A pulsed Schlieren system for visualizing beams from phased-array HIFU applicators

被引：0

作者：

Christensen, Douglas A. ^{[1
]}

Chao, Aborn ^{[1
]}

机构：

[1] Univ Utah, Dept Bioengn, Salt Lake City, UT 84112 USA

来源：

6TH INTERNATIONAL SYMPOSIUM ON THERAPEUTIC ULTRASOUND | 2007年 / 911卷

关键词：

Schlieren; ultrasound beam patterns; pulsed laser;

D O I：

暂无

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

We have assembled a Schlieren system for imaging the beam patterns from HIFU transducers in water to verify the desired beam focusing and direction. It consists of a high power (65 mW) short-pulse (as short as 2 ns) laser emitting at 658 nm, a beam expander/spatial filter, water tank, 400 mu m round stop, and a 12-bit CCD camera (1035 x 1317 pixels). The laser is synchronized to the driving electronics of the transducer but its pulse is delayed, effectively freezing of the acoustic wavefronts in the imaged space.

引用

页码：15 / +

页数：2

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