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Abstract #3612

Comparison of fMRI with Accelerated Variable Density Spiral & EPI

Wei Lin1, Enrico Simonotto1, Feng Huang1, Charles Saylor1, George R. Duensing1, Arne Reykowski1

1Invivo Corporation, Philips Healthcare, Gainesville, FL, United States

A recently proposed rapid k-space-based parallel imaging method for variable-density (VD) spiral, Generalized GRAPPA for wider spiral bands (GROWL) is applied to fMRI. When compared with standard EPI images acquired with identical scan parameters, VD spiral-in images shows significantly less signal dropout in the frontal orbital region. A second potential advantage is to achieve higher temporal/spatial resolution and larger volume coverage with highly undersampled VD spiral trajectories.