In the medical field, a method that measures the amount of thrombi in the
blood is desired. In our earlier research, we reported about a tool for
measuring the ratio of thrombi in the blood at the right atrium of the heart by
using transesophageal echocardiography (TEE) movies. However, it is
difficult to track the motion of the contour of the atrium wall from a TEE
image sequence using the previous extraction method. In this research, we
propose a new method for improving the previous extraction method by
adding correlation processing. The position of the processing points of each
image is related mutually in serial frames in the processed TEE image
sequence. We are able to continuously understand the movement of the atrium
wall and accurately assess the amount of the thrombi with this improvement.
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