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In vivo RF performance comparison between vendor 32-ch array, 7T AC/DC array, and size-matched 7T receive-only service coil. (a) Axial receive SNR maps after normalization by flip angle maps. (b) Noise correlation matrices. (c) Overlaid 1–D SNR profiles. (d) Measured inverse g-factor maps for an axial slice (retained SNR) for a variety of acceleration factors along with the mean 1/g value for each factor.
