[1989] Proceedings. Computers in Cardiology最新文献

Quantitative angiographic identification of functional left ventricular aneurysms 功能性左心室动脉瘤的定量血管造影鉴定

[1989] Proceedings. Computers in Cardiology Pub Date : 1989-09-19 DOI: 10.1109/CIC.1989.130596

C. Vassanelli, G. Menegatti, G. Morando, M. Turri, G. Canali, L. Zanolla, P. Zardini

引用次数: 1

A computer system for the quantification of coronary artery stenoses-design of the human computer interface 冠状动脉狭窄定量计算机系统——人机界面设计

[1989] Proceedings. Computers in Cardiology Pub Date : 1989-09-19 DOI: 10.1109/CIC.1989.130506

P. Wankling, X. Escaned, R. Perry, A. Seth, J. Newell, M. Shiu

{"title":"A computer system for the quantification of coronary artery stenoses-design of the human computer interface","authors":"P. Wankling, X. Escaned, R. Perry, A. Seth, J. Newell, M. Shiu","doi":"10.1109/CIC.1989.130506","DOIUrl":"https://doi.org/10.1109/CIC.1989.130506","url":null,"abstract":"A low-cost, clinically usable system has been developed for the objective assessment of the severity of coronary artery stenoses from single-view angiograms. The system is based on a desktop computer with incorporated frame grabber. Images are captured by means of a video camera. Both diameter and densitometric cross-sectional area measurements can be made on a selected artery segment. Particular attention has been paid to the design of an appropriate man-machine interface, suitable for clinical use. Software tools have been developed for this purpose. They facilitate an iterative approach to program development and also provide for the needs of both the experienced and inexperienced user. The stenosis analysis system has been tested by using phantoms constructed in Perspex. These are designed to simulate arteries of various diameters and also an asymmetric stenosis. Results show good agreement with measurements for videodensitometry; however, diameter measurements are hampered by the unreliability of the edge detection algorithm, particularly when severe stenoses are encountered.<<ETX>>","PeriodicalId":161494,"journal":{"name":"[1989] Proceedings. Computers in Cardiology","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121264669","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 annotated database aimed at performance evaluation of algorithms for ST-T change analysis 一个带注释的数据库，旨在对ST-T变化分析算法进行性能评估

[1989] Proceedings. Computers in Cardiology Pub Date : 1989-09-19 DOI: 10.1109/CIC.1989.130497

A. Taddei, A. Biagini, G. Distante, C. Marchesi, M. Mazzei, P. Pisani, N. Roggero, C. Zeelenberg

{"title":"An annotated database aimed at performance evaluation of algorithms for ST-T change analysis","authors":"A. Taddei, A. Biagini, G. Distante, C. Marchesi, M. Mazzei, P. Pisani, N. Roggero, C. Zeelenberg","doi":"10.1109/CIC.1989.130497","DOIUrl":"https://doi.org/10.1109/CIC.1989.130497","url":null,"abstract":"In 1985, the European Community set up a 'Concerted Action on Ambulatory Monitoring', whose goal was to define an ECG (electrocardiography) database as a reference for assessing the quality of ambulatory ECG monitoring (AECG) analyzers. Since it is now recognized that ST-T changes are highly relevant for the diagnosis of ischemic heart disease, it was agreed that the project should concentrate on setting up a standard for annotating ST-T changes. The pilot study, completed at the end of 1986, set up a small prototype database. After the project ended, it was decided that the interest shown by research groups and manufacturers warranted developing the full database. Thirteen groups from eight countries agreed to provide AECG tapes and to contribute to the annotations. So far, 106 AECG records, out of 175 submitted, have been admitted to the database and 96 have each been annotated by two different groups. Disagreements between the annotations have been analyzed for estimation of reliability. The first release of the database comprises 50 annotated records stored on CD-ROM.<<ETX>>","PeriodicalId":161494,"journal":{"name":"[1989] Proceedings. Computers in Cardiology","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125541595","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

