Method and device for characterising biological tissue

摘要

The invention relates to a method and a device for conjunctively determining the content of a first chromophorous and fluorescent compound and a second chromophorous compound in a biological tissue (30). The determination of the chromophorous and fluorescent compound (33) content is carried out by optically measuring the differential absorption of said chromophorous and fluorescent compound (33) and the determination of the of the content of the second chromophorous compound (34) is carried out by optically measuring the fluorescence of the chromophorous and fluorescent compound (33). The invention uses optical adequately selected radiation (11-14) in combination with at least one filtration operation of said radiation adapted so as to use unique detection and measuring means (21) for both determinations.