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18th IEEE Symposium on Computer-Based Medical Systems (CBMS'05)最新文献

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Analysis of the pancreato-biliary system from MRCP MRCP对胰胆系统的分析
18th IEEE Symposium on Computer-Based Medical Systems (CBMS'05) Pub Date : 2005-06-23 DOI: 10.1109/CBMS.2005.31
K. Robinson, P. Whelan
{"title":"Analysis of the pancreato-biliary system from MRCP","authors":"K. Robinson, P. Whelan","doi":"10.1109/CBMS.2005.31","DOIUrl":"https://doi.org/10.1109/CBMS.2005.31","url":null,"abstract":"We present a preprocessing and segmentation scheme designed to address the particular difficulties encountered in the analysis of magnetic resonance cholangiopancreatography (MRCP) data, as a precursor to the application of computer assisted diagnosis (CAD) techniques. MRCP generates noisy, low resolution, non-isometric data which often exhibits significant greylevel inhomogeneities. This combination of characteristics results in data volumes in which reliable segmentation and analysis are difficult to achieve. In this paper we describe a data processing approach developed to overcome these difficulties and allow for the effective application of automated CAD procedures in the analysis of the biliary tree and pancreatic duct in MRCP examinations.","PeriodicalId":119367,"journal":{"name":"18th IEEE Symposium on Computer-Based Medical Systems (CBMS'05)","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122093198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Local dimensionality reduction within natural clusters for medical data analysis 用于医疗数据分析的自然聚类局部降维
18th IEEE Symposium on Computer-Based Medical Systems (CBMS'05) Pub Date : 2005-06-23 DOI: 10.1109/CBMS.2005.71
Mykola Pechenizkiy, A. Tsymbal, S. Puuronen
{"title":"Local dimensionality reduction within natural clusters for medical data analysis","authors":"Mykola Pechenizkiy, A. Tsymbal, S. Puuronen","doi":"10.1109/CBMS.2005.71","DOIUrl":"https://doi.org/10.1109/CBMS.2005.71","url":null,"abstract":"Inductive learning systems have been successfully applied in a number of medical domains. Nevertheless, the effective use of these systems requires data preprocessing before applying a learning algorithm. Especially it is important for multidimensional heterogeneous data, presented by a large number of features of different types. Dimensionality reduction is one commonly applied approach. The goal of this paper is to study the impact of natural clustering on dimensionality reduction for classification. We compare several data mining strategies that apply dimensionality reduction by means of feature extraction or feature selection for subsequent classification. We show experimentally on microbiological data that local dimensionality reduction within natural clusters results in a better feature space for classification in comparison with the global search in terms of generalization accuracy.","PeriodicalId":119367,"journal":{"name":"18th IEEE Symposium on Computer-Based Medical Systems (CBMS'05)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117169684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 14
A method for the ECG inverse problem in the frequency domain 心电信号频域逆问题的一种求解方法
18th IEEE Symposium on Computer-Based Medical Systems (CBMS'05) Pub Date : 2005-06-23 DOI: 10.1109/CBMS.2005.12
César Navarro, Colin Turner, O. Escalona, C. Owens, J. Anderson, A. Adgey
{"title":"A method for the ECG inverse problem in the frequency domain","authors":"César Navarro, Colin Turner, O. Escalona, C. Owens, J. Anderson, A. Adgey","doi":"10.1109/CBMS.2005.12","DOIUrl":"https://doi.org/10.1109/CBMS.2005.12","url":null,"abstract":"The Inverse ECG problem is ill-conditioned and its solution requires a relatively high computing effort. Additional constraints are required in order to obtain a stable solution. A method is proposed in which the solution of the inverse ECG problem is approached in the frequency domain, taking advantage of the assumption that propagation delays may be ignored and the quasi-periodicity of ECG. In this method usual Tikhonov zero-order constraints are applied to the amplitudes of the signals for a selected frequency domain. This method ensures faster solutions that are spatially and temporally well behaved. Calculation of epicardial electrograms is compared to a basic method.","PeriodicalId":119367,"journal":{"name":"18th IEEE Symposium on Computer-Based Medical Systems (CBMS'05)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122691814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
The efficacy of the gas discharge visualisation technique as a measure of physical and mental health 气体释放可视化技术作为衡量身心健康的效果
18th IEEE Symposium on Computer-Based Medical Systems (CBMS'05) Pub Date : 2005-06-23 DOI: 10.1109/CBMS.2005.98
