title: Passive mechanical properties of large intestine under in vivo and in vitro compression.
abstract: This paper presents experimental data obtained from both in vivo and in vitro compression of the large intestine of goat. In vivo experimental data were obtained from compression tests on the large intestine of an anesthetized goat using force-displacement acquisition equipment. In vitro experimental data were also obtained from tissue excised after the in vivo experiments, and two types of data were then compared. The results demonstrated that the stress values had a strong dependence on the compressive rate in the in vivo experiments, although such effect was not distinct in the in vitro experiments. Additionally, at a lower compression rate, the intestinal tissues were found to be stiffer in the in vitro experiments than in the in vivo ones. This paper is a preliminary report on the mechanical properties of the large intestine based on in vivo and in vitro experimental data.
authors.affiliation: Biomedical Engineering Research Organization, Tohoku University, Sendai, Japan. higa@eng.u-hyogo.ac.jp
authors.forename: Masaru
authors.initials: M
authors.lastname: Higa
authors.forename: Yun
authors.initials: Y
authors.lastname: Luo
authors.forename: Takeshi
authors.initials: T
authors.lastname: Okuyama
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Takagi
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Shiraishi
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Yambe
mesh_terms: D000818:Animals; D001696:Biomechanical Phenomena / Q000379:methods; D019245:Compressive Strength; D003198:Computer Simulation; D004548:Elasticity; D005260:Female; D006041:Goats; D066298:In Vitro Techniques; D007420:Intestine, Large / Q000502:physiology*; D008954:Models, Biological; D013314:Stress, Mechanical; D016474:Weight-Bearing / Q000502:physiology*