Photoacoustic tomography (PAT) is a hybrid imaging technique that combines optical illumination with ultrasound detection for high-resolution imaging of deep tissues. Utilizing the photoacoustic (PA) effect, PAT provides a distinct advantage with scalable resolution, higher imaging depth, and high contrast imaging. It uses nanosecond laser pulses to illuminate the tissue of interest, enabling their chromophores to absorb the incident laser energy. This results in a local temperature rise and generates pressure waves that propagate to the tissue boundary as ultrasound waves. These PA waves are then acquired with the help of an ultrasound transducer and converted into internal absorption maps using reconstruction algorithms.