Cancellation of coherent artifacts in OCT imaging

Daqing Piao; Quing Zhu; Niloy K. Dutta; Shikui Yan; Linda L. Otis

doi:10.1117/12.427899

23 May 2001 Cancellation of coherent artifacts in OCT imaging

Daqing Piao, Quing Zhu, Niloy K. Dutta, Shikui Yan, Linda L. Otis

Proceedings Volume 4251, Coherence Domain Optical Methods in Biomedical Science and Clinical Applications V; (2001) https://doi.org/10.1117/12.427899
Event: BiOS 2001 The International Symposium on Biomedical Optics, 2001, San Jose, CA, United States

Abstract

Coherent sidelobes of a source can severely degrade OCT image quality by introducing false targets if no targets are present at the sidelobe locations. Sidelobes can also add constructively or destructively to the targets that are present at the sidelobe locations. This constructive or destructive interference will result in cancellation of the true targets or display of incorrect echo amplitudes of the targets. We introduce the use of CLEAN, a nonlinear deconvolution algorithm, to cancel coherent sidelobes 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.

Citation Download Citation

Daqing Piao, Quing Zhu, Niloy K. Dutta, Shikui Yan, and Linda L. Otis "Cancellation of coherent artifacts in OCT imaging", Proc. SPIE 4251, Coherence Domain Optical Methods in Biomedical Science and Clinical Applications V, (23 May 2001); https://doi.org/10.1117/12.427899

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