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Published February 28, 2008 | Published
Book Section - Chapter Open

Photoacoustic Doppler flowmetry


We report flow measurements based on the photoacoustic Doppler effect. We have performed flow experiments with a suspension of micrometer carbon particles and have detected the photoacoustic Doppler shift at various average flow speeds. We have also observed the directional dependence of the photoacoustic Doppler shift. Our experiment is based on the continuous wave (cw) photoacoustic generation. It is the goal of noninvasively monitoring hemodynamics in functional photoacoustic imaging that motivates our study.

Additional Information

© 2008 Society of Photo-Optical Instrumentation Engineers (SPIE). We would like to acknowledge the support provided by National Institutes of Health under Grant Nos. R01 EB000712 and R01 NS046214. We also would like to acknowledge the contribution from Dr. Konstantin Maslov and the help from Dr. Geng Ku.

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