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Correlation (A) and Bland–Altman plots (B) of MR-based global MBF vs PET-based global MBF at rest and stress. The solid line in A is line of identity. The solid lines in B indicate the mean difference (bias), whereas the dashed lines show the limits of agreement). Bias (limits of agreement) in b is 0.01 (− 1.24 to 1.25)
