Signal-dependent noise contributions in a voxel limit the temporal SNR (tSNR) gain brought by increasing the image SNR. The effect of retrospectively correcting for field fluctuations on the tSNR for different SNR regimes at 7T in single-shot 2D-EPI sequences was assessed using field sensor measurements. For the slice located at isocenter, results of the study show an increase of up to 20% in vivo on the grey matter region and for high SNR regimes.
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