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Cardiac Motion Simulator for Tagged MRI (1996)
| Venue: | Proceedings of MMBIA |
| Citations: | 20 - 5 self |
BibTeX
@INPROCEEDINGS{Waks96cardiacmotion,
author = {Edo Waks and Jerry L. Prince and Andrew S. Douglas},
title = {Cardiac Motion Simulator for Tagged MRI},
booktitle = {Proceedings of MMBIA},
year = {1996},
pages = {182--191}
}
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Abstract
This paper describes a computational simulator for use in cardiac imaging using tagged magnetic resonance imaging. The simulator incorporates a 13-parameter model of left-ventricular motion due to Arts et al. (1992) and applies it to a confocal prolate spherical shell, resembling the shape of the left ventricle. Using parameters determined in other work, our model can be made to assume a configuration representing one of 60 phases in the cardiac cycle. In this paper, we determine the inverse motion map analytically, allowing pointwise correspondences to be made between two points at any two times. Using this mathematical relationship, we simulate the (tagged) magnetic resonance imaging process using a standard (tagged) spin-echo imaging equation. Image sequences can be synthesized at arbitrary orientations at any phase. We currently synthesize a SPAMM tag pattern with arbitrary spatial frequency, but other patterns can be readily incorporated. To accommodate two-dimensional motion esti...
Keyphrases
tagged mri cardiac motion simulator confocal prolate spherical shell two-dimensional motion esti spamm tag pattern arbitrary orientation 13-parameter model spin-echo imaging equation cardiac imaging magnetic resonance imaging process left ventricle arbitrary spatial frequency cardiac cycle left-ventricular motion image sequence pointwise correspondence magnetic resonance imaging mathematical relationship inverse motion map computational simulator
