ABSTRACT
Radiation therapy is one of the main methods for curing cancer. The number of people attacked by cancer is enormously high. According to the World Health Organization estimates, currently there are approximately nine million new cancer cases per year, worldwide. This number is expected to increase to about 15 mil lion new cases by the year 2015, with about two-thirds of these cases in developing countries. Therefore medical applications of accelerators as sources of fast particles, developing irradiation tech niques and wide investigations of biological aspects of irradiation are some of the most noble tasks of modern nuclear physics.
