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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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