Photoacoustic Doppler flow measurement in optically scattering media | Zendy

Hui Fang | Zendy; Konstantin Maslov | Zendy; Lihong V. Wang | Zendy

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Photoacoustic Doppler flow measurement in optically scattering media

Author(s) -

Hui Fang,

Konstantin Maslov,

Lihong V. Wang

Publication year - 2007

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.2825569

Subject(s) - doppler effect , photoacoustic doppler effect , photoacoustic effect , scattering , photoacoustic spectroscopy , photoacoustic imaging in biomedicine , laser doppler velocimetry , light scattering , optics , signal (programming language) , materials science , acoustic doppler velocimetry , blood flow , physics , medicine , radiology , astronomy , computer science , programming language

We recently observed the photoacoustic Doppler effect from flowing small light-absorbing particles. Here, we apply the effect to measure blood-mimicking fluid flow in an optically scattering medium. The light scattering in the medium decreases the amplitude of the photoacoustic Doppler signal but does not affect either the magnitude or the directional discrimination of the photoacoustic Doppler shift. This technology may hold promise for a new Doppler method for measuring blood flow in microcirculation with high sensitivity.

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