Single-site 123I-FP-CIT reference values from individuals with non-degenerative parkinsonism—comparison with values from healthy volunteers

EJNMMI Reports

Table 5 Linear regression analysis of DAT availability versus age, irrespective of gender

Database	Regression parameters	Caudate	Putamen	Anterior putamen	Posterior putamen	Striatum
Flash3D	Intercept	4.004 (3.78, 4.23)	4.055 (3.84, 4.27)	4.134 (3.91, 4.36)	3.942 (3.73, 4.16)	4.028 (3.81, 4.24)
	Slope	− 0.0145 (− 0.018, − 0.011)	− 0.018 (− 0.021, − 0.015)	− 0.0171 (− 0.021, − 0.013)	− 0.0194 (− 0.023, − 0.016)	− 0.0166 6 (− 0.019, − 0.013)
	2 × SE	0.83	0.80	0.86	0.80	0.80
	r²	0.22	0.32	0.27	0.36	0.27
FBP	Intercept	3.585 (3.40, 3.77)	3.434 (3.26, 3.61)	3.541 (3.35, 3.73)	3.289 (3.12, 3.46)	3.521 (3.34, 3.7)
	Slope	− 0.0151 (− 0.018, − 0.013)	− 0.0154 (− 0.018, − 0.013)	− 0.0151 (− 0.018, − 0.012)	− 0.0159 (− 0.019, − 0.013)	− 0.0152 (− 0.018, − 0.012)
	2 × SE	0.68	0.67	0.71	0.64	0.66
	r²	0.32	0.34	0.30	0.37	0.33

Values in parentheses are 95 % confidence intervals for the intercepts and slopes. FBP filtered back projection, DAT dopamine active transporter, SE standard error of regression model