Artifact removal in Fourier-domain OCT with a rotating probe

Sébastien Vergnole; Guy Lamouche; Marc L. Dufour; Bruno Gauthier; Christian Padioleau

doi:10.1117/12.761811

21 February 2008 Artifact removal in Fourier-domain OCT with a rotating probe

Sébastien Vergnole, Guy Lamouche, Marc L. Dufour, Bruno Gauthier, Christian Padioleau

Proceedings Volume 6851, Endoscopic Microscopy III; 68510G (2008) https://doi.org/10.1117/12.761811
Event: SPIE BiOS, 2008, San Jose, California, United States

Abstract

This paper reports the study of a Swept Source Optical Coherence Tomography (SS-OCT) setup to remove depth degeneracy for measurements performed with a rotating probe. One of the main drawbacks of SS-OCT is its inability to differentiate positive and negative depths. Some setups have already been proposed to remove this depth ambiguity by introducing a modulation by means of electro-optic or acousto-optic modulators. For cross-sectional imaging, we developed a setup that uses a piezoelectric fiber stretcher to generate a periodic phase shift between successive A-scans, thus introducing a transverse modulation. The depth ambiguity is then resolved by performing a Fourier processing in the transverse direction before processing the data in the axial direction. This approach can also be applied to a rotating probe with a cylindrical geometry by introducing phase shifts between A-scans belonging to successive rotations or between successive B-scans. In the later case, the depth degeneracy is removed by first performing a Fourier processing along the cylindrical axis. We validate this approach by processing images acquired with our catheterized probe based on a rotating fiber and fitted with a GRIN lens and a prism at the tip.

Citation Download Citation

Sébastien Vergnole, Guy Lamouche, Marc L. Dufour, Bruno Gauthier, and Christian Padioleau "Artifact removal in Fourier-domain OCT with a rotating probe", Proc. SPIE 6851, Endoscopic Microscopy III, 68510G (21 February 2008); https://doi.org/10.1117/12.761811

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available