Noise Suppression in Displacement Imaging Using an Adaptive Spatial Filter
Wen H, Bennett E, Honorio J, Hahn J
National Institutes of Health
In the recent development of rapid imaging techniques of myocardial wall motion such as cine-DENSE, noise in the displacement data needs to be reduced with spatial or temporal filtering. Spatial filtering is the choice in cases where the temporal resolution needs to be preserved, for example for characterizing contractile dyssynchrony. Standard low-pass filters blur anatomical boundaries and reduce transmural resolution. We designed a filter that adapts to the local wall contour and achieves the smoothing effect without loss of transmural resolution or blurring at the boundaries.