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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 7, Iss. 9 — Aug. 28, 2012

Distortion-free freehand-scanning OCT implemented with real-time scanning speed variance correction

Xuan Liu, Yong Huang, and Jin U. Kang  »View Author Affiliations

Optics Express, Vol. 20, Issue 15, pp. 16567-16583 (2012)

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Hand-held OCT systems that offer physicians greater freedom to access imaging sites of interest could be useful for many clinical applications. In this study, by incorporating the theoretical speckle model into the decorrelation function, we have explicitly correlated the cross-correlation coefficient to the lateral displacement between adjacent A-scans. We used this model to develop and study a freehand-scanning OCT system capable of real-time scanning speed correction and distortion-free imaging—for the first time to the best our knowledge. To validate our model and the system, we performed a series of calibration experiments. Experimental results show that our method can extract lateral scanning distance. In addition, using the manually scanned hand-held OCT system, we obtained OCT images from various samples by freehand manual scanning, including images obtained from human in vivo.

© 2012 OSA

OCIS Codes
(030.6140) Coherence and statistical optics : Speckle
(120.5800) Instrumentation, measurement, and metrology : Scanners
(170.4500) Medical optics and biotechnology : Optical coherence tomography
(330.4150) Vision, color, and visual optics : Motion detection

ToC Category:
Medical Optics and Biotechnology

Original Manuscript: May 24, 2012
Revised Manuscript: June 23, 2012
Manuscript Accepted: June 29, 2012
Published: July 6, 2012

Virtual Issues
Vol. 7, Iss. 9 Virtual Journal for Biomedical Optics

Xuan Liu, Yong Huang, and Jin U. Kang, "Distortion-free freehand-scanning OCT implemented with real-time scanning speed variance correction," Opt. Express 20, 16567-16583 (2012)

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