Accuracy of speckle tracking in the context of stress echocardiography in short axis view: An in vitro validation study

Amir Hodzic, Boris Chayer, Diya Wang, Jonathan Porée, Guy Cloutier, Paul Milliez, Hervé Normand, Damien Garcia, Eric Saloux and Francois Tournoux

PLOS ONE, 2018, vol. 13, issue 3, 1-11

Abstract: Aim: This study aimed to test the accuracy of a speckle tracking algorithm to assess myocardial deformation in a large range of heart rates and strain magnitudes compared to sonomicrometry. Methods and results: Using a tissue-mimicking phantom with cyclic radial deformation, radial strain derived from speckle tracking (RS-SpT) of the upper segment was assessed in short axis view by conventional echocardiography (Vivid q, GE) and post-processed with clinical software (EchoPAC, GE). RS-SpT was compared with radial strain measured simultaneously by sonomicrometers (RS-SN). Radial strain was assessed with increasing deformation rates (60 to 160 beats/min) and increasing pulsed volumes (50 to 100 ml/beat) to simulate physiological changes occurring during stress echocardiography. There was a significant correlation (R2 = 0.978, P

Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0193805

DOI: 10.1371/journal.pone.0193805

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