Spectral optoacoustic imaging using a wavelength-multiplexing technique

Guenther Paltauf; Miriam Steininger

doi:10.1117/12.536698

12 July 2004 Spectral optoacoustic imaging using a wavelength-multiplexing technique

Guenther Paltauf, Miriam Steininger

Proceedings Volume 5320, Photons Plus Ultrasound: Imaging and Sensing; (2004) https://doi.org/10.1117/12.536698
Event: Biomedical Optics 2004, 2004, San Jose, CA, United States

Abstract

Spectral optoacoustic imaging uses two or more optical wavelengths for the excitation of ultrasonic waves in order to obtain spectrally resolved images of tissue. We developed a wavelength-multiplexing method that enables the simultaneous generation and detection of optoacoustic waves with two optical wavelengths emitted from a pump laser - optical parametric oscillator system. Two-dimensional images were taken with a linearly scanning optoacoustic transducer from phantoms and from tissue in vivo. The time required for signal acquisition depended solely on the pulse repetition rate of the laser. At presence, with a 10 Hz system, this time was between 10 and 20 seconds. Pairs of images at two wavelengths show an exact overlap of the imaged structures. Wavelength-dependent variations of optical absorption coefficients are visualized by calculating ratio and difference images. The presented experimental results demonstrate the feasibility of the method to generate maps of blood oxygenation.

Citation Download Citation

Guenther Paltauf and Miriam Steininger "Spectral optoacoustic imaging using a wavelength-multiplexing technique", Proc. SPIE 5320, Photons Plus Ultrasound: Imaging and Sensing, (12 July 2004); https://doi.org/10.1117/12.536698

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