Transverse flow imaging based on photoacoustic Doppler bandwidth broadening

Junjie Yao; Lihong V. Wang

doi:10.1117/1.3339953

1 March 2010 Transverse flow imaging based on photoacoustic Doppler bandwidth broadening

Junjie Yao, Lihong V. Wang

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Journal of Biomedical Optics, Vol. 15, Issue 2, 021304 (March 2010). https://doi.org/10.1117/1.3339953

Abstract

We propose a new method to measure transverse flow velocity based on photoacoustic Doppler bandwidth broadening, which is determined by the geometry of the probe-beam and the velocity of the transverse flow. By exploiting pulsed laser excitation and raster motor scanning, three-dimensional structure and flow velocity can be imaged simultaneously. In addition, the flow direction can be determined with bidirectional scanning. In a flowing suspension of red-dyed microspheres (diameter: 6 μm), transverse flow speeds ranging from 0 to 2.5 mm/s as well as flow direction were measured. A cross-sectional flow image was also obtained with the tube laid in a zigzag pattern.

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

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Junjie Yao and Lihong V. Wang "Transverse flow imaging based on photoacoustic Doppler bandwidth broadening," Journal of Biomedical Optics 15(2), 021304 (1 March 2010). https://doi.org/10.1117/1.3339953

Published: 1 March 2010

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