Table 2.

Association between MRS metabolite ratios and PIB retention and T807 SUVR in the whole sample of participants.

	Global PIB Retention		Global T807 SUVR
	r	p	r	p
NAA/Cr	−0.47 *	<0.001	−0.51 *	<0.001
mI/Cr	0.39 *	0.001	0.47 *	<0.001

* Correlation is considered significant at the 0.05 level (2-tailed). PIB: ¹¹C-Pittsburgh compound B tracer; T807: ¹⁸F-flortaucipir tracer; SUVR: standardized uptake value ratio.