Fig. 2From: Patient radiation dose during angiography and embolization for abdominal hemorrhage: the influence of CT angiography, fluoroscopy system, patient and procedural variablesa Boxplot comparing reference air kerma (Ka,r) between fluoroscopy systems, stratified by location. b Boxplot comparing air kerma-area product (PKA) between fluoroscopy systems, stratified by location. Values displayed as median and interquartile range. Outlying values denoted by circles. E=Extraluminal, L=lower GI and U=Upper GI; OS- Old system, NS- New SystemBack to article