Minimizing TE in moment-nulled or flow-encoded two- and three-dimensional gradient-echo imaging.

Matthew A Bernstein, A. Shimakawa, N. J. Pelc

Research output: Contribution to journalArticle

79 Scopus citations

Abstract

A method for minimizing field-echo delay in moment-nulled gradient-echo imaging is presented. Even though ramps are accounted for, the analysis yields simple closed-form solutions. The method is then generalized to the section-select waveform for three-dimensional volume imaging and to flow encoding for phase-contrast imaging. Three strategies for first-moment selection in phase-contrast imaging are discussed, including a new strategy that always yields the minimum echo delay. Trapezoidal and triangular gradient lobe shapes are analyzed.

Original languageEnglish (US)
Pages (from-to)583-588
Number of pages6
JournalJournal of magnetic resonance imaging : JMRI
Volume2
Issue number5
StatePublished - Sep 1992
Externally publishedYes

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

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