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Spatially varying fat‐water excitation using short 2DRF pulses
Author(s) -
Yuan Jing,
Madore Bruno,
Panych Lawrence P.
Publication year - 2010
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.22223
Subject(s) - excitation , pulse (music) , spins , pulse duration , ultrashort pulse , bandwidth limited pulse , slab , optics , physics , nuclear magnetic resonance , materials science , laser , geophysics , quantum mechanics , detector , condensed matter physics
Conventional spatial‐spectral radiofrequency pulses excite the water or the fat spins in a whole slice or slab. While such pulses prove useful in a number of applications, their applicability is severely limited in sequences with short pulse repetition time due to the relatively long duration of the pulses. In the present work, we demonstrate that, by manipulating the parameters of a two‐dimensional spartially‐selective (2DRF) pulse designed to excite a two‐dimensional spatial profile, the chemical‐shift sensitivity of the pulse can be exploited to obtain potentially useful spatially varying fat‐water excitation patterns. Magn Reson Med 63:1092–1097, 2010. © 2010 Wiley‐Liss, Inc.