Fast, Three-Dimensional Free-Breathing MR Imaging of Myocardial Infarction: A Feasibility Study

Manojkumar Saranathan, Carlos E. Rochitte, Thomas K F Foo

Research output: Contribution to journalArticle

Abstract

Imaging delayed hyperenhancement of myocardial infarction is most commonly performed using an inversion recovery (IR) prepared 2D breathhold segmented k-space gradient echo (FGRE) sequence. Since only one slice is acquired per breathhold in this technique, 12-16 successive breathholds are required for complete anatomical coverage of the heart. This prolongs the overall scan time and may be exhausting for patients. A navigator-echo gated, free-breathing, 3D FGRE sequence is proposed that can be used to acquire a single slab covering the entire heart with high spatial resolution. The use of a new variable sampling in time (VAST) acquisition scheme enables the entire 3D volume to be acquired in 1.5-2 min, minimizing artifacts from bulk motion and diaphragmatic drift and contrast variations due to contrast media washout.

Original languageEnglish (US)
Pages (from-to)1055-1060
Number of pages6
JournalMagnetic Resonance in Medicine
Volume51
Issue number5
DOIs
StatePublished - May 2004
Externally publishedYes

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Keywords

  • Cardiac MRI
  • Delayed hyperenhancement
  • Inversion recovery
  • Myocardial infarction
  • Navigator gating

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

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