Investigation on Dose Levels of Medical Exposure From X-Ray Diagnostic Procedures in Qinghai Province / 环境与健康杂志

ABSTRACT

Objective To investigate the exposure dose levels of patient body surface and main sensitive organs from routine medical X-ray diagnosis so as to offer a basic data of guidance levels in radiological diagnosis practice. Methods To measure the skin surface exposure doses of the irradiation field and the main sensitive organs of patients by thermoluminescent dosimeter moreover to estimate the main sensitive organs exposure doses using tissue percentage depths formula. Results The exposure dose of chest fluoroscopy was 30 times that of fluorography. The exposure dose(12.41 mGy/time) of barium meal examination in alimentary canal was the highest in all examination. The dose of thyroid(0.210 mGy/time) was the highest when getting the chest fluoroscopy the dose of ovary was the highest when getting barium meal(0.390 mGy/time) and lumbar fluoroscopy(0.168 mGy/time) in all of sensitive organs dose. Conclusion Chest fluorography will give the patients a lower dose exposure of X-ray compared with fluoroscopy.