Photoacoustic/ultrasound endoscopy based on fiber optics

Yizhi Liang; Qi Zhang; Long Jin; Bai-ou Guan

doi:10.1117/12.3003834

13 March 2024 Photoacoustic/ultrasound endoscopy based on fiber optics

Yizhi Liang, Qi Zhang, Long Jin, Bai-ou Guan

Proceedings Volume PC12842, Photons Plus Ultrasound: Imaging and Sensing 2024; PC128420S (2024) https://doi.org/10.1117/12.3003834
Event: SPIE BiOS, 2024, San Francisco, California, United States

Abstract

Optical fiber enables the implementation of flexible medical endoscopes. Here, we present the development of fiber-optic endoscopic ultrasound, which utilizes laser pulse absorption to generate ultrasound waves and a fiber-optic acoustic sensor to detect echo waves. Compared to its piezoelectric counterpart, the fiber-optic sensor has a significantly higher detection sensitivity and broader bandwidth. As a result, we were able to perform in vivo rotational-scanning (or B-mode) imaging of the gastrointestinal tract and extraluminal structures of a rat with an operating frequency of 20 MHz, an imaging depth of 2 cm, and a frame rate of 1 Hz.

Conference Presentation

Citation Download Citation

Yizhi Liang, Qi Zhang, Long Jin, and Bai-ou Guan "Photoacoustic/ultrasound endoscopy based on fiber optics", Proc. SPIE PC12842, Photons Plus Ultrasound: Imaging and Sensing 2024, PC128420S (13 March 2024); https://doi.org/10.1117/12.3003834

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