Simultaneous spatial and spectral mapping of flow using photoacoustic Doppler measurement

Adi Sheinfeld; Sharon Gilead; Avishay Eyal

doi:10.1117/1.3509113

1 November 2010 Simultaneous spatial and spectral mapping of flow using photoacoustic Doppler measurement

Adi Sheinfeld, Sharon Gilead, Avishay Eyal

Author Affiliations +

Journal of Biomedical Optics, Vol. 15, Issue 6, 066010 (November 2010). https://doi.org/10.1117/1.3509113

Abstract

We demonstrate the use of tone-burst excitation and time-gated spectral analysis for photoacoustic Doppler mapping of flow in an unperturbed vessel phantom and in a vessel with a spatially varying lumen. The method, which mimics pulsed Doppler ultrasound, enables simultaneous measurement of axial position and flow as well as complete characterization of the Doppler spectrum over a wide range of mean velocities (3.5 to 200 mm/s). To generate the required optical excitation, a continuous cw laser source followed by an external electro-optic modulator is used. Stenoses at various levels are emulated in a C-flex tube with a flowing suspension of micrometer-scale carbon particles. Two-dimensional maps of spectral content versus axial position at different points along the vessel and for various levels of perturbations demonstrate the potential use of the method for characterization of flow irregularities.

©(2010) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Adi Sheinfeld, Sharon Gilead, and Avishay Eyal "Simultaneous spatial and spectral mapping of flow using photoacoustic Doppler measurement," Journal of Biomedical Optics 15(6), 066010 (1 November 2010). https://doi.org/10.1117/1.3509113

Published: 1 November 2010

ACCESS THE FULL ARTICLE

JOURNAL ARTICLE
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

CITATIONS

Cited by 26 scholarly publications.

Explore citations on Lens.org

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Doppler effect

Modulation

Particles

Photoacoustic spectroscopy

Transducers

Spectral resolution

Ultrasonography

Show All Keywords

RELATED CONTENT

Photoacoustic Doppler axial flow measurement of homogenous media using structured...
Proceedings of SPIE (March 03 2014)

Doppler photoacoustic and Doppler ultrasound in blood with optical contrast...
Proceedings of SPIE (March 04 2013)

Time-resolved photoacoustic Doppler characterization of flow using pulsed excitation
Proceedings of SPIE (February 23 2010)

Coded photoacoustic Doppler excitation with near optimal utilization of the...
Proceedings of SPIE (February 18 2011)

Pulsed photoacoustic Doppler flow measurements in blood-mimicking phantoms
Proceedings of SPIE (February 28 2011)

Gigahertz optoacoustic imaging for cellular imaging
Proceedings of SPIE (February 25 2010)

Subscribe to Digital Library

Receive Erratum Email Alert

Show All Keywords

Keywords/Phrases

Search In:

Publication Years