Figure 1.
ROC analysis was performed to predict the diagnostic accuracy of malignant nodules on SWV value.
Table 1.
Diagnostic performance of different modalities for discrimination between benign and malignant thyroid lesions.
Figure 2.
In a 38-year-old female with a 11×8 mm nodule on the inferior segment of the right thyroid lobe, surgical pathology showed a papillary thyroid carcinoma.
(a) Gray-scale US showed a hypoechoic nodule with well-defined margin. (b) CEUS showed isoenhancement. (c) The SWV value was 2.39 m/s when the region of interest was placed within the nodule. It was misdiagnosed as benign nodule by conventional US, CEUS and ARFI.
Figure 3.
In a 29-year-old female with a 6×5 mm nodule on the right thyroid lobe, surgical pathology showed a nodular goiter.
(a) Gray-scale US showed a hypoechoic nodule with ill-defined margin and calcifications. (b) CEUS showed hypoenhancement. (c) The SWV value was 3.60 m/s when the region of interest was placed within the nodule. It was misdiagnosed as malignant nodule by conventional US, CEUS, and ARFI.
Figure 4.
In a 42-year-old female with a 9×8 mm nodule on the left thyroid lobe, surgical pathology showed a subacute thyroiditis.
(a) Gray-scale US showed a hypoechoic nodule with ill-defined margin. (b) CEUS showed hypoenhancement. (c) The SWV value was 3.93 m/s when the region of interest was placed within the nodule. It was misdiagnosed as malignant nodule by conventional US, CEUS, and ARFI.