Key result
An automatic QRS onset and offset detection algorithm for body surface mapping achieved identical or adjacent localization of ventricular tachycardia origin in 95% of cases compared to a human expert.
Why the study?
Does an automatic QRS onset and offset detection algorithm accurately localize the site of origin of ventricular tachycardia compared to human expert evaluation?
Does an automatic QRS onset and offset detection algorithm accurately localize the site of origin of ventricular tachycardia compared to human expert evaluation?
An automated QRS detection algorithm can accurately localize the site of origin of ventricular tachycardia, matching human expert evaluation in 95% of cases.
May support automated VT localization by body surface mapping; leaves open prospective validation before clinical use.
A QRS onset and offset detection algorithm has been developed for use in body surface QRS integral mapping of ventricular tachycardia. To determine QRS intervals, the algorithm uses two computed signals: the sum of the absolute values of the first derivatives of all leads and the sum of the absolute values of all leads. The second order derivative of the latter parameter is used to detect the time instants of QRS onset and offset. Using the algorithm, QRS integral maps are subsequently computed, which are correlated with a database of QRS integral maps in order to localize the site of origin of ventricular tachycardia. Comparison of the performance of the algorithm with visual evaluation by a human expert in this procedure revealed, in 95% of the cases, an identical or adjacent localization of the site of origin.
No takes yet. Share an insight, caveat, or question.
Kemmelings et al. (1994) studied Ventricular tachycardia. Automatic QRS onset and offset detection algorithm vs. Visual evaluation by a human expert was evaluated on Localization of the site of origin of ventricular tachycardia. An automatic QRS onset and offset detection algorithm for body surface mapping achieved identical or adjacent localization of ventricular tachycardia origin in 95% of cases compared to a human expert.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: