Cross-sectional elasticity imaging of carotid arterial wall in short-axis plane by transcutaneous ultrasound

Nozomi Nakagawa, Hideyuki Hasegawa, Hiroshi Kanai

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

We have developed the phased tracking method [H. Kanai, M. Sato, Y. Koiwa and N. Chubachi: IEEE Trans. UFFC 43 (1996) 791.] for measuring the minute change in thickness during one heartbeat and the elasticity of the arterial wall with transcutaneous ultrasound. When this method is applied to a plane perpendicular to the axis of the artery (short-axis plane) using a linear-type probe, only an ultrasonic beam which passes through the center of the artery coincides with the direction of the change in thickness. At other beam positions, the wall motion cannot be accurately tracked because the direction of wall expansion slips off the beam. To obtain the cross-sectional image of elasticity in the short-axis plane using transcutaneous ultrasound, in this paper, the directions of ultrasonic beams are designed so that each beam always passes through the center of the artery; thus, they always coincide with the direction of the wall expansion. In basic experiments, the accuracy in elasticity measurement was evaluated using a silicone rubber tube. In in vivo experiments, the minute change in wall thickness was measured along each ultrasonic beam, and the cross-sectional image of elasticity was obtained in the short-axis plane with transcutaneous ultrasound.

Original languageEnglish
Pages (from-to)3220-3226
Number of pages7
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume43
Issue number5 B
DOIs
Publication statusPublished - 2004 May

Keywords

  • Elasticity of arterial wall
  • Short-axis plane
  • Small change in wall thickness

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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