Line-scanning fiber bundle endomicroscopy with a virtual detector slit

Hughes, Michael and Yang, Guang-Zhong (2016) Line-scanning fiber bundle endomicroscopy with a virtual detector slit. Biomedical Optics Express, 7 (6). pp. 2257-2268. ISSN 2156-7085. (doi:https://doi.org/10.1364/BOE.7.002257) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
https://doi.org/10.1364/BOE.7.002257

Abstract

Coherent fiber bundles can be used to relay the image plane from the distal tip of an endomicroscope to an external confocal microscopy system. The frame rate is therefore determined by the speed of the microscope’s laser scanning system which, at 10-20 Hz, may be undesirably low for in vivo clinical applications. Line-scanning allows an increase in the frame rate by an order of magnitude in exchange for some loss of optical sectioning, but the width of the detector slit cannot easily be adapted to suit different imaging conditions. The rolling shutter of a CMOS camera can be used as a virtual detector slit for a bench-top line-scanning confocal microscope, and here we extend this idea to endomicroscopy. By synchronizing the camera rolling shutter with a scanning laser line we achieve confocal imaging with an electronically variable detector slit. This architecture allows us to acquire every other frame with the detector slit offset by a known distance, and we show that subtracting this second image leads to improved optical sectioning.

Item Type: Article
Divisions: Faculties > Sciences > School of Physical Sciences
Faculties > Sciences > School of Physical Sciences > Applied Optics Group
Depositing User: Michael Hughes
Date Deposited: 06 Apr 2017 14:05 UTC
Last Modified: 07 Apr 2017 10:36 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/61180 (The current URI for this page, for reference purposes)
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