Two-dimensional Fourier spectrum of QRST integral maps in classification of patients prone to ventricular arrhythmia.
Two-dimensional Fourier spectra of QRST integral maps, obtained by body surface potential mapping, were analyzed to identify subjects prone to ventricular arrhythmia, when they have not been identified by the extrema count method. The diagnostic performance (84.38 percent) of the peak value of the Fourier spectrum as a classifier for subjects prone to ventricular arrhythmia showed an improvement of 3.65 percent over the use of the extrema count method as a classifier.
Periyalwar
S S
SS
Nugent
S T
ST
Horacek
B M
BM
D001145:Arrhythmias, Cardiac / Q000503:physiopathology*; D004562:Electrocardiography; D005583:Fourier Analysis; D006801:Humans