[Optical coherence tomography].

Optical coherence tomography (OCT) is a high-resolution imaging method for in vivo investigation of the human skin. In cross-sectional images of several millimeters length with a penetration depth of the light signal into deeper parts of the dermis, architectural details of the upper skin layers can be assessed and monitored non-invasively over time. The resolution is not high enough to visualize cellular details. Several studies have been performed using OCT to assess its significance as a diagnostic tool for dermatology. The actual technical configuration of OCT is suitable to assess therapeutic effects objectively and to observe skin changes over time.