radiotherapy is one of the most common treatments of cancer that are used alone or with the combination of other treatments. radiotherapy are used before surgery for tumor shrinking, pain relief, wound healing or prevention of continues bleedings. in this paper, types of radiotherapy and safety principles for nurses are considered. there are three basic methods for radiotherapy: teletherapy, br...

extractthere are some hypothesis that the children do not feel pain. these assumptions are based on circumstantial and theoretical evidence. this theory believes that children, especially infants are not able to understand the pain because their nervous system is immature. however, these assumptions are acceptable for all of people except about children. there is evidence that children continuo...