| 摘要 |
PROBLEM TO BE SOLVED: To provide a device and a method for multispectral photoacoustic imaging of an object.SOLUTION: The device comprises: an irradiation unit (10) configured to irradiate an object (1) with electromagnetic radiation at two or more different irradiation wavelengths (λ), the electromagnetic radiation having a time-varying intensity; a detection unit (20) configured to detect acoustic waves generated in the object (1) upon irradiation; and a processing unit (30) configured to reconstruct images of the object (1) based on the detected acoustic waves generated at each of the irradiation wavelengths (λ) and to determine a spatial distribution of at least one first concentration value, which relates to a concentration of at least one electromagnetic radiation absorber in the object (1). The determination of the spatial distribution of the at least one first concentration value is based on the reconstructed images at the different irradiation wavelengths (λ), on at least one wavelength-dependent extinction coefficient of the at least one electromagnetic radiation absorber in the object, and on a linear combination of at least two model spectra representing wavelength-dependent basis functions of a radiation fluence or of a normalized radiation fluence, in the object (1).SELECTED DRAWING: Figure 1 |
