Velocity-estimation accuracy and frame-rate limitations in color Doppler optical coherence tomography

被引：74

作者：

Kulkarni, MD ^{[1
]}

van Leeuwen, TG

Yazdanfar, S

Izatt, JA

机构：

[1] Case Western Reserve Univ, Dept Biomed Engn, Cleveland, OH 44106 USA

[2] Case Western Reserve Univ, Dept Med, Cleveland, OH 44106 USA

来源：

OPTICS LETTERS | 1998年 / 23卷 / 13期

关键词：

D O I：

10.1364/OL.23.001057

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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. (C) 1998 Optical Society of America OCIS codes: 170.3340, 170.4500, 030.6140, 030.6600.

引用

页码：1057 / 1059

页数：3

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