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Proceedings Paper

Application of chromatic analysis for resolution improvement in optical coherence tomography (OCT)
Author(s): Christopher D. Russell; Tim J. Bullough; Gordon R. Jones; Neville Krasner M.D.; Karl J. Bamford
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Paper Abstract

In conventional optical coherence tomography (OCT) the resolution of the image is dependant on the spectral width and center wavelength of the light source. We investigate whether the application of chromatic analysis techniques and Gaussian peak fitting can provide an improved resolution to OCT images. OCT signals were simulated mathematically and analyzed to observe interference effects in the signal when considering two surfaces separated by less than the coherence length of the source. Chromatic analysis was then applied to identify the component interferograms within the signal. The peaks of these component interferograms were then found by fitting Gaussian peaks to the signal. Images of air wedges and onion slices were analyzed and improved resolution was shown in both cases. This work shows the potential for the use of chromatic techniques in improving the resolution of OCT images in tissue.

Paper Details

Date Published: 29 July 2004
PDF: 6 pages
Proc. SPIE 5486, ALT'03 International Conference on Advanced Laser Technologies: Biomedical Optics, (29 July 2004); doi: 10.1117/12.571472
Show Author Affiliations
Christopher D. Russell, Medical Laser Institute, Lasers for Life (United Kingdom)
Tim J. Bullough, Univ. of Liverpool (United Kingdom)
Gordon R. Jones, Univ. of Liverpool (United Kingdom)
Neville Krasner M.D., Medical Laser Institute, Lasers for Life (United Kingdom)
Karl J. Bamford, Medical Laser Institute, Lasers for Life (United Kingdom)


Published in SPIE Proceedings Vol. 5486:
ALT'03 International Conference on Advanced Laser Technologies: Biomedical Optics
Ruikang K. Wang; Jeremy C. Hebden; Alexander V. Priezzhev; Valery V. Tuchin, Editor(s)

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