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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 40, Iss. 28 — Oct. 1, 2001
  • pp: 5124–5131

Cancellation of coherent artifacts in optical coherence tomography imaging

Daqing Piao, Quing Zhu, Niloy K. Dutta, Shikui Yan, and Linda L. Otis  »View Author Affiliations


Applied Optics, Vol. 40, Issue 28, pp. 5124-5131 (2001)
http://dx.doi.org/10.1364/AO.40.005124


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Abstract

Coherent artifacts in optical coherence tomography (OCT) images can severely degrade image quality by introducing false targets if no targets are present at the artifact locations. Coherent artifacts can also add constructively or destructively to the targets that are present at the artifact locations. This constructive or destructive interference will result in cancellation of the true targets or in display of incorrect echo amplitudes of the targets. We introduce the use of a nonlinear deconvolution algorithm, CLEAN, to cancel coherent artifacts in OCT images of extracted human teeth. The results show that CLEAN can reduce the coherent artifacts to the noise background, sharpen the air–enamel and enamel–dentin interfaces, and improve the image contrast.

© 2001 Optical Society of America

OCIS Codes
(170.1850) Medical optics and biotechnology : Dentistry
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.3890) Medical optics and biotechnology : Medical optics instrumentation
(170.4500) Medical optics and biotechnology : Optical coherence tomography

History
Original Manuscript: December 18, 2000
Revised Manuscript: April 26, 2001
Published: November 1, 2001

Citation
Daqing Piao, Quing Zhu, Niloy K. Dutta, Shikui Yan, and Linda L. Otis, "Cancellation of coherent artifacts in optical coherence tomography imaging," Appl. Opt. 40, 5124-5131 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-28-5124


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