Implementation of exposure index for optimize image quality and patient dose estimation with computed radiography (a clinical study of adult posteroanterior chest and anteroposterior abdomen radiography)

Chest and abdomen Radiographic are most commonly performed and contribute to doses. For this reason, the examination needs to be controlled to obtain image quality with a safe radiation level. This study aims to obtain standardized radiographic exposure index (EI) in Computed Radiography (CR) which is capable of displaying the image quality optimally and to obtain lower radiation dose based on techniques and EI standardized radiographic exposure without reducing the quality of the image information.

This research is a quantitative study with descriptive analysis. Data collected by random sampling technique. The total sample was 61 image editors that have been done by selecting Look Preference Editor (LPE) predetermined. Visual Grading Analysis (VGA) used to analyze quality assessment of the image viewer.

The results showed for the chest's VGA image quality is best viewed directly on the monitor CR with EI value 1430/220.99, whereas to the abdomen by using CR directly, with the best image has EI 1725/496.7. Good criteria image, with low dose estimation and optimal image quality, both chest and abdominal remain below the required range of Bapeten, which chest with 0.003 mGy and abdomen 0.0069 mGy.