Photoacoustic imaging is historically limited to soft-tissues and cannot image the bone interior. However we have recently demonstrated accurate photoacoustic and ultrasonic imaging in a cortical bone model by accounting for both refraction and elastic anisotropy. In this presentation, we will present photoacoustic imaging results in a bone-mimicking replica and ex vivo bovine long bone. We will demonstrate the accuracy of our imaging approach compared to conventional imaging techniques. Further, we will discuss the results of a parametric spectroscopic study of the source laser wavelength and ultrasonic probe to optimise imaging depth and resolution.
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