The combination of a quadratic phase sequence with balanced gradients leads to an oscillating steady state (OSS) MRI signal with an average signal amplitude that is 2-3 times the Ernst angle GRE imaging. With signal phase varies with off-resonance making the resultant signal T2*-weighted and thus, suitable for BOLD fMRI. In this work, simulations of changes to the tissue T2*, as seen in fMRI, are carried out for OSS and compared to GRE. The OSS method is compared to GRE for high-resolution fMRI studies, demonstrating substantially higher activation counts as well as temporal SNR (tSNR).
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