Swept source optical coherence tomography of objects with arbitrary reflectivity profiles

Biniyam Mezgebo; Karim Nagib; Namal Fernando; Behzad Kordi; Sherif Sherif

doi:10.1117/12.2283016

5 March 2018 Swept source optical coherence tomography of objects with arbitrary reflectivity profiles

Biniyam Mezgebo, Karim Nagib, Namal Fernando, Behzad Kordi, Sherif Sherif

Author Affiliations +

Proceedings Volume 10591, 2nd Canterbury Conference on OCT with Emphasis on Broadband Optical Sources; 105910N (2018) https://doi.org/10.1117/12.2283016
Event: Second Canterbury Conference on Optical Coherence Tomography, 2017, Canterbury, United Kingdom

Abstract

Swept Source optical coherence tomography (SS-OCT) has become a well established imaging modality for both medical and industrial diagnostic applications. A cross-sectional SS-OCT image is obtained by applying an inverse discrete Fourier transform (DFT) to axial interferogram measured in the frequency domain (k-space). Fourier inversion of the obtained interferogram typically produces a potentially overlapping conjugate mirror image, whose overlap could be avoided by restricting the object to have its highest reflectivity at its surface. However, this restriction may not be fulfilled when imaging a very thin object that is placed on a highly reflective surface, or imaging an object containing a contrast agent with high reflectivity. In this paper, we show that oversampling of the SS-OCT signal in k-space would overcome the need for such restriction on the object. Our result is demonstrated using SS-OCT images of Axolotl salamander eggs.

Citation Download Citation

Biniyam Mezgebo, Karim Nagib, Namal Fernando, Behzad Kordi, and Sherif Sherif "Swept source optical coherence tomography of objects with arbitrary reflectivity profiles", Proc. SPIE 10591, 2nd Canterbury Conference on OCT with Emphasis on Broadband Optical Sources, 105910N (5 March 2018); https://doi.org/10.1117/12.2283016

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