Neurosonology:神経超音波医学
Print ISSN : 0917-074X
ISSN-L : 0917-074X
コントラストエコー法と超音波造影剤の発展
別府 慎太郎
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ジャーナル フリー

1997 年 10 巻 3 号 p. 93-95

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Contrast technique is applied for observing blood propagation in the cardiac cavity, enhancing the Doppler signal and examining myocardial perfusion. So far, bubbles have not been able to pass through the capillaries because of their relatively large size. Progress of bubble technology has made bubbles smaller than the diameter of the pulmonary capillaries, thus allowing transpulmonic left ventricular cavity opacification . These bubbles, however, will not opacify the myocardium well because of their dissolution during flow in the blood. Not air but gas bubbles such as fluorocarbon have been found to persist for a long time in the blood, resulting in obvious myocardial opacification. Moreover, new ultrasound technology using second harmonic images is used to make the myocardial opacification clear. Intravenous myocardial contrast echocardiography is a promising tool in a clinical setting. The combination of new contrast agents and new ultrasound technology makes it possible to demonstrate perfusion images of peripheral organs such as the liver, kidney and uterus.

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© 日本脳神経超音波学会
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