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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 22 — Oct. 24, 2011
  • pp: 21258–21270

Motion correction for phase-resolved dynamic optical coherence tomography imaging of rodent cerebral cortex

Jonghwan Lee, Vivek Srinivasan, Harsha Radhakrishnan, and David A. Boas  »View Author Affiliations


Optics Express, Vol. 19, Issue 22, pp. 21258-21270 (2011)
http://dx.doi.org/10.1364/OE.19.021258


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Abstract

Cardiac and respiratory motions in animals are the primary source of image quality degradation in dynamic imaging studies, especially when using phase-resolved imaging modalities such as spectral-domain optical coherence tomography (SD-OCT), whose phase signal is very sensitive to movements of the sample. This study demonstrates a method with which to compensate for motion artifacts in dynamic SD-OCT imaging of the rodent cerebral cortex. We observed that respiratory and cardiac motions mainly caused, respectively, bulk image shifts (BISs) and global phase fluctuations (GPFs). A cross-correlation maximization-based shift correction algorithm was effective in suppressing BISs, while GPFs were significantly reduced by removing axial and lateral global phase variations. In addition, a non-origin-centered GPF correction algorithm was examined. Several combinations of these algorithms were tested to find an optimized approach that improved image stability from 0.5 to 0.8 in terms of the cross-correlation over 4 s of dynamic imaging, and reduced phase noise by two orders of magnitude in ~8% voxels.

© 2011 OSA

OCIS Codes
(170.3010) Medical optics and biotechnology : Image reconstruction techniques
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.4500) Medical optics and biotechnology : Optical coherence tomography

ToC Category:
Medical Optics and Biotechnology

History
Original Manuscript: April 1, 2011
Revised Manuscript: June 16, 2011
Manuscript Accepted: June 21, 2011
Published: October 12, 2011

Virtual Issues
Vol. 6, Iss. 11 Virtual Journal for Biomedical Optics

Citation
Jonghwan Lee, Vivek Srinivasan, Harsha Radhakrishnan, and David A. Boas, "Motion correction for phase-resolved dynamic optical coherence tomography imaging of rodent cerebral cortex," Opt. Express 19, 21258-21270 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-22-21258


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