Table 4.

Mean and 95% confidence intervals for the percentage relative differences between lesion measurements made on different slice intervals by lesion type

Measurement	Slice interval (mm)	Site of metastasis
		Liver (n = 39), % difference			Lung (n = 39), % difference			Lymph (n = 40), % difference
Mean difference (%)	95% confidence interval (%)	P value	Mean difference (%)	95% confidence interval (%)	P value	Mean difference (%)	95% confidence interval (%)	P value
1D	1.25 vs 5	9.3	(6.6, 12.0)	<0.0001	5.8	(4.0, 7.6)	<0.0001	7.9	(5.4, 10.4)	<0.0001
	2.5 vs 5	5.6	(3.0, 8.2)	<0.0001	4.1	(2.3, 5.8)	<0.0001	6.4	(4.0, 8.9)	<0.0001
	1.25 vs 2.5	3.5	(1.0, 6.0)	0.0065	1.6	(−0.1, 3.4)	0.0583	1.4	(−0.9, 3.8)	0.2409
2D	1.25 vs 5	16.0	(10.6, 21.7)	<0.0001	10.5	(6.6, 14.6)	<0.0001	13.0	(6.5, 19.8)	<0.0001
	2.5 vs 5	11.6	(6.4, 17.1)	<0.0001	8.2	(4.3, 12.2)	<0.0001	9.5	(3.3, 16.1)	0.0028
	1.25 vs 2.5	4.0	(−0.9, 9.1)	0.1127	2.2	(−1.5, 6.0)	0.2431	3.2	(−2.7, 9.4)	0.2906
VOL	1.25 vs 5	−6.9	(−12.7, −0.7)	0.0297	−10.7	(−14.6, −6.7)	<0.0001	0.7	(−3.2, 4.8)	0.7207
	2.5 vs 5	−1.9	(−8.0, 4.6)	0.5603	−7.6	(−11.6, −3.4)	0.0007	2.2	(−1.8, 6.4)	0.2753
	1.25 vs 2.5	−5.1	(−11.0, 1.2)	0.1070	−3.4	(−7.6, 1.0)	0.1241	−1.5	(−5.3, 2.5)	0.4616

N = 118 lesions.