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• W2000276582 abstract "You have accessJournal of UrologyStone Disease: Evaluation III1 Apr 2014MP73-05 INCREASED RADIATION EXPOSURE DURING URETEROSCOPY IN THE OBESE PATIENT. Fernando Cabrera, Richard Shin, Giao Nguyen, Chu Wang, Yi Hsuan Chung, Ramy Youssef, Charles Scales, Michael Ferrandino, Glenn Preminger, Terry Yoshizumi, and Michael Lipkin Fernando CabreraFernando Cabrera More articles by this author , Richard ShinRichard Shin More articles by this author , Giao NguyenGiao Nguyen More articles by this author , Chu WangChu Wang More articles by this author , Yi Hsuan ChungYi Hsuan Chung More articles by this author , Ramy YoussefRamy Youssef More articles by this author , Charles ScalesCharles Scales More articles by this author , Michael FerrandinoMichael Ferrandino More articles by this author , Glenn PremingerGlenn Preminger More articles by this author , Terry YoshizumiTerry Yoshizumi More articles by this author , and Michael LipkinMichael Lipkin More articles by this author View All Author Informationhttps://doi.org/10.1016/j.juro.2014.02.2358AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookTwitterLinked InEmail INTRODUCTION AND OBJECTIVES Patients with urolithiasis are at increased risk of significant radiation exposure. We determined the effect of obesity on radiation exposure during ureteroscopy (URS). Effective dose rates were calculated using an obese and non-obese validated phantom model during right and left URS. METHODS A validated anthropomorphic adult male phantom was positioned to simulate URS. Padding with radiographic characteristics of human fat was placed around the phantom to create an obese model. The phantom represents a male with a Body Mass Index (BMI) of approximately 24 kg/m2 and the obese model represents a male with a BMI of 30 kg/m2. Metal oxide semiconductor field effect transistor dosimeters were placed at 20 organ locations in the obese and non-obese model to measure organ dosages. A portable C-arm was used to provide continuous fluoroscopy to simulate a left and right URS for three 5-6 minute runs each. Organ dose rates were calculated by dividing organ dose by fluoroscopy time. Effective dose rate (EDR, mSv/sec) was calculated as the sum of organ dose rates multiplied by a tissue weighting factor (International Commission on Radiological Protection Publication). Values are reported as mean ± SD. RESULTS The mean effective dose rates were higher for the obese model compared with the non-obese model. The mean EDR during left URS was significantly increased in the obese model at 0.0092 ± .0004 mSv/sec compared to 0.0041 ± 0.0003 mSv/sec in the non-obese model (p = 0.006). The mean EDR during right sided URS was 0.0087 ± 0.0044 and 0.0036 ± 0.0003 mSv/sec in the obese and non-obese model, respectively (p = 0.180). The mean organ doses are listed in the table. CONCLUSIONS Fluoroscopy during URS contributes to overall radiation dose. Obese patients are at even higher risk due to increased exposure during fluoroscopy. Efforts should be made to minimize the amount of fluoroscopy used during URS, especially in obese patients. © 2014FiguresReferencesRelatedDetails Volume 191Issue 4SApril 2014Page: e866 Advertisement Copyright & Permissions© 2014MetricsAuthor Information Fernando Cabrera More articles by this author Richard Shin More articles by this author Giao Nguyen More articles by this author Chu Wang More articles by this author Yi Hsuan Chung More articles by this author Ramy Youssef More articles by this author Charles Scales More articles by this author Michael Ferrandino More articles by this author Glenn Preminger More articles by this author Terry Yoshizumi More articles by this author Michael Lipkin More articles by this author Expand All Advertisement Advertisement PDF downloadLoading ..." @default.
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• W2000276582 date "2014-04-01" @default.
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• W2000276582 title "MP73-05 INCREASED RADIATION EXPOSURE DURING URETEROSCOPY IN THE OBESE PATIENT." @default.
• W2000276582 doi "https://doi.org/10.1016/j.juro.2014.02.2358" @default.
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