Document Detail


QT interval measurement using RMED curve; a novel approach based on wavelet techniques.
MedLine Citation:
PMID:  20455128     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Hypothesis/objective: Prolonged QT interval is an index of propensity for dangerous ventricular tachyarrhythmias. The aim of this article is to establish an automatic algorithm for QT interval measurement. Method: The proposed method is based on the continuous wavelet transform. In this method, the concepts of the rescaled wavelet coefficients and dominant scales of the electrocardiogram (ECG) components are used to perform detection of ECG characteristic points. A new concept of rescaled maximum energy density is introduced so as to perform the estimation of the QT interval. Results and conclusion: We have applied the algorithm to the PTB database of the Physiobank∖Physionet in lead II. Then, the results were evaluated using pertinent reference QT. The criterion used for evaluation of the method's performance is the root mean square (RMS) error. The method approached the RMS error of 27.89 ms for 549 subjects. The proposed method is fast, simple and is applicable to a wide range of ECG cardio cycle morphologies.
Authors:
M Ghasemi; A Ghaffari; H Sadabadi; H Golbayani
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Computer methods in biomechanics and biomedical engineering     Volume:  13     ISSN:  1476-8259     ISO Abbreviation:  Comput Methods Biomech Biomed Engin     Publication Date:  2010 Dec 
Date Detail:
Created Date:  2010-12-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9802899     Medline TA:  Comput Methods Biomech Biomed Engin     Country:  England    
Other Details:
Languages:  eng     Pagination:  857-64     Citation Subset:  IM    
Affiliation:
Department of Mechanical Engineering, K.N. Toosi University of Technology, Tehran, Iran.
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