Speckle reduction in optical coherence tomography by frequency compounding

被引:233
作者
Pircher, M [1 ]
Götzinger, E [1 ]
Leitgeb, R [1 ]
Fercher, AF [1 ]
Hitzenberger, CK [1 ]
机构
[1] Univ Vienna, Inst Med Phys, A-1090 Vienna, Austria
关键词
optical coherence tomography; speckle; biomedical optics; frequency compounding;
D O I
10.1117/1.1578087
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
We are investigating the possibility of a frequency compounding method for speckle reduction in optical coherence tomography. The method is based on incoherent summation of the magnitudes of two independent interferometric signals, which were recorded at two different center wavelengths simultaneously. We derive the corresponding statistics and compare the theoretical results with measurements obtained in a uniformly scattering sample. Finally we demonstrate our method by comparing images of human skin recorded in vivo with and without frequency compounding. The compounding method results in an increased contrast and improved image quality without loss of resolution. (C) 2003 Society of Photo-Optical Instrumentation Engineers.
引用
收藏
页码:565 / 569
页数:5
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