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- W4386055830 abstract "Abstract Sufficient dose reduction may not be achieved if radioprotective curtains are folded. This study aimed to evaluate the scattered dose rate distribution and physician eye lens dose at different curtain lengths. Using an over-couch X-ray tube fluoroscopic system, d H *(10)/d t was measured using a survey meter 150 cm from the floor at 29 positions in the examination room when the curtain lengths were 0% (no curtain), 50%, 75%, and 100%. The absorbed dose rates in the air at the positions of endoscopist and assistant positions were calculated using a Monte Carlo simulation by varying the curtain length from 0–100%. The air kerma was measured by 10 min fluoroscopy using optically stimulated luminescence dosimeters at the eye surfaces of the endoscopist phantom and the outside and inside of the radioprotective goggles. At curtain lengths of 50%, 75%, and 100%, the ratios of d H *(10)/d t relative to 0% ranged from 80.8–104.1%, 10.5–61.0%, and 11.8–24.8%, respectively. In the simulation, the absorbed dose rates at the endoscopist’s and assistant’s positions changed rapidly between 55% and 75% and 65% and 80% of the curtain length, respectively. At the 0%, 50%, 75%, and 100% curtain lengths, the air kerma at the left eye surface of the endoscopist phantom was 237 ± 29, 271 ± 30, 37.7 ± 7.5, and 33.5 ± 6.1 µGy, respectively. Therefore, a curtain length of 75% or greater is required to achieve a sufficient eye lens dose reduction effect at the position of the endoscopist." @default.
- W4386055830 created "2023-08-23" @default.
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- W4386055830 date "2023-08-22" @default.
- W4386055830 modified "2023-09-27" @default.
- W4386055830 title "Effect of radioprotective curtain length on the scattered dose rate distribution and endoscopist eye lens dose with an over-couch X-ray fluoroscopic system" @default.
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- W4386055830 doi "https://doi.org/10.21203/rs.3.rs-3255884/v1" @default.
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