FREMGANGSMÅDE TIL VÆVSANALYSE

A process for non-invasively analyzing a target with an analysis apparatus comprising:- an intensity-modulation device, a light emitter emitting an intensity-modulated light at a controllable modulation frequency,- a detection cell comprising a sensor sensing directly or indirectly a thermal wave propagating out of the target in response to an irradiation of said target by the light emitted,- a processor module configured to receive and process sensor data from at least one detection cell.The process comprises carrying out at least two irradiations of the target with the light emitter in a first mode, the modulation frequency of the intensity of the light emitted being swept during each of the irradiations in the first mode over a frequency sweep range, and the processor module receiving sensor data from a detection cell for each of the at least one irradiation in the first mode and forming with the processor module a time series comprising sensor data for each of a plurality of discrete frequencies in the frequency sweep range.