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Correlation and Bland–Altman plots of MR-based global MBF vs PET-based global MBF at rest (A, B) and at stress (C, D). The solid lines in A and C are lines of identity. The solid lines in B and D indicate the mean differences (bias), whereas the dashed lines show the limits of agreement. Bias (limits of agreement) in B are − 0.05 (− 0.76 to 0.67) and in D 0.06 (− 1.58 to 1.71)
