Radiation dose received by patients during barium meal investigations under automatic brightness control

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Abstract
The radiation does to a group of patients undergoing double-contrast Ba meal investigations was monitored using LiF thermoluminescent dosemeters (TLD). All examinations were performed by the same radiologist in 2 rooms at the same hospital. Both rooms contained equipment with an undercouch tube/overcouch image intensifier configuration. The examinations were performed at a preselected tube potential using automatic brightness control which varied the screening current to keep the dose rate at the image intensifier input surface constant. There apparently is a significant difference in mean radiation dose between the 2 rooms. These measurements were used to estimate the radiation dose to other organs, such as the testes, ovaries, uterus and active bone marrow.

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