publications by Joseph A. Izatt.


Papers Published

  1. Kulkarni, M.D. and van Leeuwen, T.G. and Yazdanfar, S. and Izatt, J.A., Velocity-estimation accuracy and frame-rate limitations in color Doppler optical coherence tomography, Opt. Lett. (USA), vol. 23 no. 13 (1998), pp. 1057 - 9 .
    (last updated on 2007/04/13)

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

    Keywords:
    biomedical imaging;colour;Doppler measurement;flow visualisation;image resolution;light coherence;light scattering;Michelson interferometers;optical tomography;photodetectors;physiological models;turbidity;