Coherent signal analysis in color Doppler optical coherence tomography

被引：1

作者：

Kulkarni, MD ^{[1
]}

van Leeuwen, TG ^{[1
]}

Yazdanfar, S ^{[1
]}

Izatt, JA ^{[1
]}

机构：

[1] Univ Hosp Cleveland, Div GI, Cleveland, OH 44106 USA

来源：

COHERENCE DOMAIN OPTICAL METHODS IN BIOMEDICAL SCIENCE AND CLINICAL APPLICATIONS II, PROCEEDINGS OF | 1998年 / 3251卷

关键词：

color Doppler optical coherence tomography; optical coherence tomography; laser Doppler velocimetry; medical and biological imaging; coherence; interferometry;

D O I：

10.1117/12.306072

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 [生物医学工程];

摘要：

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 tradeoff 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 frame rate are also reported.

引用

页码：22 / 27

页数：6