Development of a combined ultrasound and photoacoustic endoscopic probe

Wei Wei; Xiang Li; Qifa Zhou; K. Kirk Shung; Zhongping Chen

doi:10.1117/12.874505

22 February 2011 Development of a combined ultrasound and photoacoustic endoscopic probe

Wei Wei, Xiang Li, Qifa Zhou, K. Kirk Shung, Zhongping Chen

Proceedings Volume 7893, Endoscopic Microscopy VI; 789317 (2011) https://doi.org/10.1117/12.874505
Event: SPIE BiOS, 2011, San Francisco, California, United States

Abstract

For in vivo medical applications, endoscopy shows great potential for its minimally invasive manner, flexibility and close-up imaging characteristic. A miniaturized imaging probe combining ultrasound and photoacoustic endoscopy has been developed. The output of a 532-nm pulse laser was coupled into and delivered to the probe by a 200-micron-core multimode fiber. A 40 MHz ring shape ultrasound transducer was fabricated to receive pulse echo ultrasound and photoacoustic signals as well. The light-guiding optical fiber, the ring ultrasound transducer, and a mirror-based reflective material for the coaxial laser beam and ultrasound signal were integrated into the probe with a final packaged diameter of 2.5 mm. The performance of the probe was tested by imaging a graphite rod. The imaging ability of this dual-modality system was demonstrated by imaging the cross section of a rabbit aorta.

Citation Download Citation

Wei Wei, Xiang Li, Qifa Zhou, K. Kirk Shung, and Zhongping Chen "Development of a combined ultrasound and photoacoustic endoscopic probe", Proc. SPIE 7893, Endoscopic Microscopy VI, 789317 (22 February 2011); https://doi.org/10.1117/12.874505

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