Objectives:The purpose of this narrative review is to describe effective efforts in radiation protection to limit scattered radiation exposure in terms of room analysis and to find out the difference in the effect of retaining wall thickness in limiting the scatter radiation dose.Reviews: Scattered radiation is part of radiation that deviates from the radiation source. Scattered radiation is primary radiation that passes through an object, then is refracted so that it becomes scattering. Excessive exposure to scattered radiation may produce a detrimental effect on the human body. Efforts can be made to limit exposure to scattered radiation.PubMed, Science Direct, and Google Scholar are databases used to search literature. The keywords used for literature searching are X-rays, radiation protection, scattered radiation, radiology installation, radiation leakage, wall thickness, radiation shield and space analysis combined using the Boolean operator (AND). The total references used are 35. Conclusion:Setting the distance and voltage of the radiation source is more effective in limiting radiation dose exposure and the thickness of the radiation barrier wall can limit the dose rate of the scattered radiation, the thicker the wall, the smaller the rate of radiation exposure passing through the wall.