Gerda Bjork Grimnisdottir1, Natalia
Petridou1,2, Richard Bowtell1
1Sir Peter Mansfield MR
Centre, Physics & Astronomy, the University of Nottingham, Nottingham, Nottinghamshire,
United Kingdom; 2UMC, Utrecht, Netherlands
The performance of (fast echo-shifted multi-slice) ES-MS EPI and conventional GE-EPI (short/long TR) is compared in fMRI during median nerve stimulation at 7T. Active voxels were found to be more numerous in short TR (0.33s) ES-MS-EPI data, compared with data acquired using standard GE EPI with a long (2s) TR. The tSNR values are similar for all the short TR scans, when the different echo and repetition times are accounted for. ES-MS-EPI enables scanning with more coverage than GE-EPI of the same TR and spatial resolution. Higher temporal resolution facilitates the capture