Correction of through-plane deformation artifacts in stimulated echo acquisition mode cardiac imaging

Ahmed S. Fahmy, Li Pan, Matthias Stuber, Nael F. Osman

Research output: Contribution to journalArticle

Abstract

Attempts to use a stimulated echo acquisition mode (STEAM) in cardiac imaging are impeded by imaging artifacts that result in signal attenuation and nulling of the cardiac tissue. In this work, we present a method to reduce this artifact by acquiring two sets of stimulated echo images with two different demodulations. The resulting two images are combined to recover the signal loss and weighted to compensate for possible deformation-dependent intensity variation. Numerical simulations were used to validate the theory. Also, the proposed correction method was applied to in vivo imaging of normal volunteers (n = 6) and animal models with induced infarction (n = 3). The results show the ability of the method to recover the lost myocardial signal and generate artifact-free black-blood cardiac images.

Original languageEnglish (US)
Pages (from-to)404-412
Number of pages9
JournalMagnetic resonance in medicine
Volume55
Issue number2
DOIs
StatePublished - Feb 2006

Keywords

  • Artifact
  • Black-blood
  • Cardiac imaging
  • Deformation
  • STEAM
  • Stimulated echo mode

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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