Skip to main content

Table 1 Intra- and Inter-observer agreement (measured as the ICC) for the diffusion-related parameters measured before and after chemotherapy

From: Non-mono-exponential diffusion models for assessing early response of liver metastases to chemotherapy in colorectal Cancer

  Parameters Intra-observer ICC(95%CI) P-value Inter-observer ICC(95%CI) P-value
Pre-treatment ADC k 0.914 (0.834~0.9456) 0.783 0.804 (0.639~0.898) 0.914
K 0.929 (0.861~0.964) 0.893 0.717 (0.500~0.850) 0.453
DDC 0.948 (0.898~0.974) 0.913 0.706 (0.485~0.842) 0.207
α 0.918 (0.841~0.959) 0.788 0.877 (0.767~0.937) 0.453
D s 0.937 (0.877~0.968) 0.964 0.887 (0.784~0.942) 0.903
σ 0.924 (0.852~0.961) 0.863 0.816 (0.659~0.904) 0.631
Post-treatment ADC k 0.955 (0.910~0.977) 0.842 0.811 (0.650~0.902) 0.715
K 0.932 (0.867~0.965) 0.734 0.874 (0.762~0.936) 0.724
DDC 0.937 (0.877~0.968) 0.744 0.798 (0.630~0.895) 0.256
α 0.853 (0.724~0.924) 0.547 0.824 (0.637~0.914) 0.314
D s 0.914 (0.834~0.957) 0.658 0.804 (0.639~0.898) 0.893
σ 0.948 (0.899~0.974) 0.852 0.708 (0.486~0.844) 0.842
  1. ICC inter-class correlation coefficient, ADCk apparent diffusion coefficient from the kurtosis model, DDC distributed diffusion coefficients