[en] The volume includes the abstracts of contributions of the DEGRA meeting 2018 concerning the following topics: late side effects and life quality, central nervous system glioma/mengioma, radiobiology - combined therapy, lymphoma/Wilms tumor, modern therapy techniques - medical physics, brachytherapy, accrual studies, supportive therapy and palliative medicine, radiobiology - radiation sensitivity, protons and heavy ions, quality assurance, prostate carcinoma. Mamma carcinoma, lung carcinoma, central nervous system - metastases, skin tumors and soft tissue sarcoma, head-neck-tumors, molecular genetics and immune-modulation, re.-irradiation, medical physics, modern imaging techniques and therapy planning, extracranial SBRT.