Table 2 ICC value of intra- and inter observer agreement for the measurement of the pixels in ROI and the thickness of colon wall.

	Scan phase	Item	A1 vs A2	A1 vs B
The pixels in ROI	PCP	CRC	0.78	0.77
		IBD	0.77	0.76
		NTC	0.78	0.75
	AP	CRC	0.79	0.78
		IBD	0.79	0.78
		NTC	0.76	0.77
	PVP	CRC	0.80	0.76
		IBD	0.78	0.76
		NTC	0.80	0.79
The mean thickness of bowel wall	PCP	CRC	0.81	0.80
		IBD	0.82	0.78
		NTC	0.79	0.77
	AP	CRC	0.80	0.78
		IBD	0.77	0.78
		NTC	0.83	0.80
	PVP	CRC	0.86	0.78
		IBD	0.89	0.79
		NTC	0.90	0.81

Note: ICC, intraclass correlation coefficients; ROI, region of interest; CRC, colorectal cancer; IBD, inflammatory bowel disease; NTC, normal thickening colon wall; PCP, precontrast phase; AP, arterial phase; PVP, portal vein phase; A1, reader A first read; A2, reader A second read; B, reader B.

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