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Table 3 Interobserver agreement of quantitative parameters derived from IVIM-MRI between two readers for 168 lymph nodes with a short-axis diameter equal to or greater than 5 mm

From: Non-invasive MR assessment of the microstructure and microcirculation in regional lymph nodes for rectal cancer: a study of intravoxel incoherent motion imaging

Parameter Reader1 Reader2 ICC 95% CI
D (10−3·mm2·s−1) 0.659 (0.216) 0.657 (0.210) 0.932 0.909~0.950
D* (10−3·mm2·s−1) 8.385 (4.883) 8.473 (5.182) 0.804 0.743~0.852
f 0.182 (0.098) 0.186 (0.097) 0.916 0.888~0.937
  1. Note: Value with number in parentheses is median with interquartile range; ICC intraclass correlation, CI confidence interval, D pure diffusion coefficient, D* pseudo-diffusion coefficient, f perfusion factor