Feasibility, reproducibility, and agreement between different speckle tracking echocardiographic techniques for the assessment of longitudinal deformation

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Abstract

Background. Left ventricular (LV) longitudinal deformation can be assessed with new echocardiographic techniques like triplane echocardiography (3PE) and four-dimensional echocardiography (4DE). We aimed to assess the feasibility, reproducibility, and agreement between these different speckle-tracking techniques for the assessment of longitudinal deformation. Methods . 101 consecutive subjects underwent echocardiographic examination. 2D cine loops from the apical views, a triplane view, and an LV 4D full volume were acquired in all subjects. LV longitudinal strain was obtained for each imaging modality. Results . 2DE analysis of LV strain was feasible in 90/101 subjects, 3PE strain in 89/101, and 4DE strain in 90/101. The mean value of 2DE and 3PE longitudinal strains was significantly higher with respect to 4DE. The relationship between 2DE and 3PE derived strains ( r=0.782 ) was significantly higher ( z=3.72 , P<0.001 ) than that between 2DE and 4DE ( r=0.429 ) and that between 3PE and 4DE ( r=0.510 ; z=3.09 , P=0.001 ). The mean bias between 2DE and 4DE strains was -6.61±7.31% while -6.42±6.81% between 3PE and 4DE strains; the bias between 2DE and 3PE strain was of 0.21±4.16% . Intraobserver and interobserver variabilities were acceptable among the techniques. Conclusions . Echocardiographic techniques for the assessment of longitudinal deformation are not interchangeable, and further studies are needed to assess specific reference values.

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Buccheri, S., Monte, I., Mangiafico, S., Bottari, V., Leggio, S., & Tamburino, C. (2013). Feasibility, reproducibility, and agreement between different speckle tracking echocardiographic techniques for the assessment of longitudinal deformation. BioMed Research International, 2013. https://doi.org/10.1155/2013/297895

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