Multispectral optoacoustic tomography
Multi-spectral optoacoustic tomography (MSOT), also known as functional photoacoustic tomography (fPAT), is an imaging technology that generates high-resolution optical images in scattering media, including biological tissues. MSOT illuminates tissue with light of transient energy, typically light pulses lasting 1-100 nanoseconds.
Source: Wikipedia — Multispectral optoacoustic tomography (CC BY-SA 4.0)