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Proceedings Paper

In vivo imaging with GRIN-lens optical resolution photoacoustic micro-endoscopy
Author(s): Parsin Hajireza; Wei Shi; Alexander Forbrich; Peng Shao; Roger J. Zemp
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Paper Abstract

In this paper we introduce a novel optical resolution photoacoustic micro-endoscopy system using GRIN-lens focusing. This real-time imaging system takes advantage of an image guide fiber consisting of 100,000 individual single-mode fibers in a 1.4-mm-diameter bundle, and a 532-nm fiber laser with repetition-rates as high as 600 kHz. Fast scanning mirrors were used to scan the entire image guide fiber allowing for the maximum field-of-view. The ability of the proposed system is demonstrated using both phantom and in vivo studies. The system offers <7 μm lateral spatial resolution and several volumetric/C-scans per second frame-rate. The proposed setup can be inserted into the body due to the flexible nature of the image guide and micron-scale footprint of the apparatus.

Paper Details

Date Published: 23 February 2012
PDF: 6 pages
Proc. SPIE 8223, Photons Plus Ultrasound: Imaging and Sensing 2012, 82230I (23 February 2012); doi: 10.1117/12.909058
Show Author Affiliations
Parsin Hajireza, Univ. of Alberta (Canada)
Wei Shi, Univ. of Alberta (Canada)
Alexander Forbrich, Univ. of Alberta (Canada)
Peng Shao, Univ. of Alberta (Canada)
Roger J. Zemp, Univ. of Alberta (Canada)

Published in SPIE Proceedings Vol. 8223:
Photons Plus Ultrasound: Imaging and Sensing 2012
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

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