This research is research quantitative with the approach obsevasional to know the influence of linearity and resiprositas mas to of the intensity of radiation on a plane x-rays owns the samsung in the radiology laboratory University of Aisyiyah Yogyakarta. Data analysis to the influence of linearity and resiprosity mAs to of the intensity of radiation uses the method densitometri with analysis on the outcome of a curve on the microsoft excel. The results of the study showed every the increase in mAs in a linear manner will increase output of the radiation intensity and density produced .While increase of the tube ( mA ) that it was offset to the decline in time exposure will produce the intensity and the constant density.Keywords : linearity of mas, reciiproscity of mas, intensitas radiradiation inensityasi

Radiology installation one part of service in the hospital must consider and pay attention to patient safety. Radiographers are executor of services in radiology. Research on the relationship between radiographic characteristics and the application of patient safety radiation aims to analyze the effect of characteristic factors, age, sex, years of service, and PPR training. Based on research conducted by the author, the mass of work has a great influence on experience in an action taken. The mass of work of more than 5 years has an effect on improving the quality of patient safety application because it learns from a mistake to avoid the same mistake. Of the 4 gender characteristics, it did not show any relationship with the application of patient safety radiation with = 0.05, a p value of 0.072 was obtained. Characteristics of age more than 30 years to apply patient safety radiation is better than the age of 20-30 years. Characteristics of a working period of more than 5 years will make the implementation of patient safety radiation better. While the last characteristic is that PPR training has a relationship with the practice of implementing patient safety radiation. This research is expected to be able to contribute to science, especially in the field of implementing patient safety at the Radiology Installation so that radiographers can provide the best service by prioritizing patient safety.