Abstract
Chest radiography can be used as the first modality to evaluate Covid-19 patients. The dose received by pediatric patients on chest radiographic examination is of particular concern in managing the principle of optimizing protection. One way to assess the quality of an image is to use the signal differential-to-noise ratio (SdNR). The results of this study showed no correlation was found between changes in exposure factors and SdNR values. However, it offers a correlation between the Figure of Merit (FOM) and surface dose (ESD). The largest FOM value was found at an exposure factor of 55 kV with 8 mAs. The exposure factor does not exceed the established diagnostic guide level. Furthermore, it will be used as a guide for radiographers in carrying out chest examinations in pediatric patients. Keywords: Dose optimization, pediatric patients, Diagnostic Guidance Level, In-house Phantom.
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