Table 3.

Quantification results in brain in four healthy volunteers for 15-pulse sequence. Results include volume fractions α ₁, α ₂, and α ₃, corresponding to intracellular, extracellular and CSF compartments, respectively, as well as intracellular ²³Na concentrations C ₁ for four volunteers. Results are within the ranges for the expected physiological values of ${\alpha }_1^{theory}$ ∼ 0.5–0.6, ${\alpha }_2^{theory}$ ∼ 0.2–0.3, ${\alpha }_3^{theory}\sim 1$, and $C_1^{theory}$ ∼ 10–30 mM within standard deviations. All values in the table are given as mean ± standard deviations.

Volunteer	α 1	α 2	α 3	C 1 (mM)
1	0.55 ± 0.10	0.21 ± 0.09	1.06 ± 0.21	21 ± 8
2	0.52 ± 0.14	0.26 ± 0.16	1.05 ± 0.21	32 ± 14
3	0.55 ± 0.09	0.22 ± 0.08	1.01 ± 0.16	21 ± 8
4	0.55 ± 0.10	0.23 ± 0.10	1.00 ± 0.16	19 ± 8
Average	0.54 ± 0.01	0.23 ± 0.01	1.03 ± 0.01	23 ± 3