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Updated: Feb 15, 2026

Transthoracic Speckle Tracking Echocardiography for the Quantitative Assessment of Left Ventricular Myocardial Deformation
Published on: October 20, 2016
Two-dimensional speckle tracking echocardiography in calves: feasibility and repeatability study
1Clinical Department of Companion Animals and Equids, Faculty of Veterinary Medicine, University of Liege, Quartier Vallée 2 B41, Avenue de Cureghem 5A-5D, 4000 Liège, Belgium.
Objectives:
To assess the feasibility and repeatability of two-dimensional speckle tracking echocardiography for the evaluation of left ventricular function in healthy calves.
Animals:
12 Holstein calves, 62 ± 11.6 days old; 75.25 ± 5.4 Kg.
Methods:
Observational study. Right parasternal short-axis views at papillary muscle level were recorded in standing calves and subsequently analyzed by two-dimensional speckle tracking for global and regional radial and circumferential strains and strain rates and radial displacement. Echocardiographic examinations were performed by 2 observers to evaluate intra- and interobserver repeatability and variability.
Results:
Two-dimensional speckle tracking was feasible in all calves. Automated tracking was better in systole than in diastole. Repeatability of the technique was good in calves. Systolic radial strain and strain rate peak values showed little variability compared with systolic circumferential strain and strain rate and to all diastolic measurements. Variability of the interobserver measurements was greater than the intraobserver measurements.
Conclusions:
Two-dimensional speckle tracking is feasible in calves. As in other species, evaluation of systolic radial left ventricular function is more reliable than circumferential and diastolic left ventricular function.
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