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Split-spectrum amplitude-decorrelation angiography with optical coherence tomographyYali Jia, Ou Tan, Jason Tokayer, Benjamin Potsaid, Yimin Wang, Jonathan J. Liu, Martin F. Kraus, Hrebesh Subhash, James G. Fujimoto, Joachim Hornegger, and David Huang »View Author Affiliations
Yali Jia,1
Ou Tan,1
Jason Tokayer,2
Benjamin Potsaid,3,4
Yimin Wang,1
Jonathan J. Liu,3
Martin F. Kraus,3,5
Hrebesh Subhash,1
James G. Fujimoto,3
Joachim Hornegger,5
and David Huang1,*
1Casey Eye Institute, Oregon Health & Science University, Portland, OR 97239, USA 2Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA 3Department of Electrical Engineering and Computer Science, and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA 4Advanced Imaging Group, Thorlabs, Inc., Newton, NJ 07860, USA 5Pattern Recognition Lab, University Erlangen-Nuremberg, D-91058 Erlangen, Germany *Corresponding author: huangd@ohsu.edu |
Optics Express, Vol. 20, Issue 4, pp. 4710-4725 (2012)
http://dx.doi.org/10.1364/OE.20.004710
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Abstract
Amplitude decorrelation measurement is sensitive to transverse flow and immune to phase noise in comparison to Doppler and other phase-based approaches. However, the high axial resolution of OCT makes it very sensitive to the pulsatile bulk motion noise in the axial direction. To overcome this limitation, we developed split-spectrum amplitude-decorrelation angiography (SSADA) to improve the signal-to-noise ratio (SNR) of flow detection. The full OCT spectrum was split into several narrower bands. Inter-B-scan decorrelation was computed using the spectral bands separately and then averaged. The SSADA algorithm was tested on in vivo images of the human macula and optic nerve head. It significantly improved both SNR for flow detection and connectivity of microvascular network when compared to other amplitude-decorrelation algorithms.
© 2012 OSA
OCIS Codes
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.4470) Medical optics and biotechnology : Ophthalmology
(170.4500) Medical optics and biotechnology : Optical coherence tomography
ToC Category:
Medical Optics and Biotechnology
History
Original Manuscript: December 23, 2011
Revised Manuscript: January 24, 2012
Manuscript Accepted: January 29, 2012
Published: February 9, 2012
Virtual Issues
Vol. 7, Iss. 4 Virtual Journal for Biomedical Optics
Citation
Yali Jia, Ou Tan, Jason Tokayer, Benjamin Potsaid, Yimin Wang, Jonathan J. Liu, Martin F. Kraus, Hrebesh Subhash, James G. Fujimoto, Joachim Hornegger, and David Huang, "Split-spectrum amplitude-decorrelation angiography with optical coherence tomography," Opt. Express 20, 4710-4725 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-4-4710
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- R. Leitgeb, L. Schmetterer, W. Drexler, A. Fercher, R. Zawadzki, and T. Bajraszewski, “Real-time assessment of retinal blood flow with ultrafast acquisition by color Doppler Fourier domain optical coherence tomography,” Opt. Express11(23), 3116–3121 (2003). [CrossRef] [PubMed]
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- L. Laatikainen and J. Larinkari, “Capillary-free area of the fovea with advancing age,” Invest. Ophthalmol. Vis. Sci.16(12), 1154–1157 (1977). [PubMed]
- D. A. Robinson, “The mechanics of human saccadic eye movement,” J. Physiol.174(2), 245–264 (1964). [PubMed]
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