Reproducibility study of intravoxel incoherent motion and apparent diffusion coefficient parameters in normal pancreas

Table 2 Intraclass correlation coefficient results of parameter values in different parts of the pancreas between different devices

	Machine A vs machine B		Machine A vs machine C		Machine B vs machine C
	ICC (95%CI)	P value	ICC (95%CI)	P value	ICC (95%CI)	P value
D in PaH	0.274 (-0.731, 0.697)	0.232	0.342 (-0.411, 0.712)	0.145	0.728 (0.358, 0.886)	0.002
D* in PaH	-0.186 (-1.545, 0.482)	0.670	0.27 (-0.611, 0.685)	0.220	0.578 (0.02, 0.822)	0.022
f in PaH	-0.209 (-1.818, 0.491)	0.673	0.173 (-0.386, 0.582)	0.272	0.19 (-0.541, 0.622)	0.274
D in PaB	0.456 (-0.332, 0.776)	0.089	0.683 (-0.026, 0.886)	0.028	0.551 (-0.079, 0.814)	0.037
D* in PaB	-0.521 (-3.056, 0.393)	0.815	-0.023 (-1.636, 0.587)	0.519	-0.256 (-2.207, 0.491)	0.691
f in PaB	0.385 (-0.407, 0.739)	0.124	-0.087 (-1.441, 0.534)	0.580	-0.332 (-2.715, 0.515)	0.748
D in PaT	0.324 (-0.614, 0.718)	0.186	0.286 (-0.557, 0.69)	0.201	0.908 (0.781, 0.961)	< 0.001
D* in PaT	0.569 (-0.204, 0.836)	0.060	-0.289 (-2.251, 0.475)	0.713	-0.062 (-1.02, 0.504)	0.569
f in PaT	0.531 (-0.144, 0.806)	0.047	0.35 (-0.633, 0.735)	0.174	0.486 (-0.275, 0.789)	0.073
SNR	0.081 (-0.206, 0.421)	0.312	0.178 (-0.238, 0.551)	0.205	0.067 (-0.152, 0.364)	0.301
ADC value	0.870 (0.691, 0.946)	< 0.001	0.707 (0.393, 0.871)	< 0.001	0.808 (0.590, 0.917)	< 0.001

ICC: Intraclass correlation coefficient; SNR: Signal-to-noise ratio; PaH: Pancreatic head; ADC: Apparent diffusion coefficient; D: Diffusion coefficient; PaT: Pancreatic tail; PaB: Pancreatic body; f: Perfusion fraction; D*: False diffusion coefficient.