (EICP) from US data. These parameters when combined with intraocular pressure (IOP), blood oxygen saturation (SaO2) and Doppler flow readings of the carotid artery can improve the overall classification accuracy. In addition, we have also developed a preliminary decision-support system (DSS) to provide an automated analysis of subject's brain health status and thereby, recommend further screening, etc. In the demo, we would show the chain of processing starting from capture of our desired signals from a volunteer, pre-processing (reformatting, de-noising) of US data, post-processing of features extracted from the 3D US model and finally, the classification output of the DSS.
我们建议开发一种便携式,手持式,无创的解决方案,用于准确筛查和实时监测门诊/紧急情况下的创伤性脑损伤(TBI)。目前正在研究一种分层传感概念,该概念统一了A)超声(b模式,多普勒血流),b)血压计和c)脉搏血氧计等模式来预测TBI,其严重程度和紧急医疗服务(EMS)人员的建议模式。具体来说,我们的目标是确定视神经鞘(ONS)的新型3D形态测量参数,该参数可以从美国数据中预测颅内压(EICP)升高。这些参数与眼内压(IOP)、血氧饱和度(SaO2)和颈动脉多普勒血流读数相结合可提高整体分类精度。此外,我们还开发了一个初步决策支持系统(DSS),以提供受试者大脑健康状况的自动分析,从而建议进一步筛查等。在演示中,我们将展示从志愿者捕获所需信号开始的处理链,对美国数据进行预处理(重新格式化,去噪),对从3D美国模型中提取的特征进行后处理,最后是DSS的分类输出。
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引用次数: 0
AndWellness: an open mobile system for activity and experience sampling AndWellness:一个用于活动和体验采样的开放式移动系统
John Hicks, N. Ramanathan, Donnie H. Kim, Mohamad Monibi, J. Selsky, Mark H. Hansen, D. Estrin
Advances in mobile phone technology have allowed phones to become a convenient platform for real-time assessment of a participants health and behavior. AndWellness, a personal data collection system, uses mobile phones to collect and analyze data from both active, triggered user experience samples and passive logging of onboard environmental sensors. The system includes an application that runs on Android based mobile phones, server software that manages deployments and acts as a central repository for data, and a dashboard front end for both participants and researchers to visualize incoming data in real-time. Our system has gone through testing by researchers in preparation for deployment with participants, and we describe an initial qualitative study plus several planned future studies to demonstrate how our system can be used to better understand a user's health related habits and observations.
移动电话技术的进步使手机成为实时评估参与者健康和行为的方便平台。AndWellness是一个个人数据收集系统,使用手机收集和分析主动、触发的用户体验样本和机载环境传感器的被动记录数据。该系统包括一个运行在Android手机上的应用程序,管理部署并充当数据中央存储库的服务器软件,以及一个用于参与者和研究人员实时可视化传入数据的仪表板前端。我们的系统已经经过了研究人员的测试,准备与参与者一起部署,我们描述了一个初步的定性研究和几个计划的未来研究,以展示我们的系统如何能够更好地用于了解用户的健康相关习惯和观察。
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引用次数: 132
Towards power optimized kalman filter for gait assessment using wearable sensors 基于可穿戴传感器的功率优化卡尔曼滤波步态评估
Prem Santosh Udaya Shankar, Nikhil Raveendranathan, N. Gans, R. Jafari
Systems with wearable and wireless motion sensors have been receiving significant attention in the past few years specifically for the applications of human movement monitoring. One important concern in the design of wearable and wireless motion sensors, also referred to as Body Sensor Networks, is the form factor. A smaller form factor makes the device easily portable and wearable, hence improving users' acceptability. The form factor is usually determined by the size of the battery, which in turn is dependent on the power required by the system and the sensors present in it. Most human movement monitoring applications require inertial sensors like accelerometers and gyroscopes. However, the power consumption of a gyroscope is an order of magnitude greater than an accelerometer. In this paper, we examine power savings obtained by turning off the gyroscope for short periods while using Kalman filters to predict the state. The Kalman filter uses previous readings from both accelerometer and gyroscopes for its calculations. Our results show that with this approach, the system can achieve a reasonable reduction in power consumption with an acceptable loss of accuracy.
在过去几年中,具有可穿戴和无线运动传感器的系统已经受到了极大的关注,特别是用于人体运动监测的应用。在可穿戴和无线运动传感器(也称为身体传感器网络)的设计中,一个重要的问题是外形因素。更小的外形使设备易于携带和穿戴,从而提高了用户的接受度。外形因素通常由电池的大小决定,而电池的大小又取决于系统和其中的传感器所需的功率。大多数人体运动监测应用需要惯性传感器,如加速度计和陀螺仪。然而,陀螺仪的功耗比加速度计大一个数量级。在本文中,我们研究了通过短时间关闭陀螺仪而使用卡尔曼滤波器预测状态所获得的功率节省。卡尔曼滤波器使用加速度计和陀螺仪的先前读数进行计算。我们的结果表明,采用这种方法,系统可以在可接受的精度损失的情况下实现合理的功耗降低。
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引用次数: 4
Demo of the Generic Smart Alarm: a framework for the design, analysis, and implementation of smart alarms and other clinical decision support systems 通用智能警报演示:智能警报和其他临床决策支持系统的设计、分析和实施框架
Andrew L. King, Alex Roederer, Sanjian Chen, N. Stevens, Philip Asare, O. Sokolsky, Insup Lee, M. Mullen-Fortino, Soojin Park
Cheap and energy efficient wireless technologies have the potential to usher in an era of pervasive and ubiquitous patient monitoring. Some applications which could take advantage of pervasive monitoring are smart alarms and clinical decision support (CDS) systems. We demonstrate the Generic Smart Alarm (GSA), a framework for the design, analysis, and implementation of smart alarm or CDS systems. We will show how the a GSA can be used to adapt a smart alarm for specific patient populations as well as how a smart alarm can be tailored to the performance characteristics of a specific networking platform.
廉价和节能的无线技术有可能迎来一个无处不在的病人监控时代。可以利用普适监测的一些应用是智能警报和临床决策支持(CDS)系统。我们演示了通用智能报警(GSA),一个用于设计、分析和实现智能报警或CDS系统的框架。我们将展示如何使用GSA为特定患者群体调整智能警报,以及如何根据特定网络平台的性能特征定制智能警报。
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引用次数: 3
期刊
Proceedings Wireless Health ... [electronic resource]. Wireless Health (Conference)
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