Quantitative assessment of the phase tracking method for measurement of the elastic characteristics of arterial wall

Author

Suginouchi, Takehiko ; Kato, Makoto ; Hashimoto, Masahiko ; Tan-naka, Yoshinao ; Kanai, Hiroshi

Author_Institution

Matsushita Electr. Ind. Co. Ltd., Kyoto, Japan

Volume

2

fYear

2001

fDate

2001

Firstpage

1605

Abstract

The minute change in thickness of the arterial wall during one heartbeat is measured by the phase tracking method based on the constraint least squares method that detects displacement of the arterial wall with high precision from the instantaneous phase of the reflected wave, and then the elastic characteristic is detected. However, a propagation-attenuation effect introduces the error due to the shift of the center frequency in the reflected wave. In this paper, using a modified quadrature detection method, the thickness change of the vessel phantom has been measurable by 0.5 μm accuracy

Keywords

biomechanics; biomedical ultrasonics; blood vessels; least squares approximations; arterial wall; blood vessel phantom; constraint least squares method; displacement measurement; elastic characteristics; heartbeat; medical ultrasound; phase tracking; propagation-attenuation effect; quadrature detection; reflected wave; Acoustic pulses; Arteries; Communication industry; Displacement measurement; Electric variables measurement; Phase measurement; Pulse measurements; Thickness measurement; Ultrasonic transducers; Ultrasonic variables measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2001 IEEE

Conference_Location

Atlanta, GA

Print_ISBN

0-7803-7177-1

Type

conf

DOI

10.1109/ULTSYM.2001.992029

Filename

992029