Abstract
Echography is indispensable equipment in every medical field but examination with echography greatly depends on the expertise and experience of an operator. So, it is difficult to obtain standard cross sections if a person who handles the probe beside the patient is not skilled in echography. In this paper, we have experimented to evaluate the skill of echography. First, we experimented and evaluated the ultrasound probe approach on several patterns. Next, we estimated the mental rotation matrix by focusing on the echogram change and probe movement. The mental rotation indicate to the ability to mental rotate the object of three-dimensional. In echography, mental rotation ability was defined as the probe displacement to follow the organ moved by body motion and breathing. As the result of evaluation experiments, we discriminated between the amount of movement of the actual probe and the organ acquired by time-varying image processing and we defined examiner axis. So, we have confirmed the usefulness and the possibility for an assistant system in echography by mental rotation matrix.
