Left ventricular volume calculation with integrated backscatter from echocardiography.

W J Stewart; S M Rodkey; S Gunawardena; R D White; B Luvisi; A L Klein; E Salcedo

doi:10.1016/s0894-7317(14)80172-7

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Left ventricular volume calculation with integrated backscatter from echocardiography.

W J Stewart·S M Rodkey·S Gunawardena·R D White·B Luvisi·A L Klein·E Salcedo

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Abstract

Integrated backscatter analysis (IB) is a new echocardiographic method for automatically differentiating tissue from blood on the basis of differences in the amplitude of reflected ultrasound. Left ventricular volume was estimated with IB by use of a modification of Pappus' theorem and a summated ellipsoid method. IB measurements correlated well with a standard biplane area-length method derived off-line from endocardial borders drawn by hand from the same echocardiographic data (y = 1.09 x - 35, r = 0.95). Integrated backscatter measurement of ventricular volume derived from six imaging planes with both the Pappus' rule and the summated ellipsoid methods correlated well with magnetic resonance imaging volume estimates (r = 0.91 and r = 0.90, respectively), whereas use of one imaging plane correlated less well (r = 0.75). Automated analysis of integrated backscatter differentiates tissue from blood sufficiently to allow accurate volume calculations compared with magnetic resonance imaging and to standard hand-drawn echo techniques. This method provides accurate measurement of left ventricular volumes that should be useful in clinical hemodynamic assessments.

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Adolescent Adult Aged Echocardiography Heart Diseases Heart Ventricles Humans Magnetic Resonance Imaging Middle Aged Models, Theoretical Signal Processing, Computer-Assisted Journal Article

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W J Stewart, S M Rodkey, S Gunawardena, R D White, B Luvisi, A L Klein, E Salcedo. Left ventricular volume calculation with integrated backscatter from echocardiography.. https://doi.org/10.1016/s0894-7317(14)80172-7

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