P. Dobson, E. O'Keeffe
{"title":"The efficacy of the gas discharge visualisation technique as a measure of physical and mental health","authors":"P. Dobson, E. O'Keeffe","doi":"10.1109/CBMS.2005.98","DOIUrl":"https://doi.org/10.1109/CBMS.2005.98","url":null,"abstract":"On the basis of our research, the GDV does not seem to possess a specific medical diagnostic capability, however, the GDV does display very significant change with interventions designed to reduce stress; therefore, the GDV technique can potentially be used in tracking the effectiveness of physical and mental fitness programmes. We also concluded that the level of GDV-entropy is an important indicator of mental health and can help to identify which individuals are more likely to suffer from stress and its consequences.","PeriodicalId":119367,"journal":{"name":"18th IEEE Symposium on Computer-Based Medical Systems (CBMS'05)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127816081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Guided interactive diagnostic systems 引导交互式诊断系统
18th IEEE Symposium on Computer-Based Medical Systems (CBMS'05) Pub Date : 2005-06-23 DOI: 10.1109/CBMS.2005.62
G. M. Sacco
{"title":"Guided interactive diagnostic systems","authors":"G. M. Sacco","doi":"10.1109/CBMS.2005.62","DOIUrl":"https://doi.org/10.1109/CBMS.2005.62","url":null,"abstract":"A guided interactive approach to computer-aided medical diagnosis is presented. This approach is based on dynamic taxonomies, a knowledge management model that allows the guided interactive exploration of complex information bases. The problem of the diagnosis of pathologies is recasted as a problem of exploring and thinning out candidate pathologies on the basis of symptoms and other observable features.","PeriodicalId":119367,"journal":{"name":"18th IEEE Symposium on Computer-Based Medical Systems (CBMS'05)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128399293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 14
A grid-based stochastic simulation of unitary and membrane Ca/sup 2+/ currents in spherical cells
18th IEEE Symposium on Computer-Based Medical Systems (CBMS'05) Pub Date : 2005-06-23 DOI: 10.1109/CBMS.2005.10
V. González-Vélez, H. González-Vélez
{"title":"A grid-based stochastic simulation of unitary and membrane Ca/sup 2+/ currents in spherical cells","authors":"V. González-Vélez, H. González-Vélez","doi":"10.1109/CBMS.2005.10","DOIUrl":"https://doi.org/10.1109/CBMS.2005.10","url":null,"abstract":"We present a stochastic simulation of L-type Ca/sup 2+/ current assuming thousands of calcium channels on the membrane of a spherical cell. We propose a three-state Markov model to simulate the individual contribution of each channel. Rather than using a statistical approximation, we actually consider each individual channel transitions between states and evaluate the unitary channel current. We compare this aggregated unitary contributions with simulated whole cell currents, both in response to a depolarising voltage pulse. On the computational side, we have employed a parameter-sweep, component based approach. Being embarrassingly parallel by design, we have parallelised it in a naive manner. We argue its possible extension using algorithmic skeletons. The results presented account for hours of processing time on a dedicated grid.","PeriodicalId":119367,"journal":{"name":"18th IEEE Symposium on Computer-Based Medical Systems (CBMS'05)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129238920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Experiences on a large scale grid deployment with a computationally intensive biomedical application 具有计算密集型生物医学应用的大规模网格部署经验
18th IEEE Symposium on Computer-Based Medical Systems (CBMS'05) Pub Date : 2005-06-23 DOI: 10.1109/CBMS.2005.52
J. M. Alonso, V. Hernández, Germán Moltó
{"title":"Experiences on a large scale grid deployment with a computationally intensive biomedical application","authors":"J. M. Alonso, V. Hernández, Germán Moltó","doi":"10.1109/CBMS.2005.52","DOIUrl":"https://doi.org/10.1109/CBMS.2005.52","url":null,"abstract":"With the recent advent of Grid Computing technologies, resource-starved applications can greatly benefit from the power that the Grid aims to deliver. In this paper, we focus on the application of Grid Computing to a biomedical computationally intensive application that simulates the electrical activity on cardiac tissues. A user level tool, called GMarte, was developed to simplify the usage of Grid facilities for the execution of scientific applications on distributed deployments. A cardiac case study has been executed, via GMarte, on the largest distributed Grid deployment available in Europe (the EGEE testbed) in order to assess the benefits of Grid Computing. The usage of a Grid infrastructure has dramatically reduced the time required to execute the case study, thus increasing research productivity.","PeriodicalId":119367,"journal":{"name":"18th IEEE Symposium on Computer-Based Medical Systems (CBMS'05)","volume":"220 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124347140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
