Method and device for non-invasive tomographic characterisation of a sample comprising a plurality of differentiated tissues

A device for non-invasive tomographic metabolite characterization of a vegetable or animal sample to be characterized, the sample comprising a plurality of differentiated tissues from a set of previously characterized differentiated tissues, comprising a computer processor and a non-transitory computer-readable medium comprising a multidimensional latent structure model of differentiated tissues, which was previously obtained by:

• scanning tissue samples belonging to each differentiated tissue of the set with a hyperspectral microscope and spectrometer;
• acquiring hyperspectral spectrum or spectra for each differentiated tissue sample from the hyperspectral microscope and spectrometer;
• analysing the same tissue samples for the metabolites to be characterized;
• and
• calculating the latent structure model from the acquired spectra and analysed metabolites;
• wherein the computer processor is configured for:
• spatially scanning the sample to be characterized with a hyperspectral point-of-measurement, POM, optical device and a spectrometer;
• acquiring hyperspectral spectrum or spectra from each of a plurality of spatial positions and/or orientations of the POM optical device and spectrometer in respect of the sample to be characterized;
• and
• using the previously obtained model to deconvolute the metabolites to be characterized for each of the differentiated tissues from the acquired spectra.