Journal ArticleDOI
Noise reduction of ECG by averaging. An experimental study of the procedure and a validated method.
TLDR
Time-coherent averaging has been implemented on a computer with 12,000 12-bit words of core memory, suitable for on-line use in any clinical laboratory and tested for its efficiency in eliminating ectopic beats from the average.Abstract:
Electrical noise often hampers the interpretation of ECG and other heart-synchronous signals. Time-coherent averaging is a commonly used method to reduce the noise. This method has been implemented on a computer with 12,000 12-bit words of core memory, suitable for on-line use in any clinical laboratory. An analysis was made of which demands apply to the exactness of synchronization of added heart cycles. The method was tested with respect to these demands and also, on a limited scale, for its efficiency in eliminating ectopic beats from the average.read more
Citations
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Patent
Signal processing apparatus.
Kheir Diab,Esmaiel Kiani-Azarbayjany,Ibrahim M. Elfadel,Rex Mccarthy,Walter M. Weber,Robert Smith +5 more
TL;DR: In this paper, a method and apparatus for analyzing two measured signals that are modeled as containing primary and secondary portions is presented, where coefficients relate the two signals according to a model defined in accordance with the present invention.
Patent
Signal processing apparatus and method
Mohamed K. Diab,Rex J. McCarthy +1 more
TL;DR: In this article, a method and an apparatus to analyze two measured signals that are modeled as containing desired and undesired portions such as noise, FM and AM modulation are presented, and coefficients relate the two signals according to a model defined in accordance with the present invention.
Journal ArticleDOI
Computer analysis of the exercise ECG: a review.
Journal ArticleDOI
Treadmill exercise testing. Part I.
TL;DR: The quality and quantity of the studies evaluating exercise testing have established it as one of the safest and most valuable procedures for evaluating the cardiovascular system and the value of the exercise test will increase even further.
References
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Journal Article
Cardiovascular survey methods
Geoffrey Rose,Henry W. Blackburn +1 more
TL;DR: Cardiovascular survey methods, Card cardiovascular survey methods , مرکز فناوری اطلاعات و اصاع رسانی, کδاوρزی
Journal Article
Cardiovascular survey methods.
Geoffrey Rose,Henry W. Blackburn +1 more
TL;DR: In this paper, the authors present a survey method for cardiovascular survey methods, which is based on the survey methods of Cardiovascular Survey Methods (CSM) survey method and the survey method of the Cardiovascular survey methods.
Journal ArticleDOI
On-line Analysis of the Exercise Electrocardiogram
TL;DR: Use of a computer program as an investigative instrument in its own right, rather than as a means of duplicating classical human measurements, shows promise for improving the diagnosis of ischemic heart disease.
Journal ArticleDOI
Uses and limitations of stress testing in the evaluation of ischemic heart disease
TL;DR: It is concluded that, in patients with typical angina pectoris or with chest pain which clearly does not resemble anginapectoris, stress testing appears to be superfluous since it provides little additional information beyond that which may be obtained from the patient's history.
Journal ArticleDOI
Computer Quantitation of the ST-Segment Response during Maximal Treadmill Exercise Clinical Correlation
TL;DR: The ST-segment response during maximal treadmill exercise was quantitated by digital computer after excessive noise in the electrocardiographic data was reduced by computer averaging.
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