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- W2347674310 abstract "Objective To investigate the influence of the Doppler frequency shift signals produced by cardiac motion on the velocity-time integral(VTI) and the value of stroke volume(SV) and the correction method.Methods The velocity-time integral(VTIc) of Doppler frequency shift by cardiac motion and the Doppler blood flow spectrum velocity-time integral(VTIb) at aortic valve in apical five-chamber view were measured in 38 health adults and the SV of before and after rectified by cardiac-motion(SVb,SVb+c) was calculated and compared with the SVs by Simpson′s formula.Results VTIc accounted for VTIb((16.8)±(3.4))%.Correlation analysis of SVb,SVb+c and SVs respectively,r was(0.74) and(0.80);P(0.001) by two correlation coefficient t test.Conclusions The VTI of Doppler blood flow spectrum recording in screen has an error compared with the real VTI through the aortic valve annulus. The SV calculated by VTIb+c(after cardiac-motion rectified) is more accurate than that before rectified by Doppler′s methods." @default.
- W2347674310 created "2016-06-24" @default.
- W2347674310 creator A5031781888 @default.
- W2347674310 date "2005-01-01" @default.
- W2347674310 modified "2023-09-24" @default.
- W2347674310 title "Influence of cardiac motion on the value of the stroke volume obtained with Doppler method and correction method" @default.
- W2347674310 hasPublicationYear "2005" @default.
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