Three dimensional tracking for volumetric spectral-domain optical coherence tomography
Optics Express, Vol. 15, Issue 25, pp. 16808-16817 (2007)
http://dx.doi.org/10.1364/OE.15.016808
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Abstract
We present a three-dimensional (3D) tracker for a clinical ophthalmic spectral domain optical coherence tomography (SD-OCT) system that combines depth-tracking with lateral tracking, providing a stabilized reference frame for 3D data recording and post acquisition analysis. The depth-tracking system is implemented through a real-time dynamic feedback mechanism to compensate for motion artifact in the axial direction. Active monitoring of the retina and adapting the reference arm of the interferometer allowed the whole thickness of the retina to be stabilized to within ±100 µm. We achieve a relatively constant SNR from image to image by stabilizing the image of the retina with respect to the depth dependent sensitivity of SD-OCT. The depth tracking range of our system is 5.2 mm in air and the depth is adjusted every frame. Enhancement in the stability of the images with the depth-tracking algorithm is demonstrated on a healthy volunteer.
© 2007 Optical Society of America
OCIS Codes
(110.6880) Imaging systems : Three-dimensional image acquisition
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.3890) Medical optics and biotechnology : Medical optics instrumentation
(170.4470) Medical optics and biotechnology : Ophthalmology
(170.4500) Medical optics and biotechnology : Optical coherence tomography
(200.4560) Optics in computing : Optical data processing
ToC Category:
Imaging Systems
History
Original Manuscript: August 17, 2007
Revised Manuscript: November 14, 2007
Manuscript Accepted: November 18, 2007
Published: December 3, 2007
Virtual Issues
Vol. 3, Iss. 1 Virtual Journal for Biomedical Optics
Citation
Gopi Maguluri, Mircea Mujat, B. H. Park, K. H. Kim, Wei Sun, N. V. Iftimia, R. D. Ferguson, Daniel X. Hammer, Teresa C. Chen, and Johannes F. de Boer, "Three dimensional tracking for volumetric spectral-domain optical coherence tomography," Opt. Express 15, 16808-16817 (2007)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=oe-15-25-16808
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