TABLE 2.

Pearson Correlation and ICC Analysis for SUVR of Internal ¹⁸F-FDG PET Dataset (n = 65) Relative to FreeSurfer Approach

	SPM with MRI				SPM without MRI				Proposed
Region	Slope	y-intercept	R²	ICC	Slope	y-intercept	R²	ICC	Slope	y-intercept	R²	ICC
Cerebral cortex	1.074	−0.166	0.835	0.768	0.872	0.079	0.886	0.743	1.011	−0.043	0.962	0.955
Frontal	1.057	−0.161	0.819	0.764	0.873	0.055	0.895	0.690	1.016	−0.043	0.958	0.968
Parietal	1.040	−0.188	0.782	0.519	0.855	0.109	0.829	0.768	0.957	0.000	0.931	0.885
Temporal	1.097	−0.126	0.816	0.878	0.855	0.112	0.882	0.829	1.006	−0.018	0.959	0.974
Occipital	0.901	0.018	0.716	0.610	0.727	0.277	0.820	0.752	0.932	0.052	0.941	0.936
Subcortex	1.069	−0.052	0.763	0.841	0.896	−0.017	0.855	0.491	0.966	0.027	0.922	0.956