Reeves RR, Ang L, Bahadorani J, et al. Invasive Cardiologists Are Exposed To Greater Left Sided Cranial Radiation. JACC Cardiovasc Interv. 2015 Aug 17;8(9):1197-1206.

This study sought to determine radiation exposure across the cranium of cardiologists and the protective ability of a nonlead, XPF (barium sulfate/bismuth oxide) layered cap (BLOXR, SaltLake City, Utah) during fluoroscopically guided, invasive cardiovascular (CV) procedures. There was significantly greater total radiation exposure at the outside left and outside center (106.133.6 mrad and 83.118.9 mrad) versus outside right (50.2  16.2 mrad; p < 0.001 for both) locations of the cranium. After subtracting ambient radiation, exposure at the outside left was 16 times higher than the inside left (p < 0.001) and 4.7 times higher than the outside right (p < 0.001). Exposure at the outside center location was 11 times higher than the inside center (p < 0.001), whereas no difference was observed on the right side.

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