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6 October 2021 Real-time all-optical ultrasound imaging of a dynamic heart valve phantom
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All-optical ultrasound imaging, in which ultrasound is generated and received using light, is well-suited to minimally invasive surgical procedures. Here we present a device that can provide real-time M-mode ultrasound images, and demonstrate its use imaging a dynamic heart valve phantom. This device, comprising two optical fibres, one with a graphene-polydimethylsiloxane composite coating for ultrasound generation, and a second with a concave Fabry-Perot cavity for ultrasound reception, had a diameter of < 1 mm. This provided a wide ultrasound transmission bandwidth (> 30 MHz) that enabled imaging with high axial resolution (< 50 μm) and large imaging depths (> 2 cm). M-mode imaging with an A-line rate of 100 Hz was demonstrated on a heart valve phantom with realistic mitral valve motion. This work demonstrates the potential for all-optical ultrasound imaging to be used for guidance of intracardiac interventions.
Conference Presentation
© (2021) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Richard J. Colchester, John T. Moore, Terry M. Peters, Malcolm C. Finlay, and Adrien E. Desjardins "Real-time all-optical ultrasound imaging of a dynamic heart valve phantom", Proc. SPIE 11879, Frontiers in Biophotonics and Imaging, 1187908 (6 October 2021);

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