A theoretical investigation of ultrasonic transducer design for measurement of skin

被引:0
|
作者
Estanbouli, Y [1 ]
Hayward, G [1 ]
Barbenel, JC [1 ]
机构
[1] Univ Strathclyde, CUE, Dept EEE, Glasgow G1 1XW, Lanark, Scotland
来源
2002 IEEE ULTRASONICS SYMPOSIUM PROCEEDINGS, VOLS 1 AND 2 | 2002年
关键词
D O I
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中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
Despite significant advances in ultrasonic instrumentation, accurate and repeatable measurements of skin structure and dimensions remain problematic. Skin structure is complicated and structural boundaries are non-planar and may be diffuse, inhibiting the application of inversion methods for skin thickness measurement. Coupling a transducer to the skin surface with water or aqueous gel can produce significant artefacts in thickness measurement, which may be prevented by using a rubber dry contact. This work describes a theoretical investigation of these problems, using the PZFlex finite element code as a virtual prototyping tool. Simulations show that non-planar and diffuse boundaries have significant effect on the output backscattered signals; and using of low loss rubber dry contact is possible but further work is required to determine the properties and optimum shape of the rubber interface.
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页码:1277 / 1280
页数:4
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