Figure 8.

Presentation of three-dimensional gray-scale ultrasound of papillary thyroid cancer with a new 3D postprocessing technique - tomographic ultrasound imaging (TUI). (a) a set of sequential slices 2 mm apart in the c-plane (plane parallel to the surface of the ultrasound probe) covering the whole nodule and localizer in the axial plane (upper left corner); (b) TUI of the whole nodule with static volume contrast imaging (VCI) - a set of c-plane images as a result of rendering of sequential thin slice volumes (2 mm thickness) with the surface algorithm and axial localizer (upper left corner). On coronal images the lobulations of the carcinoma (arrows) are more readily distinguished than in Fig. 8(a) due to improved contrast and reduced noise.