We propose a new simultaneous B0 and B1 correction for Chemical Exchange Saturation Transfer imaging. This method undersamples the number of offsets on the B1 and B0 plane. The CEST map's mean error almost halved at the upper brain region compared with the conventional method and the minimal sampled B0/B1 correction method. The proposed method provides an efficient B0 and B1 correction and may improve the diagnostic accuracy using CEST imaging at 3T.
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