Two-level optical coherence tomography scheme for suppressing spectral saturation artifacts

We demonstrate a novel method for reducing saturation artifacts in spectral-domain optical coherence tomography (SD-OCT) systems. This method is based on a two-level SD-OCT system with a dual-line charge-coupled device (CCD) camera. We compensate the saturated signal detected by the first line using...

Full description

Saved in:

Bibliographic Details
Published in:	Sensors (Basel, Switzerland) Switzerland), 2014-07, Vol.14 (8), p.13548-13555
Main Authors:	Wu, Chiung-Ting, Tsai, Meng-Tsan, Lee, Cheng-Kuang
Format:	Article
Language:	eng
Subjects:	Algorithms Charge coupled devices Degradation Devices Fingers Fingers - physiology Fourier Analysis Humans Image Processing, Computer-Assisted - methods noise in imaging system OCT Optical Coherence Tomography real-time Saturation Signal Processing, Computer-Assisted - instrumentation Signal-To-Noise Ratio Spectra Tomography, Optical Coherence - methods
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	We demonstrate a novel method for reducing saturation artifacts in spectral-domain optical coherence tomography (SD-OCT) systems. This method is based on a two-level SD-OCT system with a dual-line charge-coupled device (CCD) camera. We compensate the saturated signal detected by the first line using the unsaturated signal detected by the second line. The Fourier transform of the compensated spectrum shows effective suppression of saturation artifacts. This method was also successfully performed on phantom material and skin on a human finger. Our method causes neither back-scattering power loss nor signal-to-noise ratio (SNR) degradation. The only difference between the traditional system and our two-level system is our utilization of the dual-line CCD camera; no additional devices or complex designs are needed.
ISSN:	1424-8220 1424-8220