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. Author manuscript; available in PMC: 2021 Jun 8.
Published in final edited form as: Neuroimage. 2021 Jan 29;230:117807. doi: 10.1016/j.neuroimage.2021.117807

Fig. 5. Gray versus white matter.

Fig. 5.

Plots of gray-to-white matter CBF (A) and gray-to-white ATT (B) are shown here for each age quartile. The ratio of gray-to-white matter CBF generally decreases with age (p < 0.001) until the 4th quartile in which there is more variability. The ratio of gray-to-white matter ATT generally increases with age (p < 0.001).