Process and means for representation of structures

摘要

The invention relates to a process and a means for representing structures (ST) which are predominantly biological, or have been technically produced. The process enables the representation of inhomogeneous structures (ST) in situ in real-time operation. It can be used to produce IR and NIR tomograms, and to determine the volumetric flow in capillaries and filters, and can be employed in medicine, biology and technology in order to observe and assess structures (ST), surfaces, volumes and volumetric flows in which chemical and physical processes take place. According to the invention, the IR light sources and receivers that are arranged in a one plane are guided as large-area radiators and receivers (SE) with respect to the object in the x-y-z direction, the large-area radiator radiating with a specific radiation cross-section and a specific intensity, the emitting IR diodes being driven with a peak current of preferably up to 1A at a pulse frequency of preferably up to 100 kHz, and the backscattering being detected. Together with the arrangement of the sensor (SE) for the large-area radiator/receiver, profiles, determined in real time, of the IR attenuation gradients of the volumetric elements permit an exact spatial assignment of the volumetric elements in the micrometre to centimetre range and a contrast representation of specific structures (ST).