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Abstract #4216

Averaged-BOSS: feasibility study and preliminary results

Zahra Shams 1 and Abbas N Moghaddam 1,2

1 BME, Tehran Polytechnic, Tehran, Tehran, Iran, 2 School of Cognitive Sciences, Institute for Studies in Theoretical Physics and Mathematics, Tehran, Iran

In this work, we presented a new method for fMRI, termed Averaged BOSS (A-BOSS), in which the idea of phase transition is employed without the undesirable limited spatial coverage. The implementation of the proposed method involved compacting SSFP profile with a profile period at the order of pixel size, resulted in averaging the effect of frequency shift on the magnetization everywhere with no need for careful shimming. The analysis of experimental results highlighted the area of activity that was in accordance with BOLD activation map. In conclusion, A-BOSS overcomes BOSS limitations, creating considerably high signal level in comparison with BOLD.

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