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[1992] Proceedings Fifth Annual IEEE Symposium on Computer-Based Medical Systems最新文献

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Quantitative assessment of mitral regurgitation by automated contrast 2D echocardiography 自动对比二维超声心动图定量评价二尖瓣反流
[1992] Proceedings Fifth Annual IEEE Symposium on Computer-Based Medical Systems Pub Date : 1992-06-14 DOI: 10.1109/CBMS.1992.245020
Shuqing Zhang, J. P. M. D. Sá, M. Guerreiro, C. Abreu-Lima
{"title":"Quantitative assessment of mitral regurgitation by automated contrast 2D echocardiography","authors":"Shuqing Zhang, J. P. M. D. Sá, M. Guerreiro, C. Abreu-Lima","doi":"10.1109/CBMS.1992.245020","DOIUrl":"https://doi.org/10.1109/CBMS.1992.245020","url":null,"abstract":"Describes some approaches to the adaptive detection of microbubbles in contrast 2D echocardiograms and mathematical descriptions of microbubble characteristic movement patterns for quantitative assessment of mitral regurgitation (MR). A hierarchical linear classifier was designed by using features selected from the descriptions for distinguishing 4-class MR. With 202 image sequences, the classifier's performance was validated by using substitution and rotation methods yielding a sensitivity (SE) of 85.9%, a specificity (SP) of 66.8%, and an overall correct classification rate of 61.8%, as well as partially correct SE of 95%, SP of 89.8%, and overall classification rate of 90.5%, which are clinically acceptable.<<ETX>>","PeriodicalId":197891,"journal":{"name":"[1992] Proceedings Fifth Annual IEEE Symposium on Computer-Based Medical Systems","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123692114","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
Simulated annealing and iterated conditional modes with selective and confidence enhanced update schemes 用选择性和置信度增强的更新方案模拟退火和迭代条件模式
[1992] Proceedings Fifth Annual IEEE Symposium on Computer-Based Medical Systems Pub Date : 1992-06-14 DOI: 10.1109/CBMS.1992.244940
Y. Hu, T. J. Dennis
{"title":"Simulated annealing and iterated conditional modes with selective and confidence enhanced update schemes","authors":"Y. Hu, T. J. Dennis","doi":"10.1109/CBMS.1992.244940","DOIUrl":"https://doi.org/10.1109/CBMS.1992.244940","url":null,"abstract":"Proposes a selective update scheme for both SA (simulated annealing) and ICMs (iterated conditional modes) which only visits sites within inhomogeneous neighborhoods. A second scheme is proposed to enhance the update confidence at each site by incorporating contextual information in terms of neighbor label class probability distributions, instead of their current realizations. The two update schemes reduce the computation demand and improve estimation accuracy. Both schemes are tested on a noise-contaminated Markov random field test image. The results show that ICM and SA with selective update achieve a computational savings of five times on average, without introducing noticeable degradation. The confidence enhanced update scheme, working with SA and ICM, much improves the final estimation accuracy. In particular for ICM, it produces similar results to those of SA, but uses only a fraction of the iterations needed by the latter.<<ETX>>","PeriodicalId":197891,"journal":{"name":"[1992] Proceedings Fifth Annual IEEE Symposium on Computer-Based Medical Systems","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122930501","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: 11
Combination of neural networks and fuzzy sets as a basis for medical expert systems 神经网络与模糊集的结合作为医学专家系统的基础
[1992] Proceedings Fifth Annual IEEE Symposium on Computer-Based Medical Systems Pub Date : 1992-06-14 DOI: 10.1109/CBMS.1992.244921
M. Gorzałczany, M. McLeish
{"title":"Combination of neural networks and fuzzy sets as a basis for medical expert systems","authors":"M. Gorzałczany, M. McLeish","doi":"10.1109/CBMS.1992.244921","DOIUrl":"https://doi.org/10.1109/CBMS.1992.244921","url":null,"abstract":"Presents a technique for building expert systems which combines the fuzzy-set approach with artificial neural network structures. This technique can effectively deal with two types of medical knowledge, a nonfuzzy one and a fuzzy one, which usually contribute to the process of medical diagnosis. Nonfuzzy numerical data are obtained from medical tests. Fuzzy linguistic rules describing the diagnosis process are provided by a human expert. The proposed method has been successfully applied in veterinary medicine as a support system in the diagnosis of canine liver diseases.<<ETX>>","PeriodicalId":197891,"journal":{"name":"[1992] Proceedings Fifth Annual IEEE Symposium on Computer-Based Medical Systems","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124813696","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
