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Table 3 Observer agreement (κ statistics) over the evaluation of features of thyroid nodules in multiplanar reformation mode (MPR) and by thin-slice rendering with surface algorithm (Surf).

From: Advantages and disadvantages of 3D ultrasound of thyroid nodules including thin slice volume rendering

  

κ

p

Echogenicity

MPR

0.70

< 0.0001

Echogenicity

Surf

0.71

< 0.0001

Borders

MPR

0.82

< 0.0001

Borders

Surf

0.60

< 0.0001

CAL

MPR

0.57

< 0.0001

CAL

Surf

0.44

= 0.0002

Shape in c-plane

Surf

0.57

< 0.0001

  1. calcification/microcalcification-like echogenic foci (CAL); c-plane - plane parallel to ultrasound probe