Doppler angle and flow velocity estimation using conventional single-probing-beam optical Doppler tomography

Daqing Piao; Quing Zhu

doi:10.1117/12.477825

8 July 2003 Doppler angler and flow velocity estimation using conventional single-probing-beam optical Doppler tomography

Daqing Piao, Quing Zhu

Author Affiliations +

Proceedings Volume 4956, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VII; (2003) https://doi.org/10.1117/12.477825
Event: Biomedical Optics, 2003, San Jose, CA, United States

Abstract

Accurate flow velocity estimation requires measurement of the Doppler angle, which is not available in general clinical applications. We introduce a simple method of estimating Doppler angle and average flow velocity by using conventional single-probing-beam optical Doppler tomography. Both Doppler angle and flow velocity are estimated by combining Doppler shift and Doppler bandwidth measurements. Using two sets of intralipid experiments corresponding to fixed Doppler angle and fixed flow speed, we demonstrate that the estimated values of the Doppler angle and flow velocity are in good agreement with true values. The principle is further validated by in vivo measurements.

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Daqing Piao and Quing Zhu "Doppler angler and flow velocity estimation using conventional single-probing-beam optical Doppler tomography", Proc. SPIE 4956, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VII, (8 July 2003); https://doi.org/10.1117/12.477825

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KEYWORDS

Doppler effect

Doppler tomography

Signal to noise ratio

Signal detection

In vivo imaging

Optical filters

Laser induced plasma spectroscopy

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