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Table 2: The mean and SD for all subjects of the position of highest value density for white matter and gray matter observed in the 2D histograms^{^a}
WM GM Intercept Slope
R₁ 1.47 ± 0.08 s⁻¹ 1.27 ± 0.09 s⁻¹ 1.24 s⁻¹ 0.030 s⁻¹/%
R₂ 12.55 ± 1.25 s⁻¹ 12.11 ± 1.08 s⁻¹ 12.06 s⁻¹ 0.066 s⁻¹/%
PD 52.01% ± 2.98% 71.36% ± 3.95% 73.46% −2.85 %/%
Myelin 30.98% ± 3.77% 4.84% ± 2.30% 2.01% 3.84 %/%
LFB 7.54% ± 2.06% 0.74% ± 0.65% – –
↵a Added are the derived slopes and intercepts when using the positions of R₁, R₂, PD, and myelin as a function of the position of LFB.

	WM	GM	Intercept	Slope
R₁	1.47 ± 0.08 s⁻¹	1.27 ± 0.09 s⁻¹	1.24 s⁻¹	0.030 s⁻¹/%
R₂	12.55 ± 1.25 s⁻¹	12.11 ± 1.08 s⁻¹	12.06 s⁻¹	0.066 s⁻¹/%
PD	52.01% ± 2.98%	71.36% ± 3.95%	73.46%	−2.85 %/%
Myelin	30.98% ± 3.77%	4.84% ± 2.30%	2.01%	3.84 %/%
LFB	7.54% ± 2.06%	0.74% ± 0.65%	–	–