Artifact Suppression in Imaging of Myocardial Infarction Using B 1-Weighted Phased-Array Combined Phase-Sensitive Inversion Recovery

Peter Kellman, Christopher K. Dyke, Anthony H. Aletras, Elliot R. McVeigh, Andrew E. Arai

Research output: Contribution to journalArticle

Abstract

Regions of the body with long T1, such as cerebrospinal fluid (CSF), may create ghost artifacts on gadolinium-hyperenhanced images of myocardial infarction when inversion recovery (IR) sequences are used with a segmented acquisition. Oscillations in the transient approach to steady state for regions with long T1 may cause ghosts, with the number of ghosts being equal to the number of segments. B1-weighted phased-array combining provides an inherent degree of ghost artifact suppression because the ghost artifact is weighted less than the desired signal intensity by the coil sensitivity profiles. Example images are shown that illustrate the suppression of CSF ghost artifacts by the use of B1-weighted phased-array combining of multiple receiver coils.

Original languageEnglish (US)
Pages (from-to)408-412
Number of pages5
JournalMagnetic Resonance in Medicine
Volume51
Issue number2
DOIs
StatePublished - Feb 2004
Externally publishedYes

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Keywords

  • Artifact
  • Cerebrospinal fluid (CSF)
  • Delayed hyperenhancement
  • Heart
  • MRI
  • Myocardial infarction
  • Phase-sensitive
  • Phased array

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

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