Detecting photoacoustic signals with a probing ultrasound beam

Yong Yao; Da Xing; Yaguang Zeng

doi:10.1117/12.482932

12 September 2002 Detecting photoacoustic signals with a probing ultrasound beam

Yong Yao, Da Xing, Yaguang Zeng

Proceedings Volume 4916, Optics in Health Care and Biomedical Optics: Diagnostics and Treatment; (2002) https://doi.org/10.1117/12.482932
Event: Photonics Asia, 2002, Shanghai, China

Abstract

A new method of measuring photoacoustic (PA) waves in situ is proposed. We make a probe ultrasonic beam to pass through the thick biotissue sample. Its focus point is used to tag the position of the PA signal overlapped by the PA interaction area in order to carry the PA information and take it out with the probe beam. When the detecting waves met the PA signal, a beating—wave is generated. Then it is received by a hydra-phone. After amplification and demodulation, a PA signal will be restored. In addition, the attenuation of PA signal in transmission could be decided by measuring the amplitude difference of probe ultrasound in front and behind the sample. It was helpful to simplify the reconstruction of the PA tomographic image and to increase SNR. The noise of the measurement system and background could be reduced when PA waveforms were discriminated. We measured the beating-wave produced by 532nm laser and 1 .4MHz probe ultrasonic beam in the thick biotissue and absorptive media, and reconstructed their PA signal waves with fine SNR.

Citation Download Citation

Yong Yao, Da Xing, and Yaguang Zeng "Detecting photoacoustic signals with a probing ultrasound beam", Proc. SPIE 4916, Optics in Health Care and Biomedical Optics: Diagnostics and Treatment, (12 September 2002); https://doi.org/10.1117/12.482932

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Ultrasonography

Signal detection

Ultrasonics

Photoacoustic spectroscopy

Signal attenuation

Signal to noise ratio

Laser beam diagnostics

Show All Keywords

Keywords/Phrases

Search In:

Publication Years