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Optimization of T2-selective binomial pulses for magnetization transfer

✍ Scribed by Mathilde Pachot-Clouard; Luc Darrasse

Publisher: John Wiley and Sons
Year: 1995
Tongue: English
Weight: 832 KB
Volume: 34
Category: Article
ISSN: 0740-3194
DOI: 10.1002/mrm.1910340325

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✦ Synopsis

Abstract

Accurate rules have been established to build binomial pulses up to fifth order, for selectively saturating protons at any given T~2~ with minimum power deposition. Pulse performance and sensitivity to experimental defects have been evaluated; the third order is generally found to be best suited. It is shown, by combining theory and experiment performed at 0.1 T, that matching the saturation pulse to T~2~ of the motionally restricted pool is essential to reveal exchange with free water protons. It is emphasized that, to date, lack of magnetization transfer contrast with binomial pulses is due mainly to insufficient RF level available with most MR imaging systems, especially at high magnetic field.

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