. Author manuscript; available in PMC: 2018 Jul 7.

Published in final edited form as: Phys Med Biol. 2017 May 15;62(13):5344–5364. doi: 10.1088/1361-6560/aa731f

Table 5.

Summary of regional K₁ and V_T values from [¹¹C]AFM dataset in the frontal lobe at iteration 2 for each count level. Mean and median are computed within region from the mean image across replicates.

		[¹¹C]AFM K₁			[¹¹C]AFM V_T

		Mean	Median	%CoV	Mean	Median	%CoV
100% Counts	Indirect	0.45	0.45	–	14.8	14.5	–
	Direct	0.44	0.44	–	15.9	15.6	–

20% Counts	Indirect	0.46	0.46	17	26.1	15.0	19
	Direct	0.44	0.44	9	15.9	15.6	10

10% Counts	Indirect	0.47	0.46	24	62.5	15.6	33
	Direct	0.45	0.44	13	16.0	15.7	14

5% Counts	Indirect	0.48	0.47	32	125	16.3	49
	Direct	0.45	0.45	18	16.1	15.8	21