A non-invasive, in-vivo, bubble sizing instrument

被引：0

作者：

Magari, PJ ^{[1
]}

Kline-Schoder, RJ ^{[1
]}

Stoedefalke, BH ^{[1
]}

Butler, BD ^{[1
]}

机构：

[1] Creare Res & Dev Inc, Hanover, NH 03755 USA

来源：

1997 IEEE ULTRASONICS SYMPOSIUM PROCEEDINGS, VOLS 1 & 2 | 1997年

关键词：

D O I：

暂无

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Creare has developed and demonstrated a non-invasive, in-vivo instrument for detecting, classifying, and sizing gaseous emboli which can result in decompression sickness. The instrument consists of a low-frequency pump transducer to excite the fundamental vibration mode of the bubbles and a high-frequency imaging transducer to observe the resonance. Because the bubbles act as nonlinear mixers, sidebands will be present in the high-frequency return signal at plus and minus the pump frequency, if and only if, there is a resonant bubble. The instrument was extensively tested in vitro over a wide range of bubble size distributions. Preliminary experiments were performed on an animal model to demonstrate the device in vivo.

引用

页码：1205 / 1210

页数：6