High-resolution 3D OCT imaging with a MEMS scanning endoscope

Li S. Fan; Wibool Piyawattanametha; Ming C. Wu; Aaron D. Aguirre; Paul R. Herz; Yu Chen; James G. Fujimoto

doi:10.1117/12.600089

22 January 2005 High-resolution 3D OCT imaging with a MEMS scanning endoscope

Li S. Fan, Wibool Piyawattanametha, Ming C. Wu, Aaron D. Aguirre, Paul R. Herz, Yu Chen, James G. Fujimoto

Proceedings Volume 5719, MOEMS and Miniaturized Systems V; (2005) https://doi.org/10.1117/12.600089
Event: MOEMS-MEMS Micro and Nanofabrication, 2005, San Jose, California, United States

Abstract

Three-dimensional imaging is achieved by optical coherence tomography (OCT) integrated with a two-axis MEMS scanner to enable noninvasive volume imaging of biological tissues. The longitudinal scan is obtained by optical coherence interferometry. The transverse scan is obtained by tilting the two-axis MEMS mirror to scan the optical beam across the target. High-resolution OCT imaging has enabled in vivo observation of tissue architectural layers and differentiation of normal from tumor lesions within the human gastrointestinal tract. MEMS scanner based catheters with distal beam scanning can image with higher speed, precision, and repeatability than conventional linear scanning catheters. In this work, a 1-mm diameter MEMS scanning mirror with collimator and focusing optics is integrated into a compact 5-mm diameter package that is compatible with limited space in the endoscope. A large fill factor mirror provides high aperture over large scan angle and frequencies of hundreds of Hz in both axes. Using a broadband femtosecond laser light source, high axial image resolution of ~5 um is achieved at 1.06 um wavelength. Transverse resolution of ~ 12-um is demonstrated for cross-sectional image with the endoscope.

Citation Download Citation

Li S. Fan, Wibool Piyawattanametha, Ming C. Wu, Aaron D. Aguirre, Paul R. Herz, Yu Chen, and James G. Fujimoto "High-resolution 3D OCT imaging with a MEMS scanning endoscope", Proc. SPIE 5719, MOEMS and Miniaturized Systems V, (22 January 2005); https://doi.org/10.1117/12.600089

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available