Key result
Simpson algorithm outperforms linear 2D echocardiographic methods for calculating ventricular volumes in preclinical model.
Why the study?
Accurate calculation of end-systolic and end-diastolic volumes and systolic indices of Halobatrachus didactylus ventricles using noninvasive echocardiographic methods was needed.
The Simpson algorithm is the optimal method for calculating ventricular volumes from 2D echocardiography in the toadfish model, enabling noninvasive cardiovascular assessment in comparative biology.
Echocardiography enables accurate ventricular volumetry in toadfish; leaves open method validation across species for comparative cardiac research.
The purpose of this work is to calculate end-systolic and end-diastolic volumes of Halobatrachus didactylus ventricles, from two-dimensional (2D) echocardiographic images, comparing four different linear methods, and to derive systolic indices of ventricular function-fractional shortening, ejection fraction, stroke volume, and cardiac output independent of the Fick principle. Echocardiography provided high resolution images of cardiac structures and allowed accurate linear measurements. The Simpson algorithm proved to be the best method of calculating ventricle volumes. As a corollary, ventricular mass can be derived from echocardiographic volume data. This noninvasive method promises wide utilization in experimental comparative cardiovascular biology.
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Coucelo et al. (2000) studied Halobatrachus didactylus (fish) cardiovascular biology. Simpson algorithm for 2D echocardiography vs. other linear methods was evaluated on Calculation of ventricle volumes. The Simpson algorithm was the best method for calculating ventricle volumes from 2D echocardiographic images in Halobatrachus didactylus compared to other linear methods.
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