Key result
Combining shape tracking and speckle tracking using adaptive radial basis functions improved radial strain value accuracy compared to either method alone in three normal canines.
Why the study?
Does a combined method of shape and speckle tracking improve the accuracy of radial strain values compared to either method alone in normal canines?
Does a combined method of shape and speckle tracking improve the accuracy of radial strain values compared to either method alone in normal canines?
Combining shape tracking and speckle tracking improves the accuracy of left ventricular deformation analysis in echocardiography.
Answers are grounded in this paper and cite their sources.
Hypothesis-generating in normal canines; leaves open translation to human echocardiography.
Left ventricular (LV) deformation analysis can provide valuable information about cardiac function. Echocardiography is a non-invasive method for imaging the motion of the heart. Two methods that have been used for quantitative deformation analysis in echocardiography are shape tracking and speckle tracking. Shape tracking provides good displacement values on the boundaries of the myocardium, while speckle tracking provides more accurate tracking across the myocardium. Combining these two complementary sources of information can provide more accurate displacement values over the entire myocardium. These methods combine the two information sources using adaptive radial basis functions over multiple frames. Ultrasound data was acquired on three normal canines. Radial strain values were compared between the shape tracking, speckle tracking, and combined methods to show improvement when using both sources of information. Strain values were calculated from MR tagged data for comparison.
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Compas et al. (2011) studied Normal cardiac function (n=3). Combined shape and speckle tracking vs. Shape tracking and speckle tracking alone was evaluated on Radial strain values compared to MR tagged data. Combining shape tracking and speckle tracking using adaptive radial basis functions improved radial strain value accuracy compared to either method alone in three normal canines.
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