Real-time quadrature projection complex conjugate resolved Fourier domain optical coherence tomography

Opt Lett. 2006 Aug 15;31(16):2426-8. doi: 10.1364/ol.31.002426.

Abstract

We present a novel algorithm for full-range imaging by suppression of the complex conjugate artifact in phase-shifting Fourier domain optical coherence tomography. This technique utilizes the projection of multiple phase-shifted interferograms onto an orthogonal basis set to reconstruct the complex interferogram. Full-range imaging with >30 dB suppression of the symmetric artifact is demonstrated using a 3 x 3 fiber coupler swept source OCT system, providing a depth range of 6.6mm with -8 dB roll-off in sensitivity at the depth boundaries relative to DC. Real-time display of full-range images of the anterior segment of the human eye acquired in vivo at a line rate of 6.67 kHz are presented.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Algorithms*
  • Computer Systems
  • Fourier Analysis
  • Humans
  • Image Enhancement / methods*
  • Image Interpretation, Computer-Assisted / methods*
  • Information Storage and Retrieval / methods*
  • Reproducibility of Results
  • Retina / cytology
  • Sensitivity and Specificity
  • Tomography, Optical Coherence / methods*