Arc-shape Light-rotatable Photoacoustic Probe for Peripheral Vessel Imaging

Peripheral vessel imaging plays an important role in the assessment, treatment, and monitoring of cardiovascular diseases. Using photoacoustic imaging technology to perform peripheral vessel imaging is a potential and novel medical imaging method that visualizes the human body's peripheral blood vessels. This method can non-invasively image the vascular system in areas such as the hands and arms. To promote the clinical application of this technology, we propose an arc-shaped light-rotatable photoacoustic tomography system that can achieve multi-angle light illumination, which penetrate deeper and produce stronger photoacoustic signals. Both phantom and forearm in vivo experiments have been conducted to verify the feasibility of the proposed system. The experimental results demonstrate that the system is capable of acquiring multi-angle light illumination and more information, achieving high-quality images, and being portable.