Fast water suppression for high resolution MRSI by frequency selective spokes pulses at 7T
Tessa N van de Lindt 1 , Ronald Mooiweer 2 , Peter R Luijten 2 , Dennis W J Klomp 2 , and Vincent O Boer 2
7 Tesla, UMC Utrecht, Amsterdam, Noord-Holland,
Utrecht, Utrecht, Utrecht, Netherlands
In brain MRSI, spatial resolution is limited by a
relatively low SNR because localization methods
generally require a long TR. With recent developments in
more efficient localization methods the duration of the
WS sequence has become a limiting factor in MRSI. In
this work, an ultra short WS method, by using frequency
selective spokes pulses to correct for
B1-inhomogenieties, is presented. Sufficient water
suppression over a whole slice was obtained and very
high resolution 2D MRSI spectra were acquired.
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