The wide spread diagnostic radiology Practice with varied modalities such as computed Tomography, Radiology, Fluoroscopy & Mammography use X-rays to provide diagnostic Information .The benefit to patients by using these is indisputable. However, Exposure to radiation during X-ray’s should be at a controlled level and should be according to the prescribed standards so that proper radiation safety is consistent. This Norm was taken out by AERB advisory committee on radiological safety. One important way According AERB to Optimize the Radiation exposures and thus ensure Radiation safety of patient as well as the occupational worker is to ensure that the quality Assurance of diagnostic radiology equipment is carried out Periodically