Patent ID: 9207062
Filing Date: 2015-12-08
Classification: A61B,G01B

Abstract:
1. A 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 to receive said detection signals, construct a plurality of A-scans from said detection signals, and construct one or more images from said plurality of A-scans; wherein, for at least one A-scan of said plurality of A-scans, said data processing system is configured to calculate a Doppler phase shift of said at least one A-scan caused by net axial motion of at least one of said optical coherence tomography sensor or a target of said optical coherence tomography sensor during free-hand scanning, estimate said net axial motion using said calculated Doppler phase shift, and correct distortion in said one or more images caused by said net axial motion by shifting said at least one A-scan according to said estimate.