[Principles of fractionated total body irradiation before bone marrow transplantation].

The hyperfractioned total body irradiation has advantages in tumor control rate, patient tolerance and survival. The technical application is simple and easy to integrate in the daily routine of a radiotherapy department. The reduced time in the life island and the low incidence of acute reactions increases the patients quality of life. It turned out, that single dose TBI is not very suitable. This was already stated by Lester Peters in 1980.