Parameter estimation of left ventricular performance 左心室功能参数估计

[1989] Proceedings. Computers in Cardiology Pub Date : 1989-09-19 DOI: 10.1109/CIC.1989.130535

E. Nevo, Y. Lanir

引用次数: 6

Extracting ventricular and atrial compliance and mitral impedance from Doppler inflow velocity and chamber pressures: inversion of a mitral flow model 从多普勒流入速度和室压中提取心室和心房顺应性和二尖瓣阻抗:二尖瓣血流模型的反演

[1989] Proceedings. Computers in Cardiology Pub Date : 1989-09-19 DOI: 10.1109/CIC.1989.130467

J.D. Thomas, J. Newell, F. Flachskampf, C. Chen, Chun Ming Liu, A. Weyman

{"title":"Extracting ventricular and atrial compliance and mitral impedance from Doppler inflow velocity and chamber pressures: inversion of a mitral flow model","authors":"J.D. Thomas, J. Newell, F. Flachskampf, C. Chen, Chun Ming Liu, A. Weyman","doi":"10.1109/CIC.1989.130467","DOIUrl":"https://doi.org/10.1109/CIC.1989.130467","url":null,"abstract":"A lumped parameter mathematical model of left ventricular filling applicable to analysis of Doppler mitral velocity inflow patterns has been developed. As originally formulated, the model utilizes user-provided chamber compliance and mitral impedance parameters and returns the time course of chamber pressure and mitral velocity and flow. The authors describe their initial experience with an algorithm to invert the model, i.e. to analyze observed pressure and flow data and extract the compliance and impedance parameters underlying the observed curves. This algorithm repeatedly solves the forward model, adjusting the physiologic parameters using the Marquardt method until the fit to the observed pressure and flow data is optimized. This algorithm was tested against computer-generated data with up to 10% Gaussian noise. It has also been validated with data from an in vitro analog of the left heart and from a canine model of mitral stenosis. Other possible inversion schemes, such as those which utilize only noninvasive data, are also discussed.<<ETX>>","PeriodicalId":161494,"journal":{"name":"[1989] Proceedings. Computers in Cardiology","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126763812","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

Quantitative comparison of new image processing methods for volumetric analysis of left ventricular contrast echocardiograms 左心室超声造影容积分析新图像处理方法的定量比较

[1989] Proceedings. Computers in Cardiology Pub Date : 1989-09-19 DOI: 10.1109/CIC.1989.130569

E. Steinmetz, R. Brennecke, N. Wittlich, F. Schon, R. Erbel, J. Meyer

引用次数: 2

A work-station to study blood pressure ambulatory profiles 研究血压动态曲线的工作站

[1989] Proceedings. Computers in Cardiology Pub Date : 1989-09-19 DOI: 10.1109/CIC.1989.130589

F. del Pozo, M. Arredondo, E. Gómez, T. Barranquero, F. Halberg

引用次数: 1

Correlation of heart rate variability with ST changes during 24 hour Holter monitoring 24小时动态心电图监测中心率变异性与ST段变化的相关性

[1989] Proceedings. Computers in Cardiology Pub Date : 1989-09-19 DOI: 10.1109/CIC.1989.130557

D. Sapoznikov, M. Luria, Y. Mahler, M. Gotsman

引用次数: 5

Analysis of the ventricular fibrillation ECG with methods from nonlinear dynamics 用非线性动力学方法分析心室颤动心电图

[1989] Proceedings. Computers in Cardiology Pub Date : 1989-09-19 DOI: 10.1109/CIC.1989.130605

F. Ravelli, R. Antolini

引用次数: 5

Interactive measurement of three-dimensional cardiac morphology 三维心脏形态的交互式测量

[1989] Proceedings. Computers in Cardiology Pub Date : 1989-09-19 DOI: 10.1109/CIC.1989.130586

Shawn C. Becker, William A. Barrett

引用次数: 1