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2013 International Conference on Computer Medical Applications (ICCMA)最新文献

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Motion analysis and eye tracking technologies applied to portable ultrasound systems user interfaces evaluation 运动分析和眼动追踪技术在便携式超声系统用户界面评价中的应用
Pub Date : 2013-04-23 DOI: 10.1109/ICCMA.2013.6506170
G. Andreoni, M. Mazzola, D. Zambarbieri, L. Forzoni, S. D'Onofrio, S. Viotti, G. Santambrogio, G. Baselli
The present work describes the ergonomics and usability preliminary tests regarding the human upper limb kinematics and cognitive evaluation of two diagnostic portable ultrasound scanners. The tests were performed by two sonographers (an expert one and a novice one) on one subject in abdominal and vascular clinical applications. The two portable systems had different user interfaces: one system had a classic Software keys interactive Menu, placed in the lower part of the screen, with toggles and buttons for the activation and adjustment of the functions, then physical qwerty keyboard and control panel. The other system had a touch screen integrated in the control panel with an interactive user interface and reduced number of physical buttons. Comparisons between the two systems considering the two sonographer's use are provided. Motion control and eye tracking scan path results will be presented and discussed for both users on both systems.
本文介绍了两种便携式诊断超声扫描仪在人体上肢运动学和认知评估方面的人体工程学和可用性初步测试。测试由两名超声技师(一名专家和一名新手)对腹部和血管临床应用的一个主题进行。这两款便携式系统有不同的用户界面:一个系统有一个经典的软件键交互菜单,位于屏幕的下方,有用于激活和调整功能的开关和按钮,然后是物理标准键盘和控制面板。另一个系统在控制面板上集成了一个触摸屏,带有交互式用户界面,减少了物理按钮的数量。考虑到两种超声仪的使用,提供了两种系统之间的比较。运动控制和眼动追踪扫描路径结果将在两个系统上为两个用户展示和讨论。
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引用次数: 14
Internal jugular vein blood flow reflux analysis using ultrasound Doppler technologies and phase contrast magnetic resonance imaging 颈内静脉血流反流的超声多普勒技术和相衬磁共振成像分析
Pub Date : 2013-04-23 DOI: 10.1109/ICCMA.2013.6506166
M. M. Laganá, G. Preti, P. Cecconi, L. Forzoni, S. D'Onofrio, G. Baselli, P. Tortoli
The study of the Internal Jugular Vein (IJV) hemodynamics has gained particular attention after the definition of Chronic Cerebrospinal Venous Insufficiency syndrome (CCSVI), and the discovery of highly debated possible links between the venous system and some neurological pathologies (Multiple Sclerosis, Cough Headache, Transient Global Amnesia). One of the most studied hemodynamic signs of the IJV blood flow is the presence and extent of the reflux during normal respiratory conditions or forced breathing maneuvers (Valsalva, Müller;s deep inspiration). The present work is related to the analysis of IJV reflux performed using Magnetic Resonance Imaging (MRI) Phase Contrast (PC) and Ultrasound (US) Doppler techniques. Regarding the US modality, the classic Color Doppler, Pulsed Wave Doppler and the innovative Multigate Quality Doppler Profiles technology will be considered. Comparisons between the results obtained with MRI and US will be discussed to highlight advantages of the proposed MRI and US technologies for IJV reflux presence detection and analysis.
