Abstract #3852

Independent band-specific correction for B0 and B1 inhomogeneities in multiband 2D RF pulses

Yuxin Hu^1,2, Valentina Taviani³, Bruce L. Daniel¹, and Brian A. Hargreaves¹

¹Department of Radiology, Stanford University, Stanford, CA, United States, ²Department of Electrical Engineering, Stanford University, Stanford, CA, United States, ³GE Healthcare, Menlo Park, CA, United States

2D in-plane multiband RF pulses have been developed to offer high-resolution diffusion-weighted imaging (DWI) with minimal distortion. However, B0 and B1 inhomogeneities may lead to significant and varying signal loss in different bands, that can in turn result in signal inconsistency between bands. In this work, correction for B0 and B1 variations was implemented by independently tuning the RF center frequency and amplitude for each band. Phantom images acquired with corrected pulses were shown to have higher signal amplitude and reduced slab boundary artifacts.

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