Computers in cardiology最新文献_第6页

Integrated access to function test results from within a cardiology information system 集成访问功能测试结果从一个心脏病学信息系统

Computers in cardiology Pub Date : 2002-09-22 DOI: 10.1109/CIC.2002.1166796

E. T. van der Velde, W.H.G.J. Hoekstra, T. Witteman, C. Brobbel, D. Atsma, M. Baljon

引用次数: 1

Spectral analysis of multiunit action potential trains of muscle sympathetic nerve activity in humans 人体肌肉交感神经活动多单元动作电位序列的频谱分析

Computers in cardiology Pub Date : 2002-09-22 DOI: 10.1109/CIC.2002.1166808

R. Brychtal, W. Charoensuk, L. Bernardi, R. Furlan, R. Shiavi, A. Diedrich

引用次数: 4

3D navigator for localization of peripheral coronary segments by magnetic resonance imaging angiography 三维导航定位冠状动脉周围段的磁共振成像血管造影

Computers in cardiology Pub Date : 2002-09-22 DOI: 10.1109/CIC.2002.1166851

P. Marcheschi, M. Lombardi, A. Mazzarisi, R. Testa, A. Pingitore, A. Benassi, P. Marraccini

引用次数: 0

On-line integration of cardiological data to support medical decision making in patients with ischemic heart disease 在线整合心脏病学数据以支持缺血性心脏病患者的医疗决策

Computers in cardiology Pub Date : 2002-09-22 DOI: 10.1109/CIC.2002.1166853

G. A. L'Abbate, C. Carpeggiani, C. Marchesi, A. L'Abbate

引用次数: 2

Pattern complexity and nonlinear dynamics in RR-sequences rr序列的模式复杂度和非线性动力学

Computers in cardiology Pub Date : 2002-09-22 DOI: 10.1109/CIC.2002.1166734

A. Ripoli, M. Emdin, C. Passino, L. Zyw

{"title":"Pattern complexity and nonlinear dynamics in RR-sequences","authors":"A. Ripoli, M. Emdin, C. Passino, L. Zyw","doi":"10.1109/CIC.2002.1166734","DOIUrl":"https://doi.org/10.1109/CIC.2002.1166734","url":null,"abstract":"The analysis of time series measured from nonlinear signals, may be performed either in the phase space or in the tie-domain. The Largest Lyapunov Exponent (LLE) characterises exponential divergence of trajectories in the phase space; fractal analysis is able to describe the complex pattern of a given time series. To evaluate the relation between the dynamic behavior and pattern complexity of the inherent biological system, RR-interval sequences were derived from 24-hour Holter recordings performed in 55 healthy subjects (37/spl plusmn/4 years, 34 males). Pattern fractal analysis (PFD) was computed on the basis of the measured length and diameter of the signal pattern. and LLE was evaluated by the Wolf algorithm. For each subject, the linear regression between computed PFD and LLE measures over the 24-hour period has been computed, extracting the correlation coefficient and the slope of the PFD vs. LLE relation. The strongest linear correlation between LLE and PFD indicates a light link between the system dynamics and the pattern of the extracted signals. This link suggests the possibility of a direct evaluation of nonlinear dynamics, even over short time intervals, exploiting the computationally less expensive PFD.","PeriodicalId":80984,"journal":{"name":"Computers in cardiology","volume":"1 1","pages":"169-172"},"PeriodicalIF":0.0,"publicationDate":"2002-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/CIC.2002.1166734","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"62180401","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

Automatic border detection through a cardiac cycle to analyze left ventricular function 自动边界检测通过心脏周期分析左心室功能

Computers in cardiology Pub Date : 2002-09-22 DOI: 10.1109/CIC.2002.1166737

P. Negrini, P. Tomassini, G. Cella, M. Magrini, M. Ercolani, A. Mazzarisi, V. Gemignani, A. Ciampa, P. Marcheschi, P. Marraccini

引用次数: 4

Knowledge-guided automatic segmentation of the left ventricle from MR 知识引导下的左心室MR自动分割

Computers in cardiology Pub Date : 2002-09-22 DOI: 10.1109/CIC.2002.1166740

A. Pednekar, I. A. Kadadiaris, R. Muthupillai, S. Flamm

引用次数: 2

Modelling blood flow in coronary arteries with junctions 冠状动脉连接血流模型

Computers in cardiology Pub Date : 2002-09-22 DOI: 10.1109/CIC.2002.1166784

S. Corney, P. Johnston, D. Kilpatrick

{"title":"Modelling blood flow in coronary arteries with junctions","authors":"S. Corney, P. Johnston, D. Kilpatrick","doi":"10.1109/CIC.2002.1166784","DOIUrl":"https://doi.org/10.1109/CIC.2002.1166784","url":null,"abstract":"Numerical modelling of the coronary tree is well established. Solutions of the Navier-Stokes equations can produce wall shear stress distributions which can be used to correlate the position of shear stress distribution with coronary artery disease. We have previously demonstrated a technique for reconstructing a single branch of the coronary tree. The introduction of junctions into the model allows for accurate reconstruction of potentially the entire arterial tree. However the introduction of a realistic junction has proven to be difficult. A four section method for branching has been adopted, utilising three tubular segments and a small junction section as the join. This allows for automatic generation of the majority of the artery (the tubes), and a semi-automated procedure concentrating specifically on the junction. A structured mesh is used for the tubes, allowing for easy generation and improved computation time, whilst an unstructured mesh is used to accurately model the irregular shape of the junction. The four section method allows for easy insertion of more branches, depending on the level of detail required. Another advantage is that as time evolves, inducing conformational changes throughout the cardiac cycle, the tubes can be regenerated, whilst the junction needs only slight modification. Marked changes are induced in wall shear stress by either adding extra junctions to an arterial tree, or altering the shape of major branches.","PeriodicalId":80984,"journal":{"name":"Computers in cardiology","volume":"1 1","pages":"363-366"},"PeriodicalIF":0.0,"publicationDate":"2002-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/CIC.2002.1166784","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"62180874","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

New data acquisition using variable graphic display of the coronary vessel anatomy for rapid and easy creation of angiography reports 新的数据采集使用可变图形显示冠状血管解剖快速和容易创建血管造影报告

Computers in cardiology Pub Date : 2002-09-22 DOI: 10.1109/CIC.2002.1166785

J. Petersen, M. Petersen, A. Lauk, V. Brand, F. Neumann

引用次数: 0

Advanced detection of ST segment episodes in 24-hour ambulatory ECG data by automated tracking of transient ST segment reference level 通过自动跟踪暂态ST段参考水平，提前检测24小时动态心电数据中的ST段发作

Computers in cardiology Pub Date : 2002-09-22 DOI: 10.1109/CIC.2002.1166774

A. Smrdel, F. Jager

引用次数: 6