Distinguishing benign from malignant thyroid nodules using thyroid ultrasonography: utility of adding superb microvascular imaging and elastography
- Authors
- Ahn, Hye Shin; Lee, Jong Beum; Seo, Mirinae; Park, Sung Hee; Choi, Byung Ihn
- Issue Date
- Apr-2018
- Publisher
- SPRINGER-VERLAG ITALIA SRL
- Keywords
- Elastography; Superb microvascular imaging; Thyroid nodule; Ultrasonography
- Citation
- RADIOLOGIA MEDICA, v.123, no.4, pp 260 - 270
- Pages
- 11
- Journal Title
- RADIOLOGIA MEDICA
- Volume
- 123
- Number
- 4
- Start Page
- 260
- End Page
- 270
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/1001
- DOI
- 10.1007/s11547-017-0839-2
- ISSN
- 0033-8362
1826-6983
- Abstract
- Thyroid nodules are common; however, malignancy is less than 7%. Therefore, additional techniques such as Doppler ultrasonography or elastography are used to improve diagnostic performance of conventional ultrasonography. We want to prospectively investigate the use of additional superb microvascular imaging (SMI) and strain elastography to B-mode ultrasound in thyroid nodules in distinguishing benign from malignant thyroid nodules. We analyzed 52 thyroid nodules (malignant = 26, benign = 26) and reviewers scored the likelihood of malignancy for three data sets (i.e., B-mode ultrasonography alone, B-mode ultrasonography + SMI, and B-mode ultrasonography + strain elastography). The area under the receiver-operating characteristic curve (Az) values, sensitivities, and specificities were compared. A comparison of the data sets revealed that area under the receiver-operating characteristic curve values were similar without statistical difference. However, on comparing sensitivity and specificity based on the management decision of whether to conduct fine-needle aspiration (FNA) after combining information from all three types of imaging (B-mode ultrasonography + SMI + strain elastography), specificity was significantly higher for the combined technique (34.6%) than for B-mode ultrasonography alone (11.5%), without decrease in sensitivity (P = 0.032). Additional use of SMI and strain elastography could potentially lead to increase in specificity in thyroid ultrasonography.
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