Knowledge-based system for medical image compression 基于知识的医学图像压缩系统
[1992] Proceedings Fifth Annual IEEE Symposium on Computer-Based Medical Systems Pub Date : 1992-06-14 DOI: 10.1109/CBMS.1992.244999
M. Nooman, Abdalla S. A. Mohamed, M. Rasmy
{"title":"Knowledge-based system for medical image compression","authors":"M. Nooman, Abdalla S. A. Mohamed, M. Rasmy","doi":"10.1109/CBMS.1992.244999","DOIUrl":"https://doi.org/10.1109/CBMS.1992.244999","url":null,"abstract":"Presents a way of systemic knowledge modelling representing objective medical image knowledge and compression for picture archiving and communication. A novel encoder model is proposed such that high compression ratio and acceptable visual perception are achieved. The developed knowledge-base system is designed to deal with selecting the suitable structure for the encoder model such that the above criteria are realized.<<ETX>>","PeriodicalId":197891,"journal":{"name":"[1992] Proceedings Fifth Annual IEEE Symposium on Computer-Based Medical Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129607311","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: 0
Intensive-Help-a knowledge-based system for intensive care units intensive - help -一个重症监护病房的知识系统
[1992] Proceedings Fifth Annual IEEE Symposium on Computer-Based Medical Systems Pub Date : 1992-06-14 DOI: 10.1109/CBMS.1992.244931
Holger Dürer, K. Wang, M. Wischnewsky, Jun Zhao, J. Hommel
{"title":"Intensive-Help-a knowledge-based system for intensive care units","authors":"Holger Dürer, K. Wang, M. Wischnewsky, Jun Zhao, J. Hommel","doi":"10.1109/CBMS.1992.244931","DOIUrl":"https://doi.org/10.1109/CBMS.1992.244931","url":null,"abstract":"Consideration is given to Intensive-Help (IH), a knowledge-based system which combines the power of an expert system, a database, and a real-time system to provide a full-scale support for intensive care, ranging from documentation to therapy suggestions. The authors describe the problem domain, the overall open system structure, the knowledge base structure, which is based on a multi-agent architecture, the interface of IH to different online monitoring instruments, and the knowledge representation methods supported by the field prototype of IH. Directions of future efforts are discussed.<<ETX>>","PeriodicalId":197891,"journal":{"name":"[1992] Proceedings Fifth Annual IEEE Symposium on Computer-Based Medical Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128888715","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: 1
Automated corneal endothelial cell analysis 自动角膜内皮细胞分析
[1992] Proceedings Fifth Annual IEEE Symposium on Computer-Based Medical Systems Pub Date : 1992-06-14 DOI: 10.1109/CBMS.1992.245000
R. Nadachi, K. Nunokawa
{"title":"Automated corneal endothelial cell analysis","authors":"R. Nadachi, K. Nunokawa","doi":"10.1109/CBMS.1992.245000","DOIUrl":"https://doi.org/10.1109/CBMS.1992.245000","url":null,"abstract":"Corneal endothelial cell images taken by a noncontact specular microscope usually have a strong gray-scale gradient and flare that make automated analysis very difficult. The development is reported of an automated analysis system of the noncontact specular image, using a specially variant contrast enhancement to remove these obstacles from the original image. The results obtained by the system are compared with the traditional method that uses a hand sketch of boundaries of the cell.<<ETX>>","PeriodicalId":197891,"journal":{"name":"[1992] Proceedings Fifth Annual IEEE Symposium on Computer-Based Medical Systems","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121660412","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: 23
Extracting 3-D structure and focused images using an optical microscope 利用光学显微镜提取三维结构和聚焦图像
[1992] Proceedings Fifth Annual IEEE Symposium on Computer-Based Medical Systems Pub Date : 1992-06-14 DOI: 10.1109/CBMS.1992.244936
Ushir B. Shah, S. Nayar
{"title":"Extracting 3-D structure and focused images using an optical microscope","authors":"Ushir B. Shah, S. Nayar","doi":"10.1109/CBMS.1992.244936","DOIUrl":"https://doi.org/10.1109/CBMS.1992.244936","url":null,"abstract":"Describes a novel method for recovering three-dimensional shapes and focused images of microscopic objects. A small sequence of object images is obtained by translating the object through the focused plane of the microscope. The sum-modified-Laplacian (SML) operator is developed to compute local measures of the quality of image focus. The SML operator is applied to the image sequence, and the focus measures obtained at each image point are used to compute local depth estimates. Two algorithms for depth estimation are presented. The first algorithm simply looks for the focus level that maximizes the focus measure at each image point. The second algorithm uses a model to interpolate the focus measures to obtain more accurate depth estimates. The algorithms were implemented and tested on a variety of biological specimens. The authors present a brief description of a fully automated shape-from-focus system that is currently being used to inspect both medical and industrial samples.<<ETX>>","PeriodicalId":197891,"journal":{"name":"[1992] Proceedings Fifth Annual IEEE Symposium on Computer-Based Medical Systems","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122474629","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
