A system for medical detection and treatment comprising a number of treatment andor detection devices which exchange data with each other within the context of a medical treatment, in particular a surgical or radiotherapeutic andor radiosurgical operation, wherein the data are exchanged via radio interfaces in andor on the devices. Within the overall enclosure are two sub-regions that are separated from each other by gas-tight paneling. Silane and oxygen are separately injected into the chamber generally centrally above the substrate from orifices.