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Abstract
An optically stimulated luminescence dosemeter was used to compare the surface dose to both eyes from an X-ray delivered frontally to the skull, and the dose could be reduced depending on image acquisition. The detectors were analysed in advance according to each image acquisition method, and the irradiation condition (mA) was obtained to equate the detective quantum efficiency of the two detectors. The surface doses to both eyes were measured in a human phantom. In the detector using the direct conversion method, the surface doses to both eyes were 0.29 ± 0.01 mSv (Rt. eye) and 0.28 ± 0.01 mSv (Lt. eye). In the detector using the indirect conversion method, the surface doses to both eyes were 0.23 ± 0.01 mSv (Rt. eye) and 0.23 ± 0.01 mSv (Lt. eye). Dose reduction by 18.00 ± 8.9% was permitted by the indirect method as compared with the direct method.

Author information

Han SC1, Na YJ2, Choi JS2, Park S1, Kang S3, Chang SG4.
1
Division of Medical Radiation Equipment, Korea Institute of Radiological and Medical Sciences, Seoul01812, Korea.
2
Department of Research & Development, DRTECH Corporation, Seongnam 13558, Korea.
3
Department of Radiology, Sooncheonghyang University, Seoul 01812, Korea.
4
Department of Medical Science, Sooncheonghyang University, Cheonan City, Cheonan 31151, Korea.