Optimal exposure factors for lumbar spine AP in computed radiography examinations

Background: In diagnostic radiography, selection of kVp and mAs to produce acceptable image quality with a minimum dose has been challenge even for experience radiographers. The aim this study was determine optimal exposure factors lumbar spine AP examinations in computed radiograph using dose-image analysis. Materials Methods: A female anthropomorphic phantom used analysis the (mAs kVp) AP. Indirect method estimate entrance skin (ESD) phantom. values 70, 80, 90 and100 were selected while 16, 18, 20,22,25, 28,32, 36, 40, 45 50 also acquisition all images. Three (3) senior radiographers evaluated criteria set up by European Commission. Results: result indicated that score increased as ESD (mGy) increased. However, there no significant change between 1.941 4.882 mGy. 70 22 accepted standard body size radiography (CR). Conclusion: Optimization (kVp mAs) is necessary radiographic ensure safe use radiation medicine. It ensures effective patient management because high can be obtained information.