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Optics Letters

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  • Vol. 28, Iss. 13 — Jul. 1, 2003
  • pp: 1120–1122

Doppler angle and flow velocity mapping by combined Doppler shift and Doppler bandwidth measurements in optical Dopplertomography

Daqing Piao, Linda L. Otis, and Quing Zhu  »View Author Affiliations


Optics Letters, Vol. 28, Issue 13, pp. 1120-1122 (2003)
http://dx.doi.org/10.1364/OL.28.001120


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Abstract

Accurate estimation of flow velocity requires measurement of Doppler angle, which is not available in general clinical applications. We describe a novel method of direct Doppler angle and flow velocity mapping that uses a conventional single-beam optical Doppler tomography system. The Doppler angle is estimated by combination of Doppler shift and Doppler bandwidth measurements, and flow velocity is calculated from the Doppler shift and the estimated Doppler angle. In vivo study of lip microvascularization demonstrates that this method is capable of providing both flow speed and flow direction information.

© 2003 Optical Society of America

OCIS Codes
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.4500) Medical optics and biotechnology : Optical coherence tomography

Citation
Daqing Piao, Linda L. Otis, and Quing Zhu, "Doppler angle and flow velocity mapping by combined Doppler shift and Doppler bandwidth measurements in optical Dopplertomography," Opt. Lett. 28, 1120-1122 (2003)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-28-13-1120


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