超音波動画像処理による心室壁運動ベクトルの交点領域抽出法と心疾患症例への応用

概要

論文の詳細を見る
The expertise and experience are required for an examiner to diagnose using echocardiogram. To evaluate the malfunction of motion in the heart, many research of image processing method have developed but they were useful only for expert examiners. To bring benefit of portability in echography to wider medical staff, we have developed software to recognize the synchronous motion of heart by calculating intersection points between the instantaneous velocities of ventricular wall flow from successive echocardiograms. In addition, we defined intersection index to evaluate synchronous motion of heart by dividing echogram into small regions to calculate distribution of intersection points. Finally we introduced gravity point of the distribution and calculated its trajectory through a heartbeat. As the result, fluctuation of the gravity point in heart disease patients was strongly observed where the trajectory of the gravity point was stable in normal subjects.