1. Automatic 3D tracking of cardiac material markers using slice-following and harmonic-phase MRI
- Author
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Sampath, Smita and Prince, Jerry L.
- Subjects
- *
MAGNETIC resonance imaging , *MEDICAL imaging systems , *THREE-dimensional imaging , *CROSS-sectional imaging , *DIAGNOSTIC imaging - Abstract
Abstract: A method to track a grid of cardiac material points in three dimensions using slice-following (SF) tagged magnetic resonance imaging (MRI) and harmonic-phase MRI is presented. A three-dimensional grid of material points on the lines of intersections of short-axis (SA) and long-axis (LA) planes is automatically tracked by combining two-dimensional pathlines that are computed on both SA and LA image planes. This process yields the true three-dimensional motion of points originating on the image plane intersections. Experimental data from normal volunteers, each obtained in four short breath-holds using the SF harmonic phase MRI pulse sequence, is presented. A validation of two-dimensional in-plane tracks using this pulse sequence on a moving phantom is also presented. [Copyright &y& Elsevier]
- Published
- 2007
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