Intravascular shear stress imaging based on ultrasonic velocity vector measurement

Naotaka Nitta, Kazuhiro Homma, Tsuyoshi Shiina

研究成果: Conference contribution

3 被引用数 (Scopus)

抄録

It has been reported that the wall shear stress affects the biochemical function of endothelial cell and the development of arteriosclerosis plaque. Therefore, the quantitative estimation of the wall shear stress has possibilities to be useful for the prevention of arteriosclerosis. In this paper, a novel method for the real-time and quantitative estimation of intravascular shear stress distribution is proposed based on the estimates of the viscosity and the shear rate distribution. Experimental investigation, in which two types of fluids with different viscosity coefficient (water, and water mixed by PVA) flowed at a constant flow rate in a silicone tube with a simulated arteriosclerosis plaque, was performed. After estimating the viscosity coefficient and the shear rate distribution based on the ultrasonic measurements of the velocity vector distribution in the tube, the shear stress distributions were obtained. The averaged value of the shear stress distribution estimated in the higher viscosity fluid (water mixed by PVA: 0.3 Pa) became larger than that in the lower viscosity fluid (water: 0.1 Pa). These results reveal that the proposed method is technically valid for the quantitative shear stress estimation.

本文言語English
ホスト出版物のタイトル2005 IEEE Ultrasonics Symposium
ページ520-523
ページ数4
DOI
出版ステータスPublished - 2005
外部発表はい
イベント2005 IEEE Ultrasonics Symposium - Rotterdam, Netherlands
継続期間: 2005 9月 182005 9月 21

出版物シリーズ

名前Proceedings - IEEE Ultrasonics Symposium
1
ISSN(印刷版)1051-0117

Conference

Conference2005 IEEE Ultrasonics Symposium
国/地域Netherlands
CityRotterdam
Period05/9/1805/9/21

ASJC Scopus subject areas

  • 音響学および超音波学

フィンガープリント

「Intravascular shear stress imaging based on ultrasonic velocity vector measurement」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル