Source of Support: None, Conflict of Interest: None
Quality assurance is playing a vital role in day to day life, hence necessary. Quality assurance test in this study was conducted on 20 x-ray machines. KVp test shows acceptable variation in 31.4% Collimator and beam alignment tests show acceptable variation in 66.7% and 31.6% respectively. Timer test shows acceptable variation in 20.4%. Output of 93.5% kVp stations shows acceptable variation. Focal spot deterioration in 47.5% was acceptable. Coefficient of linearity in 86.1 % was good. Good film screen contact was found in 72.2%. Poor functioning of any parameter may lead to retake of x-ray, which in turn increases cost and radiation dose to patients and staff. Therefore, it is emphasized that every x-ray machine must undergo quality assurance test at regular intervals.