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- W2374944529 abstract "Color Doppler flow convergence is a new method of flow quantitation. In the present study, we evaluated the accuracy of multiple flow convergence aliasing boundaries for quantitation of mitral regurgitation in an animal experiment. Six sheeps with surgically induced mitral regurgitation were studied. The distances from the mitral valve to the first, second and third aliasing boundaries were measured on color Doppler images and converted to the calculated flow rates by applying hemispherical flow equation. The flow rates calculated from the first, second and third aliasing boundaries correlated well with the actual regurgitant flow ratis(r=0.89—0.96). The mean percentage errors from the actual flow rates for the first, second and third aliasing boundaries were 142%, 10% and—44%, respectively. The association between aliasing velocities and calculated flow rates showed an inverse relationship, suggesting that the flow convergence boundaries in different flow convergence area have different geometries, and there is limited flow convergence area in which the geometry of aliasing boundaries fit with a hemispherical assumption." @default.
- W2374944529 created "2016-06-24" @default.
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- W2374944529 date "1993-01-01" @default.
- W2374944529 modified "2023-09-25" @default.
- W2374944529 title "A New Method of Quantitation of Mitral Regurgitation Using Color Doppler Flow Convergence" @default.
- W2374944529 hasPublicationYear "1993" @default.
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