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

Smita Sampath, Jerry L. Prince

Research output: Contribution to journalArticle

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 languageEnglish (US)
Pages (from-to)197-208
Number of pages12
JournalMagnetic Resonance Imaging
Volume25
Issue number2
DOIs
StatePublished - Feb 1 2007

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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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