Photoacoustic method for quantifying blood flow in bone

Caitlin Smith; Jami Shepherd; Kasper van Wijk; Guillaume Renaud

doi:10.1117/12.2644161

27 March 2023 Photoacoustic method for quantifying blood flow in bone

Caitlin Smith, Jami Shepherd, Kasper van Wijk, Guillaume Renaud

Proceedings Volume PC12379, Photons Plus Ultrasound: Imaging and Sensing 2023; PC123792G (2023) https://doi.org/10.1117/12.2644161
Event: SPIE BiOS, 2023, San Francisco, California, United States

Conference Poster

Abstract

Blood supply in bone plays a crucial role in bone growth and fracture healing. However, to accurately reconstruct photoacoustic images of blood in bone, we must consider the refraction experienced by acoustic waves when passing through bone. We utilise ultrasound to determine the heterogeneous wave speed model which is then used for refraction-corrected photoacoustic imaging. We further extend new photoacoustic velocimetry techniques by accounting for refraction to generate maps showing the location, speed and direction of flowing optical absorbers in bone models. This technique is validated on in vitro experimental data obtained from a blood-vessel phantom beneath a bone-mimicking plate.

Citation Download Citation

Caitlin Smith, Jami Shepherd, Kasper van Wijk, and Guillaume Renaud "Photoacoustic method for quantifying blood flow in bone", Proc. SPIE PC12379, Photons Plus Ultrasound: Imaging and Sensing 2023, PC123792G (27 March 2023); https://doi.org/10.1117/12.2644161

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