CHIRP OPTICAL COHERENCE TOMOGRAPHY OF LAYERED SCATTERING MEDIA

被引：36

作者：

Haberland, U. H. P. ^{[1
]}

Blazek, V. ^{[1
]}

Schmitt, H. J. ^{[1
]}

机构：

[1] Inst High Frequency Technol, D-52056 Aachen, Germany

来源：

JOURNAL OF BIOMEDICAL OPTICS | 1998年 / 3卷 / 03期

关键词：

optical coherence tomography; scattering media; tunable laser; skin imaging; Monte Carlo simulation;

D O I：

10.1117/1.429889

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

A new noninvasive technique that reveals cross sectional images of scattering media is presented. It is based on a continuous wave frequency modulated radar, but uses a tunable laser in the near infrared. As the full width at half maximum resolution of 16 mu m is demonstrated with an external cavity laser, the chirp optical coherence tomography becomes an alternative to conventional short coherence tomography with the advantage of a simplified optical setup. The analysis of two-layer solid phantoms shows that the backscattered light gets stronger with decreasing anisotropic factor and increasing scattering coefficient, as predicted by Monte Carlo simulations. By introducing a two-phase chirp sequence, the combination of lateral resolved perfusion and depth resolved structure is shown. (C) 1998 Society of Photo- Optical Instrumentation Engineers.

引用

页码：259 / 266

页数：8

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