P4B-3 Displacement Estimation Using a Slant Correlation Coefficient Filter for Large Strains

In myocardial strain imaging at frame rates less than 100 Hz, large peak systolic strains can cause significant peak hopping. To reduce this effect, slant spatial filtering of correlation coefficients was applied. This method was implemented based on the spatial distribution of the correlation coefficients. Simulations using RF signals generated with large strains from 7% to 10% were implemented to verify the algorithm. Results show that peak hopping was eliminated for strains up to 8%, strongly suggesting that peak hopping can be greatly reduced using a slant correlation filter.