Intramural distribution of elastic moduli in thoracic aortas and its relationship to histology: Comparison between porcine and bovine thoracic aortas

Toshiro Ohashi, Yoko Kato, Takeo Matsumoto, Masaaki Sato

研究成果: Article査読

11 被引用数 (Scopus)

抄録

Local elastic moduli in the wall of porcine thoracic aortas were measured in the axial, circumferential, and radial directions by the pipette aspiration method. The local elastic moduli in the three directions were found to be independent of wall position. Then, histological analysis using color classification based on Mahalanobis' generalized distance was performed to quantitatively assess the correlation between elastic moduli and histology. Porcine thoracic aortas had a typical layered structure. The area fraction values, i.e., the percentage area of three structural components, elastin, collagen fibers and smooth muscle cells, were almost uniform in the wall. On the other hand, the moduli in bovine aortas reported previously decreased significantly from the inner to the outer sides of the wall. The histological structure was not homogeneous, that is, large clusters of smooth muscle cells existed in the outer side. These results suggest that the intramural distributions of elastic moduli are closely correlated with the histological structure.

本文言語English
ページ(範囲)568-573
ページ数6
ジャーナルJSME International Journal, Series C: Mechanical Systems, Machine Elements and Manufacturing
42
3
DOI
出版ステータスPublished - 1999 9

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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