Phantom for testing a time-resolved diffuse optical spectroscopic measuring device, in particular a tissue oximeter, and method for testing a device for time-resolved diffuse optical spectroscopy on tissue

摘要

The invention relates to a phantom (28) for testing a measuring instrument for time-resolved diffuse optical spectroscopy, in particular a tissue oximeter, comprising: (a) an input optics having at least one light feed line (32), (b) a filter device (34) arranged in a light flow direction behind the at least one light feed line (32) and (C) in the light flow direction behind the filter device (34) arranged light-discharges, which are arranged to the filter device (34), that for each of the light-derivatives (40) the light detected by her by the filter device (34) individually filterable and which are further merged to collect the light exiting the filter device (34), such that after illumination of the input optics (30) with an input light pulse (12) output photons (16) having a predetermined photon time distribution (22) escape, (d) wherein the optical paths (w _i ) for light, which is passed through different light derivatives (40), differ so that an output pulse length of the photon runtime distribution (22) is greater than an input pulse length of Input light pulse (12) and (e) wherein the light derivatives (40) and the filter device are designed such that a photon transit time distribution (22) corresponds to the photon transit time distribution caused by tissue (10).