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Table 1 Inter-observer consistency and comparisons of the absolute values of the parameters

From: Investigating the value of arterial spin labeling and intravoxel incoherent motion imaging on diagnosing nasopharyngeal carcinoma in T1 stage

  ICC§ (95% confidence interval) Tumor of T1 stage NPC Mucosa of healthy control P z AUC (95% confidence interval)
BF (mL/min/100 g) 0.994 (0.991–0.996) 81.85 ± 32.46 22.89 ± 6.84 <0.001 7.309 0.996 (0.944–1.000)
ADC (×10−3 mm2/s) 0.946 (0.915–0.966) 0.81 ± 0.12 1.08 ± 0.19 <0.001 −5.808 0.895 (0.803–0.953)
D (×10−3 mm2/s) 0.893 (0.831–0.932) 0.61 ± 0.10 0.83 ± 0.15 <0.001 −6.226 0.921 (0.836–0.970)
D* (×10−3 mm2/s) 0.894 (0.832–0.933) 26.21 ± 19.09 28.49 ± 18.50 0.341 −0.951
f 0.900 (0.842–0.936) 0.27 ± 0.11 0.34 ± 0.11 <0.001 −3.525 0.742 (0.628–0.835)
  1. § ICC is the abbreviation of Intra-class correlation
  2. All the values were calculated as the mean value of the measurements by two observers