MR image resolution enhancement using a multi-layer neural network 基于多层神经网络的磁共振图像分辨率增强
[1992] Proceedings Fifth Annual IEEE Symposium on Computer-Based Medical Systems Pub Date : 1992-06-14 DOI: 10.1109/CBMS.1992.245027
Hong Yan, J. Mao, Benjamin Chen
{"title":"MR image resolution enhancement using a multi-layer neural network","authors":"Hong Yan, J. Mao, Benjamin Chen","doi":"10.1109/CBMS.1992.245027","DOIUrl":"https://doi.org/10.1109/CBMS.1992.245027","url":null,"abstract":"A magnetic resonance image may contain truncation artifacts if there are not enough high-frequency data when the conventional Fourier transform method is used for reconstruction. The authors propose a method for reducing the artifacts using a multilayer neural network. The network consists of one linear output layer and at least one nonlinear hidden layer. In this method the missing high-frequency components are predicted based on known low-frequency components and are used to improve the resolution of the image. The method is tested with simulated data with good results.<<ETX>>","PeriodicalId":197891,"journal":{"name":"[1992] Proceedings Fifth Annual IEEE Symposium on Computer-Based Medical Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126932970","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: 0
An approach to verifying concurrent systems-a medical information bus (MIB) case study 一种验证并发系统的方法——以医疗信息总线(MIB)为例
[1992] Proceedings Fifth Annual IEEE Symposium on Computer-Based Medical Systems Pub Date : 1992-06-14 DOI: 10.1109/CBMS.1992.244961
P. Curran, K. Norrie
{"title":"An approach to verifying concurrent systems-a medical information bus (MIB) case study","authors":"P. Curran, K. Norrie","doi":"10.1109/CBMS.1992.244961","DOIUrl":"https://doi.org/10.1109/CBMS.1992.244961","url":null,"abstract":"An automated method for verifying aspects of the data link communications protocol for the proposed IEEE P1073 Standard for Medical Device Communications is described. This protocol is specified using the formal description technique LOTOS, and the specification and an associated verification are implemented in the Larch Theorem Prover. The advantages of this approach for the design and verification of large and complex systems are discussed.<<ETX>>","PeriodicalId":197891,"journal":{"name":"[1992] Proceedings Fifth Annual IEEE Symposium on Computer-Based Medical Systems","volume":"212 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115646527","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
Nursing workload management for a patient data management system 基于患者数据管理系统的护理工作量管理
[1992] Proceedings Fifth Annual IEEE Symposium on Computer-Based Medical Systems Pub Date : 1992-06-14 DOI: 10.1109/CBMS.1992.244945
K. Roger, C. Collet, N. Fumai, M. Petroni, A. Malowany, F. Carnevale, R. Gottesman
{"title":"Nursing workload management for a patient data management system","authors":"K. Roger, C. Collet, N. Fumai, M. Petroni, A. Malowany, F. Carnevale, R. Gottesman","doi":"10.1109/CBMS.1992.244945","DOIUrl":"https://doi.org/10.1109/CBMS.1992.244945","url":null,"abstract":"A new bedside data entry system is being developed for the patient data management system at the Pediatric Intensive Care Unit of the Montreal Children's Hospital. Part of this development is the addition of a nursing workload manager (NWM) to help plan and document the nurses' workload. The NWM has four main functions: generate nursing care plans, automate workload measurement scoring, schedule nursing activities, and set up fluid balance charts by integrating with a fluid balance module. The design and operation of the NWM are presented. The implementation of the nursing care plan generation and workload measurement scoring is detailed along with the results of a user evaluation session. The application was developed using IBM's OS/2 Presentation Manager window environment.<<ETX>>","PeriodicalId":197891,"journal":{"name":"[1992] Proceedings Fifth Annual IEEE Symposium on Computer-Based Medical Systems","volume":"49 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120863983","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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