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. 2020 Jan 22;20:9. doi: 10.1186/s40644-020-0289-2

Table 2.

Intra- and interobserver reproducibility of measurements of thyroid nodule IVIM parameters with different ROI methods

Parameters W-L ROI ICC (95% CI) S-S ROI ICC (95% CI)
Intraobserver Interobserver Intraobserver Interobserver
D 0.986 (0.975–0.992) 0.970 (0.946–0.984) 0.908 (0.834–0.949) 0.920 (0.855–0.956)
f 0.929 (0.873–0.961) 0.951 (0.911–0.973) 0.701 (0.460–0.835) 0.846 (0.722–0.915)
D* 0.902 (0.823–0.946) 0.894 (0.808–0.941) 0.510 (0.114–0.729) 0.562 (0.208–0.758)

D (× 10− 3 mm2/s), D* (× 10− 3 mm2/s)