Fig. 3
The 2DUS and 3DUS images of a 36-year-old male with PTMC. A.B. The longitudinal and transverse images of 2DUS showed a solid tumor located in the left lobe of thyroid. The tumor size was 0.61cmÍ0.57cmÍ0.52 cm and the 2DUS volume was 0.095 cm3. C. In the measurements of 3DUS volume, the longitudinal US image plane was selected as A plane, and a total of six slices images were obtained to manually trace the contour lines of the tumor. D. After the outlining, volume could be obtained automatically with three orthogonal slices simultaneously displayed, and the 3DUS volume was 0.090 cm3