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Proceedings Paper

Towards a miniatured all-fiber photoacoustic endoscope (Conference Presentation)

Paper Abstract

We present the all-fiber approach towards building a miniatured, optical-resolution photoacoustic endoscope. The catheter encapsulates two optical fibers for optical excitation and ultrasound detection, respectively. The ultrasound waves are detected with the laser-based fiber optic sensor, with a diameter of 125 μm, instead of a focused piezoelectric transducer. Photoacoustic endoscopic images from a rat rectum have been acquired in vivo with a range of 6.3 mm, a lateral resolution of 10 μm, and a 285° angular field-of-view. The catheter has a diameter of 2.3 mm and can be further reduced by replacing the bulk prism reflector.

Paper Details

Date Published: 20 April 2020
Proc. SPIE 11240, Photons Plus Ultrasound: Imaging and Sensing 2020, 112401M (20 April 2020); doi: 10.1117/12.2544151
Show Author Affiliations
Qiang Li, Jinan Univ. (China)
Yizhi Liang, Jinan Univ. (China)
Long Jin, Jinan Univ. (China)
Bai-Ou Guan, Jinan Univ. (China)

Published in SPIE Proceedings Vol. 11240:
Photons Plus Ultrasound: Imaging and Sensing 2020
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

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