Helmholtz Zentrum Munchen Deutsches Forschungszentrum Fur Gesundheit Und Umwelt

Ludwig Prade

Vasilis Ntziachristos

The invention relates to a device and a method for optoacoustic sensing, wherein an irradiation unit is configured to generate at least one train of periodic pulses of electromagnetic energy, the pulses of the at least one train of periodic pulses exhibiting a pulse duration and repetition rate, and to irradiate a target with the generated train of periodic pulses. A detection unit is configured to detect acoustic waves generated in the target and to generate an according detection signal, the detection signal comprising, for each train of the at least one train of periodic pulses, detection signal components at a plurality of discrete frequencies in the frequency domain, the discrete frequencies being spaced from each other by a frequency spacing corresponding to the repetition rate of the pulses of the at least one train of periodic pulses. Further, a processing unit is configured to modify the detection signal in the frequency domain to obtain a modified detection signal, and to derive at least one property of the target based on the modified detection signal.

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Edinburgh, United Kingdom

Ludwig Prade