Field exposure

Irradiation field is the area of the skin, through which radiation therapy is radiation beam. For irradiation of tumors or other pathological focus are using one or more fields of radiation. Depending on location, size, and quantity of the radiation field is formed dose field, i.e. the distribution of radiation dose in the exposed area. Field exposure feature so that the maximum absorbed dose was in the pathological focus and healthy tissue subjected to minimum radiation exposure. In the course of radiation therapy in the area of field exposure occurs radiation reaction in the form of erythema or dry epidermica. To reduce the extent of this reaction is used lubricating field exposure indifferent ointments or fats. Developing sometimes, mainly in overdose, wet epidermis or radiation ulcer require special treatment.