Abstract:
This Study was performed to evaluate radiation Entrance skin dose ESD for adults patients undergoing X-ray examination for upper limbs imaging, in two selected centers in and out Khartoum state which use Computed Radiography (CR) unit. The exposure parameters (kV, mAs and FSD) were chosen for each age category of adult from 20-70 years , then the ESD was calculated –by using the Microsoft caldose - for each category in the two hospitals and compared with the reference dose level.
In center A the ESD for the upper limbs at the ages ((20-40), (40-60)) years found to be(0.54,0.47)μGy and In center B the ESD for the upper limbs the ages ((30-45),(45-60),(60-70)) years was (0.15,0.31,0.55) μGy.
The final results showed that The ESD depends and changes with the
exposure parameters (KV ,mAs) and changes with age.
The ESD in the two centers is within the reference level and , also Variations were observed in ESD values among hospitals under study. From this study we recommended that for all x-ray equipment should be regular maintenance and quality control tests and to standardize the exposure parameters in adults imaging
