Evaluation of the departmental inter-rater reliability when scoring thyroid nodules according to the British Thyroid Association Ultrasound-classification model: Is there significant disagreement?

No significant inter-rater variability in U-scoring or recommending fine-needle aspiration biopsy was demonstrated between all the operators in the department. Radiologists showed significant variability in U-scoring and lower accuracy. Reliability and accuracy could be improved by addressing those problematic categories and features identified with this study.