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- W1976677253 abstract "Purpose: This study evaluated the effectiveness of a thin lead sheet based simple shielding method for imaging doses from cone beam computed tomography (CBCT) in image-guided radiotherapy (IGRT). Methods: The entire body, except for the region scanned by CBCT, was shielded by wrapping in a 2 mm lead sheet. Reduction of secondary doses from CBCT was measured using a radio-photoluminescence glass dosimeter (RPLGD) placed inside an anthropomorphic phantom and changes in secondary cancer risk due to the shielding effect were estimated using BEIR VII model. Results: Doses to out-of-field organs for head-and-neck, chest, and pelvis scans were decreased 15∼100 %, 23∼90 %, and 23∼98 %, respectively, and the average reductions in lifetime secondary cancer risk due to the 2 mm lead shielding were 1.61, 10.4, and 12.8 persons per 100,000, respectively. Conclusion: This study suggests that a simple thin lead sheet based shielding method results in a non-negligible reduction of secondary doses to out-of-field regions for CBCT." @default.
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- W1976677253 date "2014-05-29" @default.
- W1976677253 modified "2023-09-27" @default.
- W1976677253 title "SU-E-T-306: Study of the Reduction Technique for the Secondary Cancer Risk Due to Cone Beam CT in Image Guided Radiotherapy" @default.
- W1976677253 doi "https://doi.org/10.1118/1.4888638" @default.
- W1976677253 hasPublicationYear "2014" @default.
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