Abstract #4389
Quantification of imperfect phase cycling in multi-band imaging: mathematical model and proof of principle
Alessandro Sbrizzi 1 , Bjorn Stemkens 2 , Sjoerd Crijns 2 , Cornelis A van den Berg 2 , Jan J Lagendijk 2 , Peter R Luijten 2 , Rob Tijssen 2 , and Anna Andreychenko 2
1
UMC Utrecht, Utrecht, NL, Netherlands,
2
UMC
Utrecht, Utrecht, Netherlands
Multi-band based imaging techniques require phase
cycling between the different slices when the
sensitivity maps are not sufficiently distinct. The
phase cycling has the effect of shifting the image by a
fraction of the FOV. The phase difference is therefore
fundamental for the successful application of this kind
of techniques. In previous studies, the negative effect
of signal leakage and cross talk between simultaneously
excited slices has been shown. In this work, we show
that inter-slice leakage can be partially caused by an
imperfect phase cycling and we derive a mathematical
model to quantify it. Based on the model, correction of
imperfect phase cycling could be done.
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