Real-time surface tracking system using common-path spectral domain optical coherence tomography

Keo-Sik Kim; Hyoung-Jun Park; Hyun Seo Kang; Jin U. Kang; Chul-Gyu Song

doi:10.1117/1.OE.51.11.113203

5 November 2012 Real-time surface tracking system using common-path spectral domain optical coherence tomography

Keo-Sik Kim, Hyoung-Jun Park, Hyun Seo Kang, Jin U. Kang, Chul-Gyu Song

Author Affiliations +

Optical Engineering, Vol. 51, Issue 11, 113203 (November 2012). https://doi.org/10.1117/1.OE.51.11.113203

Abstract

An enhanced surface tracking system based on optical coherence tomography (OCT) modality has been developed and tested for use in a surgical guidance system. A surface detection algorithm based on a Savitzky-Golay filter of A-scan data and thresholding was applied to real-time depth tracking. The algorithm output controlled a motorized stage to adjust the probe position according to the sample's topological variance in real-time. As a result, the root mean square error (RMSE: 4.2 μm) of our algorithm was relatively lower than the conventional method (RMSE: 16.6 μm). Also, OCT images obtained using the algorithm showed a significantly extended imaging range and active surface tracking in real time. Consequently, the devised method demonstrated potential for use in systems for guiding surgical robots and endoscopic OCT.

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Keo-Sik Kim, Hyoung-Jun Park, Hyun Seo Kang, Jin U. Kang, and Chul-Gyu Song "Real-time surface tracking system using common-path spectral domain optical coherence tomography," Optical Engineering 51(11), 113203 (5 November 2012). https://doi.org/10.1117/1.OE.51.11.113203

Published: 5 November 2012

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