A scheme for obtaining strain maps from a set of MRI scans of the heart is presented. Using a technique known as the Spatial Modulation of Magnetization a set of MRI scans are generated with tag-lines distributed over the walls of the heart. As the heart moves, these tag-lines will move accordingly. Active contours or snakes are then used to extract the tag-lines from each MRI image, and the motion of the tag-lines determined. Laplacian smoothing splines are then used to estimate the displacement of points between the tag-lines. The strain experienced through out the heart is then a simple function of the associated displacement. Regional strain analysis is of vital importance in diagnosing different forms of heart disease, such as myocardial infarction or ``heart attack''. The method presented in this paper makes the analysis of cardiac strain feasible.
@article{681,
title = {Measuring cardiac strain using Laplacian smoothing splines},
journal = {ANZIAM Journal},
volume = {44},
year = {2003},
doi = {10.21914/anziamj.v44i0.681},
language = {EN},
url = {http://dml.mathdoc.fr/item/681}
}
Griffin, M. P.; Chen, F.; McMahon, K. L.; Campbell, G.; Wilson, S. J.; Rose, S. E.; Veidt, M.; Bennett, C. J.; Wegner, M.; Doddrell, D. M. Measuring cardiac strain using Laplacian smoothing splines. ANZIAM Journal, Tome 44 (2003) . doi : 10.21914/anziamj.v44i0.681. http://gdmltest.u-ga.fr/item/681/