Table 1.

Comparison of T₁, the exchange rate (k_sw), and the relative labile proton ratio (fr) of amide protons before and after global ischemia (N = 6). k_sw and fr values reported were from both omega plot on APT decoupled from globally averaged Z-spectrum and from IDEAL-based omega plot analysis on APT maps fitted using the IDEAL approach. Given a strong correlation between T₁ and water content, the contribution of change in water proton towards f_r has been normalized by T₁. Mean ± standard deviation values were shown. Student’s t-tests were performed between live and postmortem conditions in the same brains with p values <0.05 denotes a statistically significant difference.

	Live		Postmortem		P-value
T1 [s]	1.56 ± 0.012		1.65 ± 0.058		0.007
	Globally averaged APT	IDEAL fitted APT	Globally averaged APT	IDEAL fitted APT	Globally averaged APT	IDEAL fitted APT
ksw [s−1]	29.6 ± 5.6	29.9 ± 14.2	12.1 ± 1.3	11.2 ± 1.3	<0.001	0.009
fr × 10−3	2.42 ± 0.35	2.50 ± 0.30	2.02 ± 0.34	1.90 ± 0.40	0.074	0.034