ABSTRACT
The present paper wishes to make some progress towards improving the ability to obtain information on the fiber architecture within the heart walls thanks to the detection of the PSL. Now that fullvolume images of the heart walls can be obtained by high-resolution 3-dimensional Real Time (3DRT) speckle tracking-based motion-detecting echocardiography (STE) (in short, 3DSTE), many of the shortcomings of 2D echocardiography (as opposed to NMRI) can be overcome, to the extent that myocardium strains may be investigated noninvasively with high accuracy [1,2,3]. The same issue was treated in [4]. However, the approach followed therein for determining the strain tensor once 3DSTE data were acquired is much different; moreover, the analysis in [4] was limited to the endocardial surface, as the echocardiographic data relative to the epicardium were evaluated not adequate.
