Propose for the Benchmark Dose (BD) for the Optimization of Protection in Medical Exposure in General Radiography

Nihon Hoshasen Gijutsu Gakkai zasshi
Hiroshi WatanabeRyuto Tajima

Abstract

The goal of this research was to create the most appropriate index dose for the optimization of protection in medical exposure in general radiography in Kanagawa prefecture. We distributed questionnaires to 272 medical institutions in Kanagawa prefecture. The investigation period was from October 2015 to February 2016. Entrance surface dose (ESD) was used as the index dose. Investigated regions in general radiography were the adult chest, adult abdomen, and infant chest (anterior-posterior projections for all regions). The effective response rate was 35%. ESD was significantly lower with a flat panel detector (FPD) than with computed radiography (CR) in all regions (adult chest and abdomen: p<0.001; infant chest: p<0.05) [e.g., mean (±standard deviation) ESD in the adult chest was 0.16±0.06 mGy with FPD and 0.24±0.10 mGy with CR]. In the infant chest with CR, ESD was significantly higher using a grid (0.15±0.07 mGy) compared to not using a grid (0.10±0.05 mGy; p<0.05). Based on these results, we propose the benchmark dose of each medical equipment, such as adult chest: FPD, 0.2 mGy; CR, 0.3 mGy.

References

Jun 21, 2008·Radiology·Fred A MettlerMahadevappa Mahesh
Mar 16, 2016·Journal of Radiological Protection : Official Journal of the Society for Radiological Protection·Y AsadaM Kobayashi

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Citations

Aug 8, 2019·Radiation Protection Dosimetry·Yasuki AsadaHideki Shibata
Sep 2, 2019·Radiological Physics and Technology·Yasuki Asada, Takuma Ichikawa

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