2016 Computing in Cardiology Conference (CinC) 2016
DOI: 10.22489/cinc.2016.016-137
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An Index for T:wave Pointwise Amplitude Variability Quantification

Abstract: The comparison between the pointwise amplitude of different T-waves provides insight into ventricular repolarization liability. However, T-wave pointwise amplitude variability can be confounded by time-domain variability. We, first, compared two algorithms for removing (warping) time-domain variability, one using the original and another one using a transformed T-wave (SRSF). We, next, compared the robustness against noise of two markers, d y and d a , of pointwise amplitude variability, after warping the unde… Show more

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Cited by 2 publications
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“…As demonstrated in [12], the optimal warping function can be obtained using the dynamic programming algorithm [13] as:…”
Section: Quantification Of Morphological Changesmentioning
confidence: 99%
“…As demonstrated in [12], the optimal warping function can be obtained using the dynamic programming algorithm [13] as:…”
Section: Quantification Of Morphological Changesmentioning
confidence: 99%
“…The square-root slope function (SRSF), q f (t), of a function f (t) is defined as the square-root of the derivative of f (t), considering the sign [9]. Then, as demonstrated in [10], the optimal warping function is the one that minimizes the amplitude difference between the SRSF of f r (t r ) and…”
Section: 3mentioning
confidence: 99%