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Table 1: 
Observed agreement between radiologists for presence and distribution of thyroid nodule echogenic focia
US ClassificationAgreement for Presence or Absence (No.) (%)Agreement for Distribution (No.) (%)
Punctate echogenic foci15/15 (100%)14/15 (93%)
Echogenic foci with large comet-tail artifacts11/15 (73%)11/15 (73%)
Macrocalcifications8/15 (53%)8/15 (53%)
Peripheral rim calcifications15/15 (100%)15/15 (100%)
  • Note:—No. indicates number of nodules.
  • ↵a The valid number of observations is 15.