Contrast-modified gradient echo imaging using rotary echo preparatory pulses

TitleContrast-modified gradient echo imaging using rotary echo preparatory pulses
Publication TypeJournal Article
Year of Publication1997
AuthorsZhu, XP, Chilvers PB, Hutchinson CE, Morris GA, Hawnaur JM, Adams JE, Taylor CJ
JournalMagnetic Resonance Materials in Physics Biology and Medicine
ISBN Number1352-8661
Accession NumberWOS:A1997XZ55600003

The use of on-resonance 1 (2) over bar 1 binomial composite pulses in two-or three-dimensional magnetization-prepared gradient-recalled echo magnetic resonance imaging experiments generates rotary echoes, leading to an increase in contrast range that is, in part, determined by the ratio of T-2 to T-1. In comparison with other fast gradient-recalled echo imaging techniques designed for enhanced T-2 contrast, this method is more robust with respect to radiofrequency field inhomogeneity and less sensitive with respect to motion artifacts. Three-dimensional parametric images may be calculated using least-squares fitting based on a simple model for steady-state longitudinal magnetization during the imaging sequences.