A Time-Domain Hybrid Analysis Method for Detecting and Quantifying T-Wave Alternans

<table>An example of simulated ECG tracings with/without TWA. (a) Simulated ECG tracings not affected by TWA (N_TWA); (b) simulated ECG tracings with stationary <svg height="15.6125" id="M66" style="vertical-align:-2.29482pt" version="1.1" viewbox="0 0 40.662498 15.6125" width="40.662498" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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q0 -76 10 -138.5t37 -107.5t69 -45q32 0 55.5 25t35.5 68.5t17.5 91.5t5.5 105t-5.5 105.5t-18 92t-36 68t-56.5 24.5z" id="x30"></path></g><g transform="matrix(.017,-0,0,-.017,19.203,11.112)"><path d="M538 96q-38 -45 -84 -76.5t-71 -31.5q-44 0 -15 117q12 49 18 89h-2q-99 -128 -163 -178q-36 -28 -70 -28q-26 0 -44 38h-2q-16 -69 -16 -129q0 -43 11 -75.5t24 -42.5l1 -6q-7 -12 -24.5 -23t-37.5 -11q-40 0 -40 76q0 52 35 202l94 407l78 24l5 -5q-32 -122 -72 -310
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</svg> TWA (S_TWA50).</table>

Computational and Mathematical Methods in Medicine

fig4

Figure 4

Figure 4: A Time-Domain Hybrid Analysis Method for Detecting and Quantifying T-Wave Alternans 