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Bar charts with error bars showing the mean beam-flow angles and mean PSVs without and with the use of slanted gel pads by each radiologist. Radiologists 12 and 13 designed this study and were aware of the purpose of the study, the other radiologists were not aware of the purpose of this study. a Side-by-side bar chart showing beam-flow angles of each radiologist without and with gel pads. b Side-by-side bar chart showing the mean PSV of each radiologist without and with gel pads
