Table 3.

The interobserver agreements of intravoxel incoherent motion-derived parameters’ measurement

Parameter	Mean differences of replicated measurements			95% Interclass correlation coefficient
Differences between two measurements	95% CI of the difference	95% limit of agreement
ADC (×10−3 mm2 s–1)	0.22 ± 0.10	0.0243 to 0.4252	0.0550 to 0.4293	0.967 (0.945 to 0.980)
D (×10−3 mm2 s–1)	0.20 ± 0.18	−0.1522 to 0.5682	−0.1595 to 0.5755	0.851 (0.751 to 0.911)
D* (×10−1 mm2 s–1)	0.24 ± 0.33	−0.3988 to 0.8820	−0.4119 to 0.8951	0.748 (0.577 to 0.849)
f (%)	0.18 ± 0.25	−0.3048 to 0.6613	−0.3147 to 0.6712	0.938 (0.897 to 0.963)

Data are mean ± SD. ADC, apparent diffusion coefficient; CI, confidence interval; D, pure diffusion coefficient; D*, perfusion-related incoherent microcirculation; f, microvascular vol fraction; SD, standard.