Internal radiation is applied via 15 to 18 hollow needles, which are inserted into the prostate. The needles are placed in peridural anaesthesia and with the help of transrectal ultrasoound. The dosage is calculated during treatment. After application of the radiation dose the needles are removed. The procedure is repeated after one week and the distribution of the needles is calculated again according to the changes produced in the prostate.
External radiation follows at an interval of one week.
Patients are followed at three month intervals, especially for checking the PSA concentration. Biopsies from the prostate are recommended at one or two years after therapy.