在慢性脑脊髓静脉功能不全综合征(CCSVI)的定义和静脉系统与某些神经系统疾病(多发性硬化症、咳嗽头痛、短暂性全局性遗忘)之间可能存在的高度争议的联系的发现之后,颈内静脉(IJV)血流动力学的研究受到了特别的关注。在正常呼吸状态或强制呼吸时(Valsalva, maller;s深吸气),反流的存在和程度是IJV血流动力学研究最多的标志之一。目前的工作是利用磁共振成像(MRI)相衬(PC)和超声(US)多普勒技术对IJV反流进行分析。关于美国模式,将考虑经典的彩色多普勒,脉冲波多普勒和创新的多门质量多普勒剖面技术。将讨论MRI和US结果的比较,以突出拟议的MRI和US技术在jv反流存在检测和分析方面的优势。
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引用次数: 0
Towards the development of an interface model for information visualization in multiple electronic health records 面向多种电子病历信息可视化界面模型的开发
Pub Date : 2013-04-23 DOI: 10.1109/ICCMA.2013.6506164
Muhammad Sheraz Arshad Malik, S. Sulaiman
Electronic Health Records (EHR) presented through visual analytic systems could be easily interpreted by physicians for better understanding of a patient's medical details. However, there are still a lot of issues with the existing visual analytical applications in terms of the physicians to correctly infer those medical data. The existing applications were found to be more focusing on the colour schemes and differential data representation in the same space but lesser emphasis was given on defragmentation of information to discrete level and, no provision of detailed overview of patient history in the past time frames. These limitations motivate us to formulate a conceptual interface model that could assist designers in better understanding the physicians' needs. As multiple EHR data is usually obtained from various resources, the best approach for such a formulation would be a combination of events based patient history to a sequence based time line in a similar group. This will help in generating the visual information on different data sets in a time frame of particular length from various data resources onto multiple interfaces. The proposed model, having multiple interfaces features within the same interface, is envisaged to be detailed enough in terms of the data presented yet easy to be understood by the physicians.
通过可视化分析系统呈现的电子健康记录(EHR)可以很容易地被医生解释,从而更好地了解患者的医疗细节。然而,现有的可视化分析应用程序在医生正确推断这些医疗数据方面仍然存在很多问题。发现现有的应用程序更侧重于同一空间的配色方案和差异数据表示,但较少强调对离散级别的信息进行碎片整理,并且没有提供过去时间框架中患者病史的详细概述。这些限制促使我们制定一个概念界面模型,可以帮助设计师更好地理解医生的需求。由于多个EHR数据通常是从不同的资源中获得的,因此这种配方的最佳方法是将基于事件的患者病史与基于序列的时间线相结合。这将有助于在特定长度的时间框架内从各种数据资源到多个接口生成不同数据集的视觉信息。所提出的模型在同一界面内具有多个界面特征,设想在呈现的数据方面足够详细,但易于医生理解。
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引用次数: 6
Domain adaptation methods for ECG classification 心电分类的领域自适应方法
Pub Date : 2013-04-23 DOI: 10.1109/ICCMA.2013.6506156
Y. Bazi, N. Alajlan, H. Alhichri, S. Malek
The detection and classification of heart arrhythmias using Electrocardiogram signals (ECG) has been an active area of research in the literature. Usually, to assess the effectiveness of a proposed classification method, training and test data are extracted from the same ECG record. However, in real scenarios test data may come from different records. In this case, the classification results may be less accurate due to the statistical shift between these samples. In order to solve this issue, we investigate, in this paper, the capabilities of two domain adaption methods proposed recently in the literature of machine learning. The first is known as domain transfer SVM, whereas the second is the importance weighted kernel logistic regression method. To assess the effectiveness of both methods, the MIT-BIH arrhythmia database is used in the experiments.
