Table 2.

Average ± SD of the relative MAE and ME between the ¹⁸F-FDG and ¹⁸F-florbetapir PETs corrected with the CT-based μ-maps and the PETs corrected with the synthetic μ-maps in 7 ROIs: the reference region used for normalisation, the brain region, angular gyrus (AG), superior frontal gyrus (SFG), posterior cingulate gyrus (PCG), fusiform gyrus (FG) and anterior cingulate gyrus (ACG)

			pCTSPM	pCTT1	pCTT2	npCTT1	npCTT2	npCTT1,T2
FDG	Ref	rMAE (%)	2.38 ± 1.12	1.88 ± 0.71	1.81 ± 0.75	1.79 ± 0.64	1.72 ± 0.62	1.64 ± 0.60
		rME (%)	0.65 ± 2.04	−0.40 ± 1.26	−0.14 ± 1.16	−0.12 ± 1.37	0.09 ± 1.23	-0.15 ± 1.21
	Brain	rMAE (%)	2.76 ± 1.13	2.25 ± 0.75	2.09 ± 0.72	1.96 ± 0.56	1.85 ± 0.64	1.71 ± 0.62
		rME (%)	−0.51 ± 1.61	0.46 ± 1.06	0.41 ± 0.58	0.58 ± 0.97	0.54 ± 1.08	0.56 ± 0.98
	AG	rMAE (%)	2.93 ± 1.60	2.99 ± 2.36	2.48 ± 1.54	2.79 ± 1.91	2.32 ± 1.45	2.10 ± 1.41
		rME(%)	−0.84 ± 2.95	1.83 ± 3.09	1.37 ± 2.46	1.58 ± 2.69	1.17 ± 2.33	0.98 ± 2.17
	SFG	rMAE (%)	3.63 ± 3.04	2.16 ± 1.26	1.72 ± 1.07	2.01 ± 1.17	1.66 ± 1.02	1.53 ± 1.01
		rME (%)	−0.37 ± 3.49	0.61 ± 2.10	0.90 ± 1.65	0.38 ± 1.95	0.69 ± 1.65	0.57 ± 1.58
	PCG	rMAE (%)	1.56 ± 1.09	1.21 ± 0.85	1.14 ± 0.79	1.11 ± 0.73	1.10 ± 0.74	1.06 ± 0.74
		rME (%)	−0.62 ± 1.79	0.74 ± 1.24	0.59 ± 1.23	0.50 ± 1.19	0.41 ± 1.24	0.44 ± 1.20
	FG	rMAE (%)	2.23 ± 1.09	1.87 ± 0.59	1.91 ± 0.63	1.83 ± 0.56	1.84 ± 0.63	1.68 ± 0.57
		rME (%)	−0.59 ± 1.85	0.78 ± 1.17	0.40 ± 1.31	0.71 ± 1.17	0.38 ± 1.27	0.55 ± 1.12
	ACG	rMAE (%)	1.57 ± 1.01	1.23 ± 0.70	1.08 ± 0.75	1.14 ± 0.60	1.09 ± 0.69	1.05 ± 0.66
		rME (%)	−0.49 ± 1.76	0.64 ± 1.19	0.49 ± 1.16	0.36 ± 1.18	0.27 ± 1.21	0.39 ± 1.14
Florbetapir	Ref	rMAE (%)	2.73 ± 0.62	2.74 ± 0.95	2.77 ± 1.09	2.02 ± 0.59	2.11 ± 0.74	1.93 ± 0.62
		rME (%)	−0.74 ± 1.51	−1.05 ± 1.24	−0.95 ± 1.48	0.42 ± 1.21	0.50 ± 1.36	0.39 ± 1.20
	Brain	rMAE (%)	2.76 ± 1.13	2.56 ± 1.17	2.38 ± 1.14	1.87 ± 0.39	1.74 ± 0.48	1.60 ± 0.41
		rME (%)	0.94 ± 1.45	1.27 ± 1.49	1.24 ± 1.40	0.04 ± 0.92	0.02 ± 0.99	−0.02 ± 0.87
	AG	rMAE (%)	2.82 ± 1.54	3.32 ± 2.43	2.48 ± 1.64	2.67 ± 1.43	1.90 ± 1.05	1.82 ± 0.94
		rME (%)	0.76 ± 2.85	2.16 ± 3.25	1.71 ± 2.28	0.68 ± 2.53	0.27 ± 1.91	0.06 ± 1.77
	SFG	rMAE (%)	3.62 ± 4.13	2.36 ± 1.36	2.12 ± 1.32	1.86 ± 0.78	1.50 ± 0.85	1.38 ± 0.72
		rME (%)	1.43 ± 4.45	1.18 ± 2.22	1.42 ± 1.93	−0.33 ± 1.66	−0.07 ± 1.54	−0.28 ± 1.34
	PCG	rMAE (%)	1.46 ± 0.93	1.66 ± 1.21	1.62 ± 1.22	1.07 ± 0.53	1.09 ± 0.69	1.05 ± 0.59
		rME (%)	0.65 ± 1.59	1.34 ± 1.55	1.27 ± 1.57	−0.11 ± 1.16	−0.15 ± 1.24	−0.17 ± 1.16
	FG	rMAE (%)	2.20 ± 0.90	2.24 ± 1.15	2.07 ± 1.05	1.57 ± 0.36	1.58 ± 0.41	1.49 ± 0.36
		rME (%)	0.72 ± 1.50	1.64 ± 1.50	1.33 ± 1.41	0.25 ± 0.92	−0.02 ± 0.89	0.11 ± 0.85
	ACG	rMAE (%)	1.61 ± 1.04	1.59 ± 1.15	1.62 ± 1.21	1.11 ± 0.58	1.20 ± 0.82	1.04 ± 0.68
		rME (%)	0.89 ± 1.63	1.22 ± 1.47	1.21 ± 1.56	−0.27 ± 1.16	−0.26 ± 1.37	−0.22 ± 1.17