For the purpose of the echo pattern classification at maxillofacial regions, 99 samples histopathologically examined at the Hospital attached to Nihon University School at Matsudo were classified by ultrasonography.
The classification was to analyze the ultrasonographic images of each diseases into the following seven factors.
1. Shapes
2. Contours
3. Borders
4. Internal echoes
5. Boundary echoes
6. Posterior echoes
7. Acoustic shadows
As a result, lymphadenitis showed the hypoechoic homogeneous solid pattern with the unclear contours. It is also recognized that the internal echoes and boundary echoes of mixed pattern strong appeared irregulary on the malignant tumor.