利用心电图信号检测和分类心律失常一直是文献研究的一个活跃领域。通常,为了评估所提出的分类方法的有效性,从相同的心电记录中提取训练和测试数据。然而,在实际场景中,测试数据可能来自不同的记录。在这种情况下,由于这些样本之间的统计偏移,分类结果可能不太准确。为了解决这个问题,我们在本文中研究了最近在机器学习文献中提出的两种领域自适应方法的能力。第一种是域转移支持向量机,第二种是重要性加权核逻辑回归方法。为了评估这两种方法的有效性,实验中使用了MIT-BIH心律失常数据库。
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引用次数: 44
Multi-rate interference-sensitive and conflict-aware multicast in wireless ad hoc networks 无线自组织网络中多速率干扰敏感和冲突感知组播
Pub Date : 2013-04-23 DOI: 10.1109/ICCMA.2013.6506171
Asma Ben Hassouna, H. Koubaa, F. Kamoun
The broadcast nature of the wireless medium makes multicast communication subject to various challenges, especially the unreliability due to the interference [2] and the impact of the transmission data rate choice on the conflicts between communicating users. In fact, a fundamental trade-off exists between communication speed (transmission data rate) and communication range. Actually, the effect of interference is more important when the communication speed decreases, i.e. when communication range increases. In this paper, we propose a multiple rate multicast scheme that is applied to capture the effect of transmission conflicts on the wireless multicast throughput. This work exploits the diversity between users to provide an accurate and efficient method that enables each multicast transmitter, i.e. forwarder or sender, to select the data rates to use to serve its interested neighbours. The choice of the set of data rates, i.e. the choice of multi-rate multicast scheme, should be conflict sensitive in order to guarantee high multicast throughput in multi-rate multi-hop MANET's. We start by introducing two new concepts: The Transmission data Rate based Interference graph (TRIGraph) and Concurrent Multi-rate Multicast Transmitter set (CMMS). Then, we describe the use of these concepts to characterize the interference conflicts caused by multi-rate multicast transmissions. Unlike all the existing conflict graphs, TRIGraph and CMMS are not only used to model interference conflicts, but they are also used to choose the multicast data rates that reduce the effect of such network inconsistency on the system performance.
无线媒体的广播性使组播通信面临各种挑战,特别是由于干扰而产生的不可靠性[2]以及传输数据速率选择对通信用户之间冲突的影响。实际上,在通信速度(传输数据速率)和通信范围之间存在一个基本的权衡。实际上,当通信速度降低,即通信距离增加时,干扰的影响更为重要。本文提出了一种多速率组播方案,用于捕获传输冲突对无线组播吞吐量的影响。这项工作利用用户之间的多样性提供了一种准确有效的方法,使每个多播发送者,即转发者或发送者,选择数据速率来为其感兴趣的邻居服务。在多速率多跳城域网中,为了保证高的组播吞吐量,数据速率集的选择,即多速率组播方案的选择必须是冲突敏感的。本文首先介绍了两个新概念:基于传输数据速率的干扰图(TRIGraph)和并发多速率组播发射机集(CMMS)。然后,我们描述了使用这些概念来描述多速率组播传输引起的干扰冲突。与所有现有的冲突图不同,triggraph和CMMS不仅用于建模干扰冲突,而且还用于选择减少这种网络不一致对系统性能影响的组播数据速率。
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引用次数: 4
Multidimensional data mining for healthcare service portfolio management 用于医疗保健服务组合管理的多维数据挖掘
Pub Date : 2013-04-23 DOI: 10.1109/ICCMA.2013.6506172
J. Chiang, Sheng-Yin Huang
Data Mining is one of the most significant tools for discovering association patterns that are useful in for health services, Customer Relationship Management (CRM) etc. Yet, there are some drawbacks in conventional mining techniques. Since most of them perform the plain mining based on predefined schemata through the data warehouse as a whole, a re-scan must be done whenever new attributes are added. Secondly, an association rule may be true on a certain granularity but fail on a smaller one and vise verse. Last but not least, they are usually designed specifically to find either frequent or infrequent rules. With regard to healthcare service management, this research aims at providing a novel data schema and an algorithm to solve the aforementioned problems. A forest of concept taxonomies is used as the data structure for representing healthcare associations patterns that consist of concepts picked up from various taxonomies. Then, the mining process is formulated as a combination of finding the large itemsets, generating, updating and output the association patterns. Crucial mechanisms in each step will be clarified. At last, this paper presents experimental results regarding efficiency, scalability, information loss, etc. of the proposed approach to prove the advents of the approach.
