Photoacoustic/ultrasonic dual-modality endoscope with a spherical hollow PVDF-based transducer

Ting Guo; Sihua Yang

doi:10.1117/12.2582663

5 March 2021 Photoacoustic/ultrasonic dual-modality endoscope with a spherical hollow PVDF-based transducer

Ting Guo, Sihua Yang

Proceedings Volume 11643, Biophotonics and Immune Responses XVI; 116430I (2021) https://doi.org/10.1117/12.2582663
Event: SPIE BiOS, 2021, Online Only

Abstract

Dual-modality photoacoustic/ultrasonic endoscopy has shown to be effective in the identification and staging of colorectal intramural tumors. In this study, we proposed a dual-modality endoscope with a spherical hollow PVDF-based transducer, which achieves center frequency of 34 MHz and -6 dB bandwidth of 15-60 MHz. The PVDF-based transducer will enable the system to achieve a large radial imaging range of more than 1 cm. In vivo imaging of the rabbit rectum proved that the dual-modality endoscope has the ability to perform the tissue stratification of the intestinal wall and the high-resolution visualization of the intestinal wall vascular network.

Conference Presentation

Citation Download Citation

Ting Guo and Sihua Yang "Photoacoustic/ultrasonic dual-modality endoscope with a spherical hollow PVDF-based transducer", Proc. SPIE 11643, Biophotonics and Immune Responses XVI, 116430I (5 March 2021); https://doi.org/10.1117/12.2582663

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