Analysis of localized quadratic encoding and reconstruction

Research output: Contribution to journalArticle

34 Scopus citations

Abstract

Localized quadratic (LQ) encoding is a method of collecting multislice MRI data sets with greatly overlapping excited slices in such a way that the slice overlap can be deconvolved. This results in reconstructed data with resolution equal to the center-to-center slice spacing, regardless of the amount of excited slice overlap. LQ encoding is analyzed using the modulation transfer function of the encoding and reconstruction process. This allows analysis of many aspects of the technique in a well established theoretical framework. Many different characteristics of the method are explored, including excited slice profiles, required RF magnitudes and specific absorption rate, signal to noise ratio, signal dynamic range, reconstruction artifacts, sensitivity to motion, saturation and inflow effects, modulation transfer function shifting, and off-resonance artifacts. It is suggested that this technique is best suited for applications currently using multiple thin- slab three-dimensional encoding.

Original languageEnglish (US)
Pages (from-to)137-146
Number of pages10
JournalMagnetic Resonance in Medicine
Volume36
Issue number1
DOIs
StatePublished - Jul 1996

Keywords

  • angiography
  • chirp pulses
  • frequency modulated
  • magnetic resonance imaging

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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