Properties of PVA tissue phantoms produced by directional solidification

被引：2

作者：

Gouws, Gideon ^{[1
]}

Kivell, Dayna-Marie ^{[1
]}

Ryan, Brett ^{[1
]}

Thomson, Matt ^{[1
]}

Dawson, Andrew ^{[2
]}

机构：

[1] Victoria Univ Wellington, Sch Engn & Comp Sci, Wellington, New Zealand

[2] Ind Res Ltd, Lower Hutt, New Zealand

来源：

2011 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS) | 2011年

关键词：

D O I：

10.1109/ULTSYM.2011.0331

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Polyvinyl alcohol (PVA) cryogel samples prepared by repeated directional freezing and thawing steps are shown to display an anisotropic structure due to the effect of ice templating during the freezing process. The mechanical stability of the material is improved by the application of a number of directional freeze steps followed by thawing. The anisotropy of the material is confirmed by measurements of acoustic impedance and a simple model is proposed to explain the variation of impedance with the microstructure.

引用

页码：1341 / 1344

页数：4

共 6 条

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