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. 2016 Sep 13;45(3):692–699. doi: 10.1002/jmri.25442

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© 2016 The Authors Journal of Magnetic Resonance Imaging published by Wiley Periodicals, Inc. on behalf of International Society for Magnetic Resonance in Medicine

This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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Agreement of CBF measurements. (a) Correlation between global cerebral blood flow (CBF) measured by ¹⁵O‐H₂O PET and phase‐contrast mapping (PCM) MRI. (b) Bland–Altman plot showing difference against mean of the methods. Measurement by PCM MRI resulted in higher values compared to ¹⁵O‐H₂O PET. The positive slope of the regression line of the Bland–Altman plot was significantly different from zero (P = 0.0014), indicating a perfusion‐dependent relative difference between CBF values obtained by the two methods.