A recursive filter for phase velocity assisted shape-based tracking of cardiac non-rigid motion
- 19 November 2002
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 653-658
- https://doi.org/10.1109/iccv.1995.466876
Abstract
A framework for tracking pointwise periodic non-rigid motion of the heart's left ventricular (LV) wall is presented which incorporates information from two different magnetic resonance imaging (MRI) techniques. New developments in phase-contrast cine MR imaging have produced spatial maps of instantaneous velocity that heave proven accuracy within the myocardium, or wall, of the heart. This information is combined with shape-based matching techniques to provide improved estimates of trajectories, especially in regions where shape information is limited. These raw trajectories act as input to a recursive least squares (RLS) filter which applies the constraints of temporal periodicity and spatial smoothness for the final estimate. The results of the RLS filter are compared with the motion of actual implanted markers. Comparisons are also made between exclusively shape-based filtered and phase-contrast enhanced trajectory estimates using both phantom and actual canine heart MR images.<>Keywords
This publication has 8 references indexed in Scilit:
- Non-rigid motion and structure from contourPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Analysis of cardiac motion with recursive comb filteringPublished by SPIE-Intl Soc Optical Eng ,1994
- Development and evaluation of tracking algorithms for cardiac wall motion analysis using phase velocity MR imagingMagnetic Resonance in Medicine, 1994
- Determining cardiac velocity fields and intraventricular pressure distribution from a sequence of ultrafast CT cardiac imagesIEEE Transactions on Medical Imaging, 1994
- A computational framework and an algorithm for the measurement of visual motionInternational Journal of Computer Vision, 1989
- Adaptive comb filtering for harmonic signal enhancementIEEE Transactions on Acoustics, Speech, and Signal Processing, 1986
- Direct Cardiac NMR Imaging of Heart Wall and Blood Flow VelocityJournal of Computer Assisted Tomography, 1984
- Spectrum analysis—A modern perspectiveProceedings of the IEEE, 1981