An apparatus for supporting a brachytherapy includes at least one radiation means, at least one dose measuring means, and a processing unit. The at least one dose measuring means is configured to be introduced into a target area of an object under treatment which includes at least one target object and that is designed to measure radioactive radiation originating from the at least one radiation means, which is introduced into the target area of the object under treatment, and to provide the measured values by way of a means of transmission to the processing unit.