Abstract #2398
Optimized Amplitude Modulated Multi-Band RF pulses
Shaihan J Malik 1,2 , Anthony N Price 2 , and Joseph V Hajnal 1,2
1
Division of Imaging Sciences and Biomedical
Engineering, Kings College London, London, London,
United Kingdom,
2
Centre
for the Developing Brain, Kings College London, London,
United Kingdom
The modulation required to produce multi-band RF pulses
can lead to unacceptably high peak RF power. This can be
alleviated by optimising the phase of each
simultaneously excited slice. The result is typically a
rapid amplitude and phase modulation. Faithful
reproduction of rapid phase modulation can be error
prone, especially on systems requiring frequency
modulation to be defined by the pulse designer. These
issues can be sidestepped if pulses are amplitude
modulated (AM) only; here we identify optimal slice
phases that reduce peak RF power using strictly AM MB
pulses and compare them with the more general solutions.
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