Myocardial wall motion evaluation using amplitude frequency spectral analysis.
Frequency spectral analysis of cardiac wall motion as calculated from the recorded video kymogram are demonstrated. Characteristic harmonics following the fundamental frequency of the cardiac rate have been demonstrated to have an alternating sequential energy distribution as measured from the free margin of the left ventricle of humans. The characteristic patterns occur in approximately 80% of the 50 patients evaluated. The correlation of these harmonics with physiologic events is not yet complete. Amplitude frequency spectral analysis offers an objective method for analysis of cardiac kymography not otherwise possible.
D000328:Adult; D000368:Aged; D000818:Animals; D003201:Computers; D003720:Densitometry; D004285:Dogs; D004571:Electrokymography / Q000379:methods*; D001330:Electronic Data Processing; D005260:Female; D006321:Heart / Q000000981:diagnostic imaging / Q000502:physiology; D006334:Heart Function Tests / Q000295:instrumentation*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013637:Tape Recording; D013690:Television