TABLE 1.

Summary of raw data by CT perfusion parameter and sampling interval.BF, in mL/min/100g; BV, in mL/100g; MTT, in seconds; PS, in mL/min/100g; HAF, ratio without units.

		Tumor		Normal Liver
Parameter	Sampling Interval	Median	Inter-quartile range	Median	Inter-quartile range
BF	0.5s	200.7	139.5 – 263.8	134.1	88.4 – 182.9
	1s	216.5	145.4 – 314.9	140.0	91.0 – 190.9
	2s	268.8	180.1 – 391.6	166.0	114.7 – 236.5
	3s	296.3	206.1 – 437.4	194.4	132.2 – 270.7
	4s	339.7	234.9 – 465.2	222.0	151.7 – 297.0
BV	0.5s	15.5	9.7 – 20.8	14.9	11.8 – 18.7
	1s	15.9	9.5 – 20.6	15.0	11.5 – 17.8
	2s	17.6	10.7 – 22.8	15.8	12.1 – 18.7
	3s	17.7	11.9 – 25.1	16.2	12.1 – 20.0
	4s	19.4	13.8 – 26.9	17.0	12.2 – 21.1
MTT	0.5s	6.08	5.13 – 7.04	9.05	7.73 – 9.49
	1s	5.62	4.63 – 6.51	8.61	7.48 – 9.22
	2s	4.95	4.13 – 5.61	7.41	6.60 – 8.11
	3s	4.60	3.88 – 5.13	6.76	5.83 – 7.36
	4s	4.19	3.50 – 4.71	6.14	5.39 – 6.83
PS	0.5s	51.0	42.0 – 62.0	79.4	69.6 – 87.2
	1s	50.9	37.7 – 60.6	76.8	68.7 – 85.4
	2s	48.5	33.1 – 58.4	70.2	63.3 – 79.8
	3s	47.0	32.7 – 55.3	66.5	57.7 – 74.3
	4s	42.4	31.1 – 52.5	62.7	54.5 – 70.2
HAF	0.5s	0.48	0.36 – 0.58	0.16	0.07 – 0.29
	1s	0.48	0.35 – 0.58	0.18	0.08 – 0.31
	2s	0.46	0.33 – 0.53	0.19	0.11 – 0.31
	3s	0.42	0.32 – 0.54	0.21	0.13 – 0.32
	4s	0.40	0.31 – 0.51	0.24	0.16 – 0.33