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英文誌(2004-)

Journal of Medical Ultrasonics

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1994 - Vol.21

Vol.21 No.03

Original Article(原著)

(0135 - 0141)

セクタ走査マルチプレーン探触子を用いた心腔内心エコー図法の開発

Development of Intracardiac Echocardiography with Multiplane Sector Probe

石光 敏行1, 垣花 昌明1, 渡辺 秀樹1, 榎本 強志1, 杉下 靖郎1, 中尾 成隆2

Toshiyuki ISHIMITSU1, Masaaki KAKIHANA1, Hideki WATANABE1, Tsuyoshi ENOMOTO1, Yasuro SUGISHITA1, Narutaka NAKAO2

1筑波大学臨床医学系内科, 2富士通株式会社医療機器技術部

1Institute of Clinical Medicine, University of Tsukuba, 2Medical Equipment Engineering Depatment, Fujitsu Limited

キーワード : Intracardiac echocardiography, Dog experiments multiplane, Transesophageal probe

We evaluated the effectiveness of a prototype multiplane transesophageal probe (5 MHz, 40 elements; probe size: 13 mm by 13 mm) in conducting intracardiac echocardiography in 7 dogs. The probe was inserted into the right atrium via the anterior right atrial wall and was positioned in the right atrium or the right ventricle. From a fixed probe position, the mechanical rotation of the scan head changes the image plane 0∼180, thus yielding multiplane orientaions. From the right atrium, we were able to image the cardiac structures under various orientations including long-axis and two-chamber views of the left side of the heart, as well as a four chamber view of the whole heart, and visualize transverse and longitudinal images of the ascending aorta. In addition, long-axis and short-axis views of the left ventricle could be obtained through the right ventricle. In three dogs, the wall motion abnormalities caused by acute myocardial infarction were continuously recorded. We concluded that multiplane orientations from a fixed probe position improve the imaging capabilities of intracardiac echocardiography and, when refined, could have many clinical applications.