Experimental studies of the scatter behavior of fast electrons in the use of electron applicators in radiotherapy

When using high energy electrons in radiotherapy, there is frequently undesirable electron scatter, which is derived from the applicators used to delimit the field. In order to improve our understanding of the factors which influence scatter, this was studied using fast electrons and a variety of materials to reduce this scatter. The geometry and angulation of the scattering plate and the electron energies were varied during these experiments.