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Journal of Biomedical Optics • Open Access • new

Correction of motion artifacts in endoscopic optical coherence tomography and autofluorescence images based on azimuthal en face image registration
Author(s): Elham Abouei; Anthony M. D. Lee; Hamid Pahlevaninezhad; Geoffrey Hohert; Michelle Cua; Pierre Lane; Stephen Lam; Calum MacAulay

Paper Abstract

We present a method for the correction of motion artifacts present in two- and three-dimensional in vivo endoscopic images produced by rotary-pullback catheters. This method can correct for cardiac/breathing-based motion artifacts and catheter-based motion artifacts such as nonuniform rotational distortion (NURD). This method assumes that en face tissue imaging contains slowly varying structures that are roughly parallel to the pullback axis. The method reduces motion artifacts using a dynamic time warping solution through a cost matrix that measures similarities between adjacent frames in en face images. We optimize and demonstrate the suitability of this method using a real and simulated NURD phantom and in vivo endoscopic pulmonary optical coherence tomography and autofluorescence images. Qualitative and quantitative evaluations of the method show an enhancement of the image quality.

Paper Details

Date Published: 4 January 2018
PDF: 13 pages
J. Biomed. Opt. 23(1) 016004 doi: 10.1117/1.JBO.23.1.016004
Published in: Journal of Biomedical Optics Volume 23, Issue 1
Show Author Affiliations
Elham Abouei, The Univ. of British Columbia (Canada)
BC Cancer Research Ctr. (Canada)
Anthony M. D. Lee, BC Cancer Research Ctr. (Canada)
Hamid Pahlevaninezhad, BC Cancer Research Ctr. (Canada)
Geoffrey Hohert, BC Cancer Research Ctr. (Canada)
Michelle Cua, BC Cancer Research Ctr. (Canada)
Pierre Lane, BC Cancer Research Ctr. (Canada)
Stephen Lam, BC Cancer Research Ctr. (Canada)
Calum MacAulay, BC Cancer Research Ctr. (Canada)


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