Table 6. Registration errors: effect of the template size.

	Translate			Rotate			Scale			Combined
	B	95% CI	p-value	B	95% CI	p-value	B	95% CI	p-value	B	95% CI	p-value
(Intercept)	−0.14	−0.30; −0.01	0.075	−0.13	−0.29; 0.02	0.092	−0.12	−0.27; 0.03	0.126	−0.13	−0.28; 0.02	0.085
Tracer ([18F]FDG)	0.04	−0.17; 0.25	0.696	0.05	−0.16; 0.26	0.649	0.02	−0.18; 0.22	0.844	0.07	−0.13; 0.27	0.517
Image size (small)	1.36	1.20; 1.53	<0.001	1.47	1.30; 1.64	<0.001	1.34	1.19; 1.50	<0.001	1.46	1.30; 1.63	<0.001
Template size (same size)	−0.41	−0.53; −0.29	<0.001	−0.26	−0.38; −0.13	<0.001	−0.20	−0.33; −0.07	0.002	−0.19	−0.30; -0.07	0.001
Tracer * Image size	−0.52	−0.74; −0.30	<0.001	−0.33	−0.56; −0.11	0.004	−0.39	−0.60; -0.18	<0.001	−0.30	−0.52; −0.08	<0.001
Tracer * Template size	0.44	0.28; 0.59	<0.001	0.26	0.11; 0.41	0.001	0.33	0.18; 0.48	<0.001	0.28	0.13; 0.42	<0.001
Image size * Template size	−1.17	−1.33; −1.01	<0.001	−1.56	−1.71; −1.41	<0.001	−1.28	−1.43; -1.13	<0.001	−1.56	−1.71; −1.42	<0.001

The test was performed with Wistar rats, using [¹⁸F]FDG (n = 25) and [¹¹C]PK11195 (n = 19). Parameters estimates were obtained using [¹¹C]PK11195, with large image size and large template size as reference categories.