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On gray-scale ultrasonography, a solid-component 18-mm thyroid nodule with hypoechogenicity and a well-defined margin in the right lobe is shown. A. A shear-wave speed (SWS) of 1.91 m/sec in the nodule is displayed on the Virtual Touch Tissue Quantification (VTQ) system using point shear-wave elastography. B. A SWS of 2.39 m/sec in the same depth surrounding the parenchyma is displayed on the VTQ.
