Baseline ratio | Follow up ratio | Relative change | |
---|---|---|---|
Values are mean (SD). | |||
The relative change in [123I]β-CIT binding ratios within one year was calculated using the formula: [follow up SPECT imaging minus baseline SPECT imaging]/[baseline SPECT imaging] × 100%See end of article for authors’ affiliations [mean follow up SPECT imaging] − [mean baseline SPECT imaging]/[mean baseline SPECT imaging] ×100%. | |||
*Significant relative difference between the mean values of two imaging assessments (paired samples two tailed t test; p < 0.05). | |||
Striatum, whole | 2.6 (0.7) | 2.4 (0.7) | −7.6 (17.9)* |
Putamen, whole | 2.1 (0.6) | 1.9 (0.5) | −8.4 (18.6)* |
Caudate, whole | 3.9 (1.0) | 3.7 (1.1) | −4.5 (21.3) |
Striatum, ipsilateral | 2.9 (0.8) | 2.6 (0.8) | −7.5 (17.6)* |
Striatum, contralateral | 2.3 (0.6) | 2.1 (0.7) | −7.1 (20.7)* |
Putamen, ipsilateral | 2.4 (0.7) | 2.2 (0.7) | −8.0 (17.9)* |
Putamen, contralateral | 1.7 (0.5) | 1.6 (0.5) | −7.9 (25.2)* |
Caudate, ipsilateral | 4.2 (1.1) | 4.0 (1.2) | −4.4 (21.2) |
Caudate, contralateral | 3.6 (1.0) | 3.4 (1.1) | −4.5 (22.8) |