Share Email Print
cover

Proceedings Paper

Artifact removal in Fourier-domain OCT with a rotating probe
Author(s): Sébastien Vergnole; Guy Lamouche; Marc L. Dufour; Bruno Gauthier; Christian Padioleau
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper 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.

Paper Details

Date Published: 21 February 2008
PDF: 8 pages
Proc. SPIE 6851, Endoscopic Microscopy III, 68510G (21 February 2008); doi: 10.1117/12.761811
Show Author Affiliations
Sébastien Vergnole, IMI-NRC (Canada)
Guy Lamouche, IMI-NRC (Canada)
Marc L. Dufour, IMI-NRC (Canada)
Bruno Gauthier, IMI-NRC (Canada)
Christian Padioleau, IMI-NRC (Canada)


Published in SPIE Proceedings Vol. 6851:
Endoscopic Microscopy III
Guillermo J. Tearney; Thomas D. Wang, Editor(s)

© SPIE. Terms of Use
Back to Top