Michel Manfait

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Raman spectra are classically modeled as a linear mixing of spectra of molecular constituents of the analyzed sample. Source separation methods are thus well suited to estimate these constituent spectra. However, physical distortions due to the instrumentation and biological nature of samples add nonlinearities to the Raman spectra model. These distortions(More)
During aging, alterations of extracellular matrix proteins contribute to various pathological phenotypes. Among these alterations, type I collagen cross-linking and associated glycation products accumulation over time detrimentally affects its physico-chemical properties, leading to alterations of tissue biomechanical stability. Here, different-age collagen(More)
Background Fourier transform mid-infrared (FT–IR) microspectro-scopy is a label-free optical method based on the interaction between an incident light beam and matter. This vibrational spectroscopy permits to probe the biochemical composition of the analyzed sample and thus gives information about the structure of this sample. Associated with an imaging(More)
Mid-Infrared (IR) micro-spectral imaging is an efficient method to analyze molecular composition of biomedical samples. In clinical oncology, this non-invasive technique is generally used on frozen biopsies to localize and diagnose cancerous tissues in their early stages. However, samples are usually fixed in paraffin in order to be preserved from decay,(More)