Comparison of cardiac motion fields from tagged and untagged MR images using nonrigid registration

Authors:
Raghavendra Chandrashekara;Raad H. Mohiaddin;Daniel Rueckert
Affiliations:
Visual Information Processing Group, Department of Computing, Imperial College, London, UK;Cardiovascular Magnetic Resonance Unit, Royal Brompton and Harefield NHS Trust, London, UK;Visual Information Processing Group, Department of Computing, Imperial College, London, UK
Venue:
FIMH'05 Proceedings of the Third international conference on Functional Imaging and Modeling of the Heart
Year:
2005

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Abstract

This paper presents a comparison of the motion fields computed from TrueFISP untagged and SPAMM tagged magnetic resonance (MR) images using a 4D nonrigid registration algorithm that we have developed for cardiac motion tracking [3]. Our results, which were obtained from a group of 7 normal volunteers, indicate that although there is a good correlation between the motion fields computed from the tagged and untagged MR images, some of the twisting motion is not captured in the motion fields derived from the TrueFISP MR images.