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NEURO/HEAD & NECK Table of Contents   
Year : 2017  |  Volume : 27  |  Issue : 4  |  Page : 463-469
Evaluation of parenchymal thyroid diseases with multiparametric ultrasonography

1 Department of Radiology, Acibadem Taksim Hospital, Istanbul, Turkey
2 Department of Radiology, Cerrahpasa Faculty of Medicine, Istanbul University, Istanbul, Turkey
3 Department of Public Biostatistics, Cerrahpasa Faculty of Medicine, Istanbul University, Istanbul, Turkey
4 Department of Radiology, VKV Amerikan Hospital, Istanbul, Turkey

Correspondence Address:
Dr. Deniz Alis
Department of Radiology, Cerrahpasa Faculty of Medicine, Istanbul University, Istanbul
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijri.IJRI_409_16

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Aim: Differential diagnosis of parenchymal thyroid diseases by gray-scale ultrasound is quite difficult for a radiologist as the findings are very similar to each other. In this study we aimed to assess some quantitative spectral Doppler parameters, resistivity index (RI), acceleration time (AT), and quantitative elastography [shear wave velocity (SWV)] together to show their reliability for differential diagnosis of parenchymal thyroid diseases. Materials and Methods: We retrospectively reviewed findings of 227 patients (179 females, 48 males) that underwent spectral Doppler ultrasound and acoustic radiation force impulse between October 2013 and March 2016. Ages of the patients were between 18 and 74 years (39.52 ± 12.67). Based on clinical and laboratory findings, patients were divided into five groups (N: Normal, EH: Early Hashimoto, H: Late Hashimoto, M: Nodular Thyroid Disease, HM: Hashimoto + Nodular Thyroid Disease). Detailed statistical analyses were done on parameters such as age, gender, volume information, and RI, AT (ms), SWV (m/s). Results: No significant effect of gender or volume on the differentiation of disease pattern (Chi-square test: P= 0.306, Kruskal-Wallis test: P= 0.290) was found in this study. RI (0.41 ± 0.06) and SWV values (1.19 ± 0.18 m/s) were the lowest. AT values (>55 ms) were the highest in EH group (area under the curve: 0.913). Existence of H decreased RI and SWV values, while it extended AT in a different thyroid disease. Conclusion: Thyroid parenchymal diseases could be classified and differentiated from each other by measuring RI, AT, and SWV values quantitatively. So, in suspicious cases, these parameters could be a reliable asset for differential diagnosis.

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