An endoscopic optical coherence tomography (OCT) system based on a microelectromechanical mirror to facilitate lateral light scanning is described. The front-view OCT scope, adapted to the instrument channel of a commercial endoscopic sheath, allows real-time cross-sectional imaging of living biological tissue via direct endoscopic visual guidance. The transverse and axial resolutions of the OCT scope are roughly 20 and 10.2μm, respectively. Cross-sectional images of 500×1000 pixels covering an area of 2.9 mm×2.8 mm can be acquired at ~5 frames/s and with nearly 100-dB dynamic range. Applications in thickness measurement and bladder tissue imaging are demonstrated.
© 2001 Optical Society of America
(170.2150) Medical optics and biotechnology : Endoscopic imaging
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.3890) Medical optics and biotechnology : Medical optics instrumentation
(170.4500) Medical optics and biotechnology : Optical coherence tomography
(170.7230) Medical optics and biotechnology : Urology
Yingtian Pan, Huikai Xie, and Gary K. Fedder, "Endoscopic optical coherence tomography based on a microelectromechanical mirror," Opt. Lett. 26, 1966-1968 (2001)