A public access defibrillation trial in urban and rural communities in Northern Ireland: developing the roster model 在北爱尔兰城市和农村社区进行的公众获取除颤试验:开发花名册模型
18th IEEE Symposium on Computer-Based Medical Systems (CBMS'05) Pub Date : 2005-06-23 DOI: 10.1109/CBMS.2005.18
K. Cairns, A. Marshall, F. Kee
{"title":"A public access defibrillation trial in urban and rural communities in Northern Ireland: developing the roster model","authors":"K. Cairns, A. Marshall, F. Kee","doi":"10.1109/CBMS.2005.18","DOIUrl":"https://doi.org/10.1109/CBMS.2005.18","url":null,"abstract":"This paper introduces a special computer-based roster scheme developed to allocate and manage volunteers working as part of a public access defibrillation trial. The roster scheme, developed for the urban region, is rooted on population statistics and demographics for that area and utilizes geographical mapping software and spatial modelling techniques to subdivide the geographical location into appropriate paging zones. The central location for zones was constrained to be within a reasonable travelling time for each volunteer. By estimating sudden cardiac arrest occurrences using a Poisson process, the model, together with road network information, selects a roster which minimizes volunteer response time.","PeriodicalId":119367,"journal":{"name":"18th IEEE Symposium on Computer-Based Medical Systems (CBMS'05)","volume":"454 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123364413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Vessel segmentation and analysis in laboratory skin transplant micro-angiograms 实验室皮肤移植微血管造影中的血管分割与分析
18th IEEE Symposium on Computer-Based Medical Systems (CBMS'05) Pub Date : 2005-06-23 DOI: 10.1109/CBMS.2005.104
A. Condurache, T. Aach, S. Grzybowski, H. Machens
{"title":"Vessel segmentation and analysis in laboratory skin transplant micro-angiograms","authors":"A. Condurache, T. Aach, S. Grzybowski, H. Machens","doi":"10.1109/CBMS.2005.104","DOIUrl":"https://doi.org/10.1109/CBMS.2005.104","url":null,"abstract":"The success of skin transplantations depends on the adequate revascularization of the transplanted dermal matrix. To induce vessel growth or angiogenesis, pharmacological substances may be applied to the dermal matrix. The effectiveness of different such substances has been evaluated in laboratory experiments. For this purpose, the surface and length of newly grown vessels have to be measured in micro-angiograms (x-ray images of the blood vessels recorded after the injection of a radiopaque substance) of tissue transplanted on the back of laboratory animals. To this end we describe in this contribution a vessel analysis environment central to which is a vessel segmentation tool for surface quantification in fasciocutaneous skin transplant micro-angiograms.","PeriodicalId":119367,"journal":{"name":"18th IEEE Symposium on Computer-Based Medical Systems (CBMS'05)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122651432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
Analysis and monitoring of the human energy state with gas discharge visualization technique 利用气体放电可视化技术对人体能量状态进行分析和监测
18th IEEE Symposium on Computer-Based Medical Systems (CBMS'05) Pub Date : 2005-06-23 DOI: 10.1109/CBMS.2005.30
K. Korotkov
{"title":"Analysis and monitoring of the human energy state with gas discharge visualization technique","authors":"K. Korotkov","doi":"10.1109/CBMS.2005.30","DOIUrl":"https://doi.org/10.1109/CBMS.2005.30","url":null,"abstract":"Recent applications of the GDV Technique - Stimulated opto-electron emission of biological subjects - are under consideration. Overview of the main applications is presented: analysis and monitoring of patients in medicine; estimation of readiness for the competitive activity among elite athletes; Frontier Science Study; study of water and liquids. The data presented demonstrate high sensitivity of the GDV technique for the follow-up of individual person's reaction to different treatment modalities and influences, evaluation of different states of consciousness; detection of small impurities in water.","PeriodicalId":119367,"journal":{"name":"18th IEEE Symposium on Computer-Based Medical Systems (CBMS'05)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125277398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
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