Analysis of multi-lead QT dispersion by means of an algorithm implemented on Labview
Biomedical Engineering Committee
Master of Science
Reisman, Stanley S.
Rockland, Ronald H.
Kristol, David S.
Medical instruments and apparatus
QT dispersion measurement is significant in diagnostic ECG, and several methods are proposed in the literature to implement QT measurement.
This study consists of two parts: The first part was the development of an algorithm to measure both QT interval and QT dispersion. To check the reliability of the algorithm, 25 single channel ECGs were recorded and their QT intervals were computed. On two subjects, three and four lead ECG data were recorded respectively and their QT dispersions were statistically analyzed. Another part of this study dealt with the effect of the electric dipole of the heart on QT dispersion.
It was found that the mean and the standard deviation of the resulting QT dispersions were significantly smaller than those found in previous studies. In near and far field analysis, subjecting the data to a student's T test revealed that both near and far field QT dispersion data were drawn from the same population.
njit-etd1998-003 (71 pages ~ 2,882 KB pdf)
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Created March 26, 2003