使用扫描仪调制空间干涉图用于体内全范围傅里叶域光学相干断层扫描。

Use of a scanner to modulate spatial interferograms for in vivo full-range Fourier-domain optical coherence tomography.

作者信息

An Lin, Wang Ruikang K

机构信息

Department of Biomedical Engineering, Oregon Health & Science University, Portland 97239, USA.

出版信息

Opt Lett. 2007 Dec 1;32(23):3423-5. doi: 10.1364/ol.32.003423.

DOI:10.1364/ol.32.003423

PMID:18059954

Abstract

We report a new yet simple method to achieve full-range complex Fourier-domain optical coherence tomography (OCT) for in vivo imaging. The method utilizes a scanner that is dedicated for lateral scanning in the system to introduce a constant carrier frequency into the OCT spectral interferograms during the scanning. This is achieved by simply offsetting the sampling beam spot away from the pivot point of the scanning mirror. We demonstrate the method experimentally for in vivo full-range imaging of the anterior segment of a human eye. The method is free from complex conjugate mirror image and self-cross-correlation image artifacts.

摘要

我们报告了一种全新且简单的方法，可实现用于体内成像的全范围复傅里叶域光学相干断层扫描（OCT）。该方法利用系统中专门用于横向扫描的扫描仪，在扫描过程中将恒定载波频率引入OCT光谱干涉图中。这通过简单地将采样光束光斑从扫描镜的枢轴点偏移来实现。我们通过实验证明了该方法可用于人眼前节的体内全范围成像。该方法不存在复共轭镜像和自相关图像伪影。