Local strain measurement of arterial wall based on longitudinal observation

Shukei Sugita, Takeo Matsumoto, Masaaki Sato

研究成果: Article査読

5 被引用数 (Scopus)


The purpose of this study was to establish a method for measuring the circumferential difference in the deformation of artery walls during pressurization. Thoracic aortas of Japanese white rabbits were stretched to their in vivo length and pressurized to 80 mmHg in a physiological saline at room temperature. Four 5-mm long small needles (φ0.4 mm) were stuck perpendicularly into the aortic wall at equal intervals on a circumference. Displacement of the needles during pressurization from 0 to 200 mmHg was observed from longitudinal direction with a CCD camera and laterally with two cameras placed in an opposite direction across the aorta. The images of the cameras were used to identify the points at penetration of each needle and to obtain circumferential length between the needles. Circumferential stretch ratio was significantly higher in the ventral side than in the dorsal, indicating that mechanical heterogeneity exists even in healthy arteries. The present method may be useful for further understanding of vascular mechanics.

ジャーナルNippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
出版ステータスPublished - 2003 1月

ASJC Scopus subject areas

  • 材料科学(全般)
  • 材料力学
  • 機械工学


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