KEYWORDS: Imaging systems, Data acquisition, Optoacoustics, Transducers, Signal detection, Field programmable gate arrays, Signal processing, Pulsed laser operation
Optoacoustic tomography (OAT) is rapidly becoming an important tool in biological and clinical research. Current OAT system implementations commonly feature bulky and expensive hardware impeding wide-scale adoption. We introduce LightSpeed: a compact, high-speed, low-cost and configurable 3D optoacoustic imager based on an optical-link software-defined acquisition platform and fiber-coupled laser diode illumination. We demonstrate real-time imaging capability of the LightSpeed system by fast handheld scanning of human vasculature. LightSpeed attains image quality comparable to conventional data acquisition electronics at a fraction of hardware costs and significantly faster frame rates. It is then poised to result in new generation compact and high-performance handheld OAT scanners facilitating clinical translation.
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