20 March 2013 Freehand OCT with real-time lateral motion tracking
Author Affiliations +
Abstract
Freehand optical coherence tomography (OCT) systems without mechanical scanners can offer greater freedom to access and image sites of interest. However, the scanning velocity during freehand scan is irregular; therefore pseudo B-scan images obtained by stacking sequentially acquired A-scans have a non-uniform spatial sampling rate in the lateral dimension. In this study, we developed a speckle decorrelation method to estimate lateral displacement between sequentially acquired A-scans and used the information extracted from speckle analysis to correct the time-varying lateral scanning speed. We applied this method to a handheld OCT probe and performed calibration experiments to validate our model. Furthermore we demonstrated distortion-free, freehand OCT imaging of various samples including human tissue, in vivo.
© (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Xuan Liu, Xuan Liu, Yong Huang, Yong Huang, Peter Gehlbach, Peter Gehlbach, Jin U. Kang, Jin U. Kang, } "Freehand OCT with real-time lateral motion tracking", Proc. SPIE 8571, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVII, 85711P (20 March 2013); doi: 10.1117/12.2006973; https://doi.org/10.1117/12.2006973
PROCEEDINGS
6 PAGES


SHARE
RELATED CONTENT


Back to Top