International journal of bio-medical computing最新文献_第9页

Assessment and evaluation of information technologies in medicine 医学信息技术的评估和评价

International journal of bio-medical computing Pub Date : 1996-03-01 DOI: 10.1016/S0020-7101(96)90002-1

D.K. Donker Ph.D.

引用次数: 65

Establishing a reliable visual function test and applying it to screening optic nerve disease in onchocercal communities 建立可靠的视功能检测方法并应用于盘尾神经科人群视神经疾病筛查

International journal of bio-medical computing Pub Date : 1996-03-01 DOI: 10.1016/0020-7101(96)01162-2

G. Cheng , X. Liu , J.X. Wu , B. Jones

{"title":"Establishing a reliable visual function test and applying it to screening optic nerve disease in onchocercal communities","authors":"G. Cheng , X. Liu , J.X. Wu , B. Jones","doi":"10.1016/0020-7101(96)01162-2","DOIUrl":"10.1016/0020-7101(96)01162-2","url":null,"abstract":"<div><p>The Computer Controlled Video Perimetry (CCVP) is a computer screening test for detecting visual function loss caused by onchocerciasis, glaucoma, etc. Installed on portable computers, the CCVP has been shown to be high acceptability in field community investigation. However, it is regarded to be difficult in obtaining reliable results from portable computer screening tests because of human behavioural variants and the lack of standard testing environment. In this paper, we propose an architecture for implementing a more reliable CCVP system. In particular, a self-organising neural network is applied to manage measurement noise caused by behavioural factors. A control unit is introduced to manage the overall behaviour of the system. The integrated test system has been used to screen optic nerve disease in onchocercal communities of rural Nigeria and the experimental results obtained from a large number of test records are very encouraging: reliable results from volatile test environments may be obtained using the proposed method.</p></div>","PeriodicalId":75935,"journal":{"name":"International journal of bio-medical computing","volume":"41 1","pages":"Pages 47-53"},"PeriodicalIF":0.0,"publicationDate":"1996-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-7101(96)01162-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19709537","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: 6

Commentary 评论

International journal of bio-medical computing Pub Date : 1996-01-01 DOI: 10.1016/S0020-7101(96)80007-9

J.G. Llaurado (Section Editor)

引用次数: 0

Within-centre evaluation of hypercalcaemia discriminant functions 5 years after their development 高钙判别功能发展5年后的中心内评价

International journal of bio-medical computing Pub Date : 1996-01-01 DOI: 10.1016/0020-7101(95)01148-X

A. Frølich , B.F. Nielsen , K. Conradsen , P. McNair , I.B. Transbøl

引用次数: 3

Comparison of different neural network algorithms in the diagnosis of acute appendicitis 不同神经网络算法在急性阑尾炎诊断中的比较

International journal of bio-medical computing Pub Date : 1996-01-01 DOI: 10.1016/0020-7101(95)01147-1

Erkki Pesonen , Matti Eskelinen , Martti Juhola

引用次数: 27

Subject index volume 40 (1996) 主题索引第40卷(1996年)

International journal of bio-medical computing Pub Date : 1996-01-01 DOI: 10.1016/S0020-7101(96)80012-2

引用次数: 0

Revealing the distinction between perception and cognition through intra-individual variability of visual evoked responses 通过视觉诱发反应的个体变异揭示知觉与认知的区别

International journal of bio-medical computing Pub Date : 1996-01-01 DOI: 10.1016/0020-7101(95)01142-0

Valentin D. Constantinescu

{"title":"Revealing the distinction between perception and cognition through intra-individual variability of visual evoked responses","authors":"Valentin D. Constantinescu","doi":"10.1016/0020-7101(95)01142-0","DOIUrl":"10.1016/0020-7101(95)01142-0","url":null,"abstract":"<div><p>Searching for a method to objectively detect the cognitive activity of the brain, the variability of visual evoked responses (ER) was analysed in 75 human subjects and 10 animals. The individual ERs of a normal subject were found typically very scattered in the first approx. 120 ms after stimulation, converging at 160–220 ms and then diverging again progressively. This variability pattern (VP) is <em>event-related</em> and is not attributable to background noise. On the other hand, statistically significant correlation showed that in most patients, with anatomically intact visual structures but with pronounced mental troubles, the VP is absent and the ERs are randomly scattered. Based on these results we consider that the event-related variability reflects the <em>cognition</em> function of the subjects and that it is instrumental in evidencing the distinction between cognitive and perceptive processes. The results are further consistent with the idea that cognition implies the chaotic activity of certain neural populations and that the VP reflects this chaotic, non-repetitive, non-linear and impredictable but effective neural activity.</p></div>","PeriodicalId":75935,"journal":{"name":"International journal of bio-medical computing","volume":"40 3","pages":"Pages 169-178"},"PeriodicalIF":0.0,"publicationDate":"1996-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-7101(95)01142-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19642295","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

Author index volume 40 (1996) 作者索引第40卷(1996年)

International journal of bio-medical computing Pub Date : 1996-01-01 DOI: 10.1016/S0020-7101(96)80011-0

引用次数: 0

Nursing information management and processing: a framework and definition for systems analysis, design and evaluation 护理信息管理与处理:系统分析、设计与评估的框架与定义

International journal of bio-medical computing Pub Date : 1996-01-01 DOI: 10.1016/0020-7101(95)01144-7

William T.F. Goossen

引用次数: 35

Object-free adaptive meshing in highly heterogeneous 3-D domains 高度异构三维域的无对象自适应网格划分

International journal of bio-medical computing Pub Date : 1996-01-01 DOI: 10.1016/0020-7101(95)01146-3

P.H. Schimpf , D.R. Haynor , Y. Kim

{"title":"Object-free adaptive meshing in highly heterogeneous 3-D domains","authors":"P.H. Schimpf , D.R. Haynor , Y. Kim","doi":"10.1016/0020-7101(95)01146-3","DOIUrl":"10.1016/0020-7101(95)01146-3","url":null,"abstract":"<div><p>Traditional approaches to the generation of finite element meshes are well suited for modeling the homogeneous or mildly heterogeneous domains presented by man-made objects, but are difficult to apply to the complex 3-D domains encountered in some biomedical applications. In this paper, we describe an adaptive algorithm that automates the modeling of these domains. The method differs from traditional approaches in that no explicit description is required of the boundaries between objects with dissimilar material properties. The algorithm uses images of the tissue class to build irregular meshes, and continuity is enforced by constraining the solution at irregular nodes. Local estimates of the error in the flux solution are used to refine the mesh. For an analytic problem with a rapid change along a spherical boundary, the adaptive method converges to a 1% voltage error using 25% of the degrees of freedom required by a uniform refinement, and to a 5% voltage gradient error using 11% of the degrees of freedom. For a defibrillation model in a pig thorax, the voltage gradient solution in the ventricles of the heart converges to within 5% of a uniform mesh solution using less than 8% of the memory and processing resources required by a uniform mesh, which has been the only practical alternative for subject-specific modeling.</p></div>","PeriodicalId":75935,"journal":{"name":"International journal of bio-medical computing","volume":"40 3","pages":"Pages 209-225"},"PeriodicalIF":0.0,"publicationDate":"1996-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-7101(95)01146-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19642299","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: 25