Synthesis of a fresnel acoustic lens for acoustic brightness thermometry

被引：0
|
作者：
E. V. Krotov
A. M. Reĭman
P. V. Subochev
机构：
[1] Institute of Applied Physics,
来源：
Acoustical Physics | 2007年 / 53卷
关键词：
43.35.Ud; 43.38.Hz; 43.58.Ls;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The applicability of different types of Fresnel acoustic lenses as antenna array systems in acoustic brightness thermometry of biological tissues is theoretically and numerically analyzed. On the basis of the technical feasibility criterion formulated for these systems, the wavelength suitable for the use in acoustic thermographs with arrays in the form of Fresnel lenses is determined. The focusing properties of different Fresnel lenses are analyzed. A method for constructing Fresnel lenses that is based on varying the focusing distances is proposed. The method provides an opportunity to design trifocal antenna systems with improved focusing properties.
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页码：688 / 693
页数：5
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