. Author manuscript; available in PMC: 2012 Oct 24.

Published in final edited form as: Synapse. 2012 Feb 28;66(6):471–482. doi: 10.1002/syn.21515

Table II.

Rate constants of reversibly binding radioligands estimated by mathematical modeling for healthy control participants who received intravenous injections of approximately 333 MBq (9 mCi) (−)-5-[¹²³I]iodobenzovesamicol ([¹²³I]IBVM)

Age in years	Striatal K₁	Striatal k₂	Striatal k₃	Cerebellar K₁	Cerebellar k₂	Cerebellar k₃
19	0.0196	0.0137	0.0062	0.0205	0.0489	0.0038
21	0.0233	0.0158	0.0176	0.0249	0.0348	0.0065
27	0.00097	0.0099	0.012	0.0011	0.037	0.006
28	0.0122	0.0174	0.0225	0.0121	0.0312	0.0064
34	^a	^a	^a	^a	^a	^a
44	^a	^a	^a	^a	^a	^a

Technical problems prevented meaningful estimates of the constants.