Improving HARP Cardiac Strain Mapping Using Nonlinear Diffusion
Abd-Elmoniem K, Prince J, Parthasarathy V
Johns Hopkins University
In this work, we propose a smoothing method based on anisotropic diffusion that filters the HARP derivatives strictly within the myocardium without the need for prior segmentation. The information about tissue geometry and the strain distribution is used to restrict the smoothing to within the myocardium, thereby ensuring minimum distortion of the final strain map. Preliminary results demonstrate the ability of anisotropic diffusion to reduce artifacts and improve strain accuracy over existing methods.