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. 2022 Jul 13;16:838692. doi: 10.3389/fnhum.2022.838692

FIGURE 8.

FIGURE 8

Relationship between QSM, β-amyloid, and longitudinal cognitive outcomes. (A) Heat map of average difference in QSM between β-amyloid positive subjects β-amyloid negative subjects. (B) Graphical representation of the impact of baseline QSM upon change of cognition, measured by cognitive composite scores of episodic memory (California Verbal Learning Test-delayed, Logical Memory Test-delayed, Rey Complex Figure Test-Long Delay). Annual rate of cognitive decline was calculated for each individual based on his or her trajectory of decline for the entire period they were included in the study. This is plotted against baseline QSM value. Baseline QSM in the hippocampus was negatively associated with annual rate of change in episodic memory in β-amyloid positive subjects (P = 9.2*10– 7), and positively associated with rate of change in β-amyloid negative subjects (P = 0.014). Figure from Ayton et al. (2017b).