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KMID : 1151820170110040227
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Journal of the Korean Society of Radiology
2017 Volume.11 No. 4 p.227 ~ p.234
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Evaluation of the Usefulness of Differential Diagnosis of Thyroid Nodules using Elasticity Score and Strain Ratio in Elastogpraphy
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Lee Jin-Soo
Yang Sung-Hee
Kim Chang-Soo
An Hyun
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Abstract
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This study evaluated the usefulness of the elasticity score and strain ratio in the differential diagnosis of benign and malignant nodules in thyroid elastography. We performed a retrospective analysis based on the results of fine needle aspiration cytology. The Chi-square test and the Mann-Whitney U test were used to analyze the difference between the five degrees of elasticity score and strain ratio according to the benign and malignant thyroid nodules. ROC curve analysis was used to determine the elasticity score and the best cut-off value of the strain ratio for the prediction of malignant nodules. There was a statistically significant difference (p=0.000) between the homogeneity of the elasticity score and the difference of the strain ratio between the benign and malignant nodule groups. On the ROC curve analysis, the elasticity score and the srain ratio for predicting benign and malignant nodules were determined as AUC 0.842, 0.700, cut-off value 3, 2.49 (p=0.001). Therefore, the elasticity score and strain ratio may be useful in the differential diagnosis of thyroid nodules.
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KEYWORD
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Elastography, Elasticity score, Strain ratio, Thyroid nodules
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