Publications by authors named "Patrick R Girard"
Med Image Anal
August 2015
Article Synopsis
- The paper introduces a motion estimation method for cardiac sequences using multidimensional analytic signals to calculate 2D spatial phases from real-value images.
- By combining two spatial phases from successive frames, the method achieves subpixel accuracy in displacement estimation and uses a local bilinear deformation model to enhance accuracy without needing preliminary filtering.
- Results from simulated MRI sequences show that this new method reduces motion estimation errors by about 33% compared to existing techniques, and analysis of in vivo data indicates distinct differences in myocardial point trajectories between pathological and normal regions.
