The ain of this paper has been to indicate the relevance of the criteria A.S.A.R.A. (As Short As Reasonable Achievable) in the optimization of a fractionated radiotherapy schedule and the presentation of a Windows computer program as an easy tool in order to:
-Evaluate the Biological Equivalent Dose (BED) in a fractionated schedule.
-Make comparison between different treatments.
-Compensate a treatment when a delay has been happened.
-With a version of the Linear Quadratic model that has into account the factors of accelerated repopulation.
Public concern over the possible health effects fromelcctromagnetic fields (EMF) has led to the preparation of this handbook. Potential risk of EMF exposure from facilities such as power lines or mobile phone base stations present a difficult set of challenges for decision- makers. The challenges include determining if there is a hazard from EMF exposure and what the potential health impact, i.e. risk assessment; recognizing the reasons why the public may be concerned, i.e. risk perception; and implementing policies that protect public health and respond to public concerns, i.e. management.
Regional Office for the Americas of the World Health Organization