Share Email Print
cover

Proceedings Paper

Photoacoustic imaging using a frequency domain synthetic aperture focusing technique
Author(s): S. Boonsang; J. Zainal; Richard J. Dewhurst
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

This paper describes the application of a frequency domain synthetic aperture focusing technique to photoacoustic imaging. The photoacoustic probe consisted of a laser delivery fiber-optic (diameter of 600 μm, plastic coated silica) combined with a polymer (PVDF) transducer for ultrasonic detection. This system had a broadband frequency response in the MHz region. Such an integral probe was designed to optically transmit and receive near on-axis ultrasonic transients simultaneously, in under water applications. A frequency domain synthetic aperture method was successfully applied using phantom samples to produce 2D images from A-scan signals received from the probe. A range of samples were examined, including black nylon with 1 mm circular holes at a depth of 5.9 mm from the surface. A comparison was made with conventional B-scan images and with time domain synthetic aperture images. Results showed that synthetic focusing apertures, in time or frequency domains, offer better signal-to-noise ratios with improved capabilities in lateral resolution.

Paper Details

Date Published: 29 July 2004
PDF: 7 pages
Proc. SPIE 5486, ALT'03 International Conference on Advanced Laser Technologies: Biomedical Optics, (29 July 2004); doi: 10.1117/12.572040
Show Author Affiliations
S. Boonsang, Univ. of Manchester Institute of Science and Technology (United Kingdom)
J. Zainal, Univ. of Manchester Institute of Science and Technology (United Kingdom)
Richard J. Dewhurst, Univ. of Manchester Institute of Science and Technology (United Kingdom)


Published in SPIE Proceedings Vol. 5486:
ALT'03 International Conference on Advanced Laser Technologies: Biomedical Optics
Ruikang K. Wang; Jeremy C. Hebden; Alexander V. Priezzhev; Valery V. Tuchin, Editor(s)

© SPIE. Terms of Use
Back to Top