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From bench to bedside with advanced dual-axes confocal microendoscope

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5 Author(s)
Piyawattanametha, W. ; Edward L. Ginzton Lab., Stanford Univ., Stanford, CA, USA ; Ra, H. ; Mandella, M.J. ; Contag, C.H.
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This paper describes the design, and implementation of novel dual-axes confocal microscopes that use separate optical axes for illumination and collection of light. This configuration can achieve subcellular resolution (< 5 ¿m) with deep tissue penetration (> 300 ¿m), high dynamic range, and large field of view. Moreover, scalability down to millimeter dimensions with a diffraction limited focal volume is achieved with use of post-objective scanning, a MEMS (micro-electro-mechanical systems) micro-mirror, and fiber optic coupling. The miniature DAC microscope operating at 785-nm-wavelength achieves full-width-half-maximum (FWHM) transverse and axial resolutions of 5 ¿m and 6 ¿m, respectively. This instrument can be used to perform real time histopathology in the epithelium of hollow organs for longitudinal studies in small animals.

Published in:

Micro Electro Mechanical Systems (MEMS), 2010 IEEE 23rd International Conference on

Date of Conference:

24-28 Jan. 2010