Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography · 2003
Comparison of diagnostic quality of motion picture experts group-2 digital video with super VHS videotape for echocardiographic imaging.
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Harris Kevin M, Schum Kevin R, Knickelbine Thomas, Hurrell David G, Koehler Jodi L, Longe Terrence F
Аннотация
BACKGROUND: Motion Picture Experts Group-2 (MPEG2) is a broadcast industry standard that allows high-level compression of echocardiographic data. Validation of MPEG2 digital images compared with super VHS videotape has not been previously reported.
METHODS: Simultaneous super VHS videotape and MPEG2 digital images were acquired. In all, 4 experienced echocardiographers completed detailed reporting forms evaluating chamber size, ventricular function, regional wall-motion abnormalities, and measures of valvular regurgitation and stenosis in a blinded fashion. Comparisons between the 2 interpretations were then performed and intraobserver concordance was calculated for the various categories.
RESULTS: A total of 80 paired comparisons were made. The overall concordance rate was 93.6% with most of the discrepancies being minor (4.1%). Concordance was 92.4% for left ventricle, 93.2% for right ventricle, 95.2% for regional wall-motion abnormalities, and 97.8% for valve stenosis. The mean grade of valvular regurgitation was similar for the 2 techniques.
CONCLUSIONS: MPEG2 digital imaging offers excellent concordance compared with super VHS videotape.
METHODS: Simultaneous super VHS videotape and MPEG2 digital images were acquired. In all, 4 experienced echocardiographers completed detailed reporting forms evaluating chamber size, ventricular function, regional wall-motion abnormalities, and measures of valvular regurgitation and stenosis in a blinded fashion. Comparisons between the 2 interpretations were then performed and intraobserver concordance was calculated for the various categories.
RESULTS: A total of 80 paired comparisons were made. The overall concordance rate was 93.6% with most of the discrepancies being minor (4.1%). Concordance was 92.4% for left ventricle, 93.2% for right ventricle, 95.2% for regional wall-motion abnormalities, and 97.8% for valve stenosis. The mean grade of valvular regurgitation was similar for the 2 techniques.
CONCLUSIONS: MPEG2 digital imaging offers excellent concordance compared with super VHS videotape.
Предметные рубрики MeSH
Aortic Valve InsufficiencyArtificial IntelligenceEchocardiography, Doppler, ColorHeart VentriclesHumansImage Interpretation, Computer-AssistedImage Processing, Computer-AssistedMinnesotaMitral Valve InsufficiencyMotion PicturesObserver VariationSignal Processing, Computer-AssistedTricuspid Valve InsufficiencyVideotape Recording