Abstract #0613
Encoding chemical shift with Rabi modulated continuous wave excitation
James Korte 1 , Kelvin J. Layton 1 , Bahman Tahayori 1 , Peter M. Farrell 1 , Stephen M. Moore 1 , and Leigh A. Johnston 1
1
The University of Melbourne, Melbourne,
Victoria, Australia
The response of a spin system to Rabi modulated
continuous wave excitation has recently been shown to
achieve a substantial steady-state magnetization that
exhibits periodic orbits. We exploit this steady-state
behavior and explore off resonance effects, in two
proof-of-concept experiments and corresponding
simulations of the Bloch equation. Our experiments
confirm that harmonics of the periodic steady-state
magnetization orbits are affected by off-resonance
effects and therefore contain chemical shift
information, in agreement with predictions. We
furthermore demonstrate that chemical shift information
can be encoded in a series of CW excitations and used to
reconstruct a simple spectrum.
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