Lateral distortion corrected optical coherence tomography system

摘要

A lateral-distortion corrected optical coherence tomography system. The system can include an optical coherence tomography sensor, a light source, a fiber-optic system arranged to provide a reference beam and an observation beam, an optical detection system arranged to receive combined light from the reference beam and the observation beam and to provide detection signals, and a data processing system arranged to communicate with the optical detection system and receive the detection signals. The data processing system can be configured to assemble an image corresponding to a scanning path by constructing a plurality of A-scans from the detection signals, determining displacement information from the plurality of A-scans, and arranging the plurality of A-scans according to the displacement information.

主权项

1. A lateral-distortion corrected optical coherence tomography system, comprising:
an optical coherence tomography sensor; a light source; a fiber-optic system optically coupled to said light source and said optical coherence tomography sensor, said fiber-optic system arranged to provide a reference beam and an observation beam; an optical detection system arranged to receive combined light from said reference beam and said observation beam, said optical detection system providing detection signals; and a data processing system arranged to communicate with said optical detection system and receive said detection signals, wherein said data processing system is configured to:
construct a plurality of A-scans from said detection signals;calculate a cross-correlation between adjacent A-scans of said plurality of A-scans;calculate a displacement between adjacent A-scans of said plurality of A-scans based on said cross-correlation between adjacent A-scans;add said calculated displacement between each of said adjacent A-scans to determine a total distance between a first A-scan and a last A-scan of said plurality of A-scans;divide said total distance by a preselected sampling interval to determine a plurality of spatial positions;interpolate said plurality of A-scans to obtain an A-scan corresponding to each of said plurality of spatial positions; andassemble an image from said plurality of interpolated A-scans.