A study on propagation velocity of small vibrations on aortic wall

Author

Takano, Masahiko ; Kanai, Hiroshi ; Chubachi, Noriyoshi ; Koiwa, Yoshiro ; Tezuka, Fumiaki ; Takahashi, Mitsuhiro

Author_Institution

Dept. of Electr. Eng., Tohoku Univ., Sendai, Japan

fYear

1994

fDate

3-6 Nov 1994

Firstpage

81

Abstract

The local propagation characteristics of small vibrations on the arterial wall due to the heart beat are investigated. Propagation velocity is obtained by analyzing the small vibrations measured simultaneously at two adjacent points on a vessel wall. From in vitro fundamental experiments, it is confirmed that these local acoustic properties (stiffness) of the wall are evaluated. Through experiments with extracted human thoracic aorta, it is found that the local stiffness, which is estimated from the pulse wave velocity of the aortic wall is increased with aging

Keywords

biomechanics; vibrations; aging; aortic wall; extracted human thoracic aorta; heart beat; in vitro fundamental experiments; local acoustic properties; local propagation characteristic; pulse wave velocity; small vibrations propagation velocity; stiffness; Acoustic measurements; Acoustic propagation; Acoustic pulses; Aging; Arteries; Heart beat; Humans; In vitro; Velocity measurement; Vibration measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1994. Engineering Advances: New Opportunities for Biomedical Engineers. Proceedings of the 16th Annual International Conference of the IEEE

Conference_Location

Baltimore, MD

Print_ISBN

0-7803-2050-6

Type

conf

DOI

10.1109/IEMBS.1994.412094

Filename

412094