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Two‐dimensional selective adiabatic pulses
Author(s) -
Conolly Steven,
Pauly John,
Nishimura Dwight,
Macovsiu Albert
Publication year - 1992
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.1910240211
Subject(s) - adiabatic process , excitation , pulse (music) , physics , magnetization , dimension (graph theory) , nuclear magnetic resonance , optics , atomic physics , magnetic field , mathematics , quantum mechanics , detector , pure mathematics
Using the technique of separable k ‐space excitation, we have designed a two‐dimensional selective adiabatic pulse that inverts magnetization from a square region in the xy plane with insensitivity to RF variations. We also have designed a two‐dimensional adiabatic pulse that inverts selectively in frequency and in one spatial dimension. The pulses should be useful for both MR imaging and spectroscopy. We present experimental results to demonstrate that the two‐dimensional adiabatic pulses are feasible on commercial MR imaging systems. © 1992 Academic Press, Inc.