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Abstract #3595

The Effect of Cardiac Synchronization on the Temporal Characteristics of 3D SSFP & 3D SGPR

Rob Hendrikus Tijssen1, Karla Loreen Miller1

1FMRIB Centre, Oxford University, Oxford, Oxon, United Kingdom

Recently, several groups have re-visited the potential of low-distortion sequences like 3D SSFP and SPGR sequences for high-field FMRI. This is particularly relevant for sub-cortical structures, which require high resolution to resolve small nuclei. 3D acquisitions however are susceptible to flow-induced instabilities and show reduced temporal SNR in inferior regions of the brain. Our results suggest that cardiac synchronization could significantly improve the tSNR of both SSFP and SPGR in these regions.