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Table 5 Intra- and interobserver agreement (ICC) for the measurements of parotid IVIM and DCE MR parameters

From: Early evaluation of irradiated parotid glands with intravoxel incoherent motion MR imaging: correlation with dynamic contrast-enhanced MR imaging

  Intraobserver ICC Interobserver ICC
IVIM MR parameters
 ADC 0.935 (0.895–0.959) 0.930 (0.889–0.956)
 D 0.939 (0.902–0.962) 0.935 (0.896–0.959)
 D* 0.793 (0.608–0.890) 0.638 (0.421–0.773)
 f 0.655 (0.449–0.784) 0.633 (0.413–0.770)
DCE MR parameters
 MRE 0.978 (0.965–0.986) 0.966 (0.933–0.983)
 TTP 0.914 (0.863–0.964) 0.911 (0.826–0.955)
 Wash in Rate 0.983 (0.974–0.990) 0.980 (0.960–0.990)
  1. IVIM Intravoxel incoherent motion, DCE Dynamic contrast-enhanced, ICC Intraclass correlation coefficient, ADC Apparent diffusion coefficient, D pure diffusion coefficient, D* pseudo-diffusion coefficient, f perfusion fraction, MRE maximum relative enhancement, TTP Time to peak. The numbers between parentheses are 95 % confidence intervals