川井 順一¹, 吉田 清¹, 穂積 健之¹, 赤阪 隆史¹, 高木 力¹, 山室 淳¹, 八木 登志員¹, 盛岡 茂文¹, 吉川 純一²

Junichi KAWAI¹, Kiyoshi YOSHIDA¹, Takeshi HOZUMI¹, Takashi AKASAKA¹, Tsutomu TAKAGI¹, Atsushi YAMAMURO¹, Toshikazu YAGI¹, Shigefumi MORIOKA¹, Junichi YOSHIKAWA²

¹神戸市立中央市民病院循環器センター内科, ²大阪市立大学第1内科

¹Division of Cardiology Kobe General Hospital, ²First Department of Internal Medicine Osaka City University Medicine School

キーワード : Acoustic quantification, Color kinesis, Echocardiography, Endocardial wall motion

Color kinesis is a new technology for analysis of left ventricular wall motion by two-dimensional echocardiography based on acoustic quantification. This technique uses integrated backscatter data that identifies samples that change from blood to tissue or from tissue to blood during sequential acoustic frames to detect endocardial motion in real time automatically. Each frame that has changed from the preceding frame is marked with a single hue. The colors accumulate frame by frame throughout systole, resulting in a color overlay that is superimposed on the two-dimensional echocardiographic image. These color overlays are genegrated in real time, and the display is updated continuously. Here we evaluated the concordance between an experienced and inexperienced observer in the evaluation of left ventricular wall motion using color kinesis and two-dimensional echocardiography. Concordance between the beginner using color kinesis and the experienced observer using two-dimensional echocardiography was significantly higher than that between the beginner and an experienced observer using two-dimensional echocardiography alone (p