Table 3.

Mean residual errors of gating-and-following (δ) and gating-only (δ₀) algorithms and the improvement factor (δ/δ₀) for different acceptance windows (mm) in the ten volunteers^*.

V	window (mm)	right kidney				left kidney
		4	6	8	full	4	6	8	full
1	δ(mm)	0.43	0.44	0.45	0.48	0.88	0.89	0.9	0.91
	δ0(mm)	0.85	1.21	1.79	2.11	1.15	1.45	1.94	2.79
	δ0/δ	198%	274%	397%	442%	131%	162%	216%	307%
2	δ(mm)	0.42	0.48	0.55	1.2	0.61	0.75	0.77	1.6
	δ0(mm)	0.73	0.87	1.21	2.63	0.76	1.25	1.41	3.63
	δ0/δ	172%	180%	218%	220%	123%	166%	182%	228%
3	δ(mm)	0.54	0.58	0.63	0.9	0.54	0.57	0.68	0.75
	δ0(mm)	1.29	1.78	2.34	4.9	1.02	1.44	2.15	4.37
	δ0/δ	238%	308%	373%	543%	189%	254%	315%	582%
4	δ(mm)	0.55	0.57	0.62	0.81	0.78	0.76	0.88	0.86
	δ0(mm)	1.05	1.32	1.46	4.77	1.16	1.42	1.77	2.55
	δ0/δ	192%	232%	236%	590%	149%	185%	202%	294%
5	δ(mm)	0.38	0.41	0.48	0.5	0.79	0.76	0.76	0.97
	δ0(mm)	1.3	1.83	2.43	3.02	1.24	1.57	1.95	2.99
	δ0/δ	347%	444%	505%	604%	158%	207%	258%	309%
6	δ(mm)	0.88	0.92	1	1.83	0.45	0.57	0.65	1.53
	δ0(mm)	1.3	1.57	1.9	5.41	1.21	1.75	2.42	7.05
	δ0/δ	148%	171%	191%	297%	269%	305%	374%	460%
7	δ(mm)	0.55	0.62	0.78	0.69	0.35	0.34	0.36	0.4
	δ0(mm)	1.34	2.18	3.19	3.19	0.92	1.42	1.84	2.05
	δ0/δ	244%	348%	406%	459%	266%	413%	505%	510%
8	δ(mm)	0.78	0.79	0.81	0.78	0.54	0.64	0.74	0.87
	δ0(mm)	1.26	1.65	1.71	1.86	1.1	1.5	2.03	2.64
	δ0/δ	161%	208%	212%	238%	204%	234%	275%	302%
9	δ(mm)	0.63	0.62	0.68	0.88	0.42	0.43	0.62	0.66
	δ0(mm)	1.38	1.64	2.1	6.59	1.26	1.91	2.88	4.12
	δ0/δ	220%	264%	310%	750%	302%	448%	466%	621%
10	δ(mm)	0.35	0.35	0.41	0.42	0.39	0.41	0.43	0.41
	δ0(mm)	1.22	1.57	1.97	3.48	0.82	1.17	1.67	3.68
	δ0/δ	345%	446%	476%	822%	209%	283%	386%	890%
mean	δ(mm)	0.55	0.58	0.64	0.85	0.57	0.61	0.68	0.9
	δ0(mm)	1.17	1.56	2.01	3.79	1.06	1.49	2.01	3.59
	δ0/δ	213%	270%	314%	447%	185%	243%	296%	400%

^*Using the mean tracking factors of 0.61, 0.63, 0.63 and 0.66 for ±4, ±6, ±8 mm and full acceptance windows, respectively. V: Volunteer