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. 2020 Feb 12;20:118. doi: 10.1186/s12885-019-6437-z

Table 1.

Shear wave elasticity values, and intra- and interrater intraclass correlation coefficient (ICC) agreement and coefficient of variation (CV) for EMean (mean elasticity) in region of interest (ROI) with the two methods (total nodular ROI with tracing total nodule and focal nodular ROI with 3 mm circle) by two raters

Method of ROI EMean (kPa), mean ± SD (min-max) ICC (95% CI) CV (%)
Read 1 Read 2
Total nodular ROI
 Intrarater assay (within image)
  Rater 1 25.3 ± 10.0 (12.0–49.6) 24.7 ± 9.0 (12.1–40.1) 0.975 (0.983–0.990) 1.7
  Rater 2 24.3 ± 11.7 (9.6–58.7) 24.3 ± 11.9 (9.2–59.9) 0.999 (0.997–1.000) 1.4
Intrarater assay (different image)
 Rater 1 24.8 ± 9.0 (12.0–40.0) 24.6 ± 9.4 (9.3–41.7) 0.959 (0.895–0.984) 7.6
 Rater 2 24.3 ± 11.7 (9.6–58.7) 26.0 ± 13.1 (10.3–60.8) 0.976 (0.933–0.991) 7.5
 Interrater assay 25.3 ± 10.0 (12.0–49.6) 24.3 ± 11.7 (9.6–58.7) 0.863 (0.653–0.946) 14.9
Focal nodular ROI
 Intrarater assay (within image)
  Rater 1 34.0 ± 17.2 (14.4–86.3) 39.6 ± 22.9 (16.3–115.2) 0.934 (0.842–0.973) 13.4
  Rater 2 45.0 ± 36.8 (12.4–179.9) 36.6 ± 23.4 (10.4–111.8) 0.866 (0.693–0.945) 16.9
Intrarater assay (different image)
 Rater 1 34.0 ± 17.2 (14.4–86.3) 33.6 ± 11.9 (11.2–53.7) 0.894 (0.730–0.958) 12.3
 Rater 2 45.0 ± 36.8 (12.4–179.9) 37.1 ± 19.1 (11.1–93.1) 0.734 (0.347–0.894) 19.8
 Interrater assay 34.0 ± 17.2 (14.4–86.3) 45.0 ± 36.8 (12.4–179.9) 0.783 (0.443–0.915) 19.0