Automatic 3D tracking of cardiac material markers using slice-following and harmonic-phase MRI

Smita Sampath; Jerry L. Prince

doi:10.1016/j.mri.2006.09.033

Automatic 3D tracking of cardiac material markers using slice-following and harmonic-phase MRI

Smita Sampath, Jerry L. Prince

Whiting School of Engineering

Research output: Contribution to journal › Article › peer-review

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.

Original language	English (US)
Pages (from-to)	197-208
Number of pages	12
Journal	Magnetic Resonance Imaging
Volume	25
Issue number	2
DOIs	https://doi.org/10.1016/j.mri.2006.09.033
State	Published - Feb 2007

Keywords

Cardiac motion
Cardiac strain
HARP
Magnetic resonance tagging
Slice-following

ASJC Scopus subject areas

Biophysics
Biomedical Engineering
Radiology Nuclear Medicine and imaging

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AB - 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.

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KW - Cardiac strain

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KW - Magnetic resonance tagging

KW - Slice-following

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Automatic 3D tracking of cardiac material markers using slice-following and harmonic-phase MRI

Abstract

Keywords

ASJC Scopus subject areas

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