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| The study of observer consistency of 2017 ACR TI-RADS classification in thyroid nodules with different diameters |
| ZHONG Min-ying1, HUANG Wei-jun2, CHEN Yong-yu2, LI Feng2, YANG Ying-hua3 |
1.Department of Ultrasound, Nanhai People’s Hospital of Foshan, Foshan Guangdong 528000, China;
2.Department of Ultrasound, the First People’s Hospital of Foshan, Foshan Guangdong 528000, China;
3.Department of Ultrasound, Foshan Hospital of Traditional Chinese Medicine, Foshan Guangdong 528000, China |
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Abstract Objective: To investigate the repeatability of descriptive terminology of thyroid imaging reporting and data system(TI-RADS) recommended by 2017 American College of Radiology(ACR) used by different physicians in thyroid nodules with different diameters. Methods: By retrospective analysis, 497 thyroid nodules were divided into ＜10 mm, 10~20 mm and ＞20 mm groups. The nodules were classified according to TI-RADS standard, and the consistency among observers was analyzed by consistency test. Results: In TI-RADS descriptive terms, the Kappa values of component and echo in 10~20 mm group were higher than those in other two groups. The consistency of shape in three groups was better. The consistency of margins in the three groups was poor. The consistency of calcification in 10~20 mm group and ＞20 mm group was better. The Kappa value of TI-RADS classification in 10~20 mm group was the highest. Conclusion: TI-RADS descriptive terms and classification have good reproducibility among observers, but there are differences among nodules with different diameters, and 10~20 mm group has the least variation.
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Received: 23 October 2018
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2019, Vol. 30 
