TABLE V.

Test–retest reliability (ICC) and variability of BP estimated by MRTM2 with volume of interest method

	ICC			Variability (%)
Region	240 min	300 min	% difference	240 min	300 min	% difference
Striatum	0.98	0.96	2.1	6.3 ± 4.4	6.6 ± 4.7	−4.5
Prefrontal cortex	0.98	0.98	0.0	4.6 ± 4.3	5.0 ± 3.9	−8.0
Temporal cortex	0.98	0.98	0.0	4.4 ± 4.3	4.9 ± 3.4	−10.2
Parietal cortex	0.96	0.97	−1.0	5.8 ± 4.1	5.9 ± 3.8	−1.7
Occipital cortex	0.94	0.96	−2.1	5.7 ± 4.4	6.2 ± 2.5	−8.1
Thalamus	0.95	0.94	1.1	6.5 ± 7.1	7.2 ± 7.3	−9.7

ICC, intraclass correlation coefficient; Variability = 100 × ∣retest − test∣/((retest+test)/2); % difference = 100 × (values for 240 min/values for 300 min).