ABSTRACT
Introduction 813
Radiotherapy equipment and physics 813
Biological effects of radiation: DNA damage and repair 815
Tumour cell kinetics and response to radiotherapy 816
Treatment morbidity 817
Radiotherapy fractionation 820
Factors influencing the effectiveness of radiotherapy 822
New developments 823
Reirradiation 825
Key evidence 825
Key learning points 825
References 825
Let the wise listen and add to their learning and let the discerning get guidance.
