Abstract
The study included 197 thyroid nodules which were confirmed by fine-needle aspiration cytology or histopathologic examination. All nodules were graded with malignancy risk stratification of thyroids nodule accordingto the 2015 American Thyroid Association (ATA) management guidelines. Both color Doppler flow imaging (CDFI) and superb microvascular imaging (SMI) were used to classify blood flows of thyroid nodules according to Adler′s grading criteria. Morphologic and distribution features of blood flow were also observed by monochrome(mSMI). The optimal threshold drawing from ROC curve and diagnostic efficacy of single and combinative modality were calculated. The results showed that mSMI was more sensitive to detect blood flow of thyroid nodules than other Doppler techniques (P 0.05). But the specficity and accuracy of combinative modality ATA+ mSMI was significantly higher than that of ATA or mSMI alone (P<0.05). (Chin J Endocrinol Metab, 2017, 33: 845-848) Key words: Thyroid nodules; Malignancy risk stratification of thyroid nodule; Superb microvascular imaging
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