[en] The ESR technique provides interesting possibilities for accident dosimetry. Especially in teeth and bone samples, this dosimetry seems to be applicable even in the lower dose range, i.e. those which are about 10 times higher than the dose limits according to the German Strahlenschutzverordnung. The feasibility of dose measurements of nail samples should be studied in more detail. If optimal measurement conditions for certain types of substances have been worked out, it will be easily possible to assess rapidly doses by the ESR technique using almost any type of ESR spectrometer available with the standard equipment of many institutes. The main advantage of the ESR spectroscopy applied to dosimetry, however, seems to be the possibility to investigate radiation induced radicals in a large number of different non-biological materials. In the case of the radiation accident in Norway, tablets could be used which the exposed operator carried with him. The tablets were mainly consisting of carbohydrates, which are known to form radiation induced radicals with a relatively high yield. A dosimeter system worked out in detail is polycrystalline alanine which is also based on the detection of radiation induced radicals. (orig./MG)