数据挖掘是发现关联模式的最重要工具之一,这些模式在医疗服务、客户关系管理(CRM)等领域非常有用。然而,传统的采矿技术也有一些缺点。由于它们中的大多数通过整个数据仓库执行基于预定义模式的普通挖掘,因此每当添加新属性时都必须进行重新扫描。其次,关联规则在特定粒度上可能是正确的,但在较小粒度上可能会失败,反之亦然。最后但并非最不重要的是,它们通常专门用于查找频繁或不频繁的规则。在医疗服务管理方面,本研究旨在提供一种新的数据模式和算法来解决上述问题。概念分类法林用作表示医疗保健关联模式的数据结构,这些模式由从各种分类法中获取的概念组成。然后,将挖掘过程表述为查找大型项目集、生成、更新和输出关联模式的组合。将阐明每一步的关键机制。最后给出了该方法的效率、可扩展性、信息丢失等方面的实验结果,证明了该方法的优越性。
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引用次数: 6
Accelerating colonic polyp detection using commodity graphics hardware 加速结肠息肉检测使用商品图形硬件
Pub Date : 2013-04-23 DOI: 10.1109/ICCMA.2013.6506147
David Williams, V. Codreanu, J. Roerdink, Po-Kai Yang, Baoquan Liu, Feng Dong, A. Chiarini
We present a parallel implementation of an algorithm for the detection of colonic polyps from CT data sets. This implementation is designed specifically to take advantage of the computational power available on modern Graphics Processing Units (GPUs), which significantly reduces the execution time to streamline the workflow of clinicians examining the data. We provide details about the changes which were made to the existing algorithm to suit the new target hardware, and perform tests which demonstrate that the results are a very close match to the reference implementation while being computed in a fraction of the time.
我们提出了一种从CT数据集检测结肠息肉的并行实现算法。这种实现是专门为利用现代图形处理单元(gpu)的计算能力而设计的,这大大减少了执行时间,简化了临床医生检查数据的工作流程。我们提供了对现有算法所做的更改的详细信息,以适应新的目标硬件,并执行测试,证明结果与参考实现非常接近,同时在一小部分时间内进行计算。
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引用次数: 7
Eeg-based emotion recognition with brain network using independent components analysis and granger causality 基于独立分量分析和格兰杰因果关系的脑网络情感识别
Pub Date : 2013-04-23 DOI: 10.1109/ICCMA.2013.6506157
Dongwei Chen, Wu Fang, Wang Zhen, Haifang Li, Junjie Chen
With the continuous development of brain imaging technology, it has become a hot area of neuroscience and information technology to research the human emotion changes, cognitive status and psychiatric disorders. In recent years, any smart device can be used as a terminal sensor in the Internet of Things for information interaction. It will be the new research aspect for Brain-Computer Interface(BCI) to regard the human brain (the most intelligent “device”) as a terminal sensor in the Internet of Things and to construct the network based on the human brains (we name it as Internet of Brains). In this paper, a model of wearable affective computing was proposed for discriminating different emotional states and constructing the Internet of Brains, by means of effective connectivity of EEG-based brain network. Firstly, we proposed a rational emotion-induced psychological experiment to collect the EEG data under different emotional states. Then, Independent Component Analysis (ICA) was used to decompose different independent components based on different emotional states; Granger Causality Analysis (GCA) was utilized to detect the interactive dependencies between each independent component in order to construct the causal connectivity brain network (CCBN); Dynamic characteristics, including causal density and causal flow of the CCBN, were extracted based on Graph Theory. Finally, the corresponding law between characteristics of EEG pattern and “inner” emotional state was discovered to establish affective computing model. Furthermore, the model of wearable affective computing was constructed based on above law with the portable EEG acquisition device, and prototype system of wearable affective computing based on Internet of Brains was achieved for BCI.
