Coherent signal analysis in color Doppler optical coherence tomography


Journal Article

Color Doppler optical coherence tomography (CDOCT) is a recent innovation which allows spatially localized flow velocity mapping simultaneous with micro-structural imaging. We present a theoretical model for velocity image formation in CDOCT. The equivalence between the heterodyne detector current power spectrum in CDOCT and the optical source power spectrum is established. We show that stochastic modifications of the detected electronic spectrum by fluctuating scatterer distributions in the flow field give rise to unavoidable velocity estimation inaccuracies, as well as to the fundamental trade-off between the maximum velocity image acquisition rate and the estimated velocity precision. Novel algorithms which permit high fidelity depth-resolved measurements of velocities in turbid media with optimal flame rate are also reported.

Full Text

Duke Authors

Cited Authors

  • Kulkarni, MD; Van Leeuwen, TG; Yazdanfar, S; Izatt, JA

Published Date

  • December 1, 1998

Published In

Volume / Issue

  • 3251 /

Start / End Page

  • 22 - 27

International Standard Serial Number (ISSN)

  • 0277-786X

Digital Object Identifier (DOI)

  • 10.1117/12.306072

Citation Source

  • Scopus