Tracking MR tag surfaces using a spatiotemporal filter and interpolator

Abstract

Magnetic resonance (MR) tagging is a method for visualizing cardiac motion in MR images by inducing artificial, highcontrast features that move with the tissue. To enable quantitative analysis of tagged MR images, a method for tracking the movement of tag features is required. In this article, we present a new method for tracking the deformation of planar tags applied to the left ventricle of the heart. The method generates a continuous three-dimensional reconstruction of deformed tag planes using optimal estimation theory. Tag plane movement is modeled as a time update process, where each update consists of a quadratic component that describes the bulk motion of the tag planes plus a stochastic component that characterizes the fine-scale variation in the motion. The model is used in conjunction with a novel, recursive algorithm that efficiently estimates the deformation of tag planes from time-series data. Results are shown using both simulated and actual MR images. © 1999 John Wiley & Sons, Inc. Int J Imaging Syst Technol, 10, 128–142, 1999

DOI: 10.1002/(SICI)1098-1098(1999)10:2%3C128::AID-IMA4%3E3.0.CO;2-M

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Cite this paper

@article{Kerwin1999TrackingMT, title={Tracking MR tag surfaces using a spatiotemporal filter and interpolator}, author={William S. Kerwin and Jerry L. Prince}, journal={Int. J. Imaging Systems and Technology}, year={1999}, volume={10}, pages={128-142} }