随着脑成像技术的不断发展,对人类情绪变化、认知状态和精神障碍的研究已成为神经科学和信息技术领域的热点。近年来,任何智能设备都可以作为物联网中的终端传感器进行信息交互。将人脑(最智能的“设备”)作为物联网的终端传感器,构建基于人脑的网络(我们称之为脑联网),将是脑机接口(brain - computer Interface, BCI)新的研究方向。本文提出了一种可穿戴式情感计算模型,利用基于脑电图的大脑网络的有效连接,识别不同的情绪状态,构建大脑互联网。首先,我们提出了一种理性情绪诱导心理实验,收集不同情绪状态下的脑电数据。然后,根据不同的情绪状态,采用独立成分分析(ICA)对不同的独立成分进行分解;运用格兰杰因果分析(Granger Causality Analysis, GCA)检测各独立分量之间的交互依赖关系,构建因果连接脑网络(causal connectivity brain network, CCBN);基于图论提取CCBN的动态特征,包括因果密度和因果流。最后,发现脑电模式特征与“内在”情绪状态的对应规律,建立情感计算模型。在此基础上,利用便携式脑电采集装置构建了可穿戴式情感计算模型,实现了基于脑联网的可穿戴式情感计算原型系统。
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引用次数: 15
A novel computational analysis of computer milled zirconium implant abutment head design under reinforced implant supported overdenture 一种新型的计算机磨锆种植基牙头设计方法
Pub Date : 2013-04-23 DOI: 10.1109/ICCMA.2013.6506144
L. Shinawi, A. Al-Dharrab, T. M. Nassef, Seham B. Tayel
During the past few decades, unalloyed titanium has been extensively used as a material of dental implant-supported restorations but it cause gingival discoloration and unnatural appearance of the surrounding soft tissue. Currently, yttrium oxide partially-stabilized zirconia (Y-TZP) is a ceramic of special interest because of its superior mechanical properties. This study was carried out with four one piece zirconium implants embedded on a standard acrylic resin mandibular edentulous model, the abutment of zirconium implant was classified into two designs and then laboratory test was applied with proposed biting force (sensor (BS) and a bidirectional transmit-receive module. Our study concluded that the use of one piece Zirconium implant with box or parallel shape abutment head in implant supported over-denture without a need of cement, screws or plastics or metal housing for attachment in other types of implant had a superior results and easier maintenance and repair of the prosthesis if any complications occur.
在过去的几十年里,非合金钛被广泛用于种植体修复,但它会导致牙龈变色和周围软组织的不自然外观。目前,氧化钇部分稳定氧化锆(Y-TZP)因其优越的机械性能而成为一种特别受关注的陶瓷。本研究将4个一体式锆种植体嵌入标准丙烯酸树脂下颌无牙模型上,将锆种植体分为两种设计,并采用所提出的咬合力传感器(BS)和双向收发模块进行实验室测试。我们的研究表明,在种植支撑覆盖义齿中,采用一件式锆种植体配盒状或平行状基头,而不需要其他类型种植体的水泥、螺钉或塑料或金属外壳进行附着,其效果更好,并且在出现并发症时更容易维护和修复。
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引用次数: 5
Prospects of telemedicine in developing countries. Case study: Greece 发展中国家远程医疗的前景。案例研究:希腊
Pub Date : 2013-04-23 DOI: 10.1109/ICCMA.2013.6506178
D. Xanthidis
This pilot research examines the motives, the obstacles and the expected outcomes of telemedicine from a medical practitioner's viewpoint. It is a qualitative study based on interviews of 60 practitioners, all from general hospitals of the metropolitan area of Thessaloniki, Central Macedonia, Northern Greece. The study shows that the vast majority of them disagree with the motives provided for the promotion of telemedicine practices in their health units, they differ from the IT experts' opinion of what the obstacles are leading to the low diffusion of telemedicine and show very low expectations of the benefits yield by its application. The main conclusion is that more work is needed to communicate the positive points of medicine especially to the people mostly related and to be involved with this practice.
这项试点研究从医生的角度考察了远程医疗的动机、障碍和预期结果。这是一项基于对60名从业人员访谈的定性研究,这些从业人员全部来自塞萨洛尼基大都市区、马其顿中部和希腊北部的综合医院。研究表明,他们中的绝大多数人不同意在其卫生单位推广远程医疗实践的动机,他们不同意IT专家关于导致远程医疗低传播的障碍的意见,并且对其应用产生的效益表现出非常低的期望。主要的结论是,需要做更多的工作来传达医学的积极方面,特别是向那些主要与医学相关并参与医学实践的人。
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引用次数: 2
期刊
2013 International Conference on Computer Medical Applications (ICCMA)
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