Transcranial ultrasonography system aided by fuzzy model

In conventional transcranial sonography system for human, available window of skull in adults is limited to the temporal bone. Visualization of an intracranial tissue from all angles can support to diagnose the brain disease with high accuracy. However, no transcranial sonography system has been developed. This paper describes transcranial ultrasonography system based on anatomical knowledge. Generally, it is difficult to visualize intracranial tissues from frontal bone because of large attenuation in skull. To overcome this difficulty, we employ fuzzy signal processing and human brain anatomical model. In our system, we can successfully extract the skull and the brain surface for human. As a result, our method could visualize two-dimensional skull and brain surface.