Assessing cross-sectional elasticity map by dynamic imaging acoustic waves with phase sensitive optical coherence tomography

Author

Shaozhen Song ; Zhihong Huang ; Wang, Ruikang K.

Author_Institution

Dept. of Bioeng., Univ. of Washington, Seattle, WA, USA

fYear

2013

fDate

21-25 July 2013

Firstpage

1166

Lastpage

1169

Abstract

In this paper, we introduced the combined acoustical and optical method for imaging the propagating shear waves and mapping the shear modulus with a high resolution that is comparable to optical coherence tomography (OCT). The mechanical waves propagation is dynamically imaged with phase-sensitive OCT (PhS-OCT) with an equivalent frame rate of ~47 kHz. The 2-D elastography image is retrieved from measuring the shear wave velocity in the imaging region. The quantitative accuracy of this method is examined by validating experiments on agar phantoms.

Keywords

biological tissues; biomechanics; biomedical optical imaging; biomedical ultrasonics; elasticity; image retrieval; medical image processing; optical tomography; phantoms; ultrasonic imaging; ultrasonic propagation; 2D elastography image retrieval; acoustical method; agar phantoms; cross-sectional elasticity map; dynamic imaging acoustic waves; equivalent frame rate; mechanical wave propagation; optical method; phase sensitive optical coherence tomography; phase-sensitive OCT; quantitative accuracy; shear wave propagation imaging; shear wave velocity; Biomedical optical imaging; Coherence; Elasticity; Optical imaging; Phantoms; Mechanical property; acoustic wave imaging; optical coherence tomography; shear modulus; shear wave velocity;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium (IUS), 2013 IEEE International

Conference_Location

Prague

ISSN

1948-5719

Print_ISBN

978-1-4673-5684-8

Type

conf

DOI

10.1109/ULTSYM.2013.0298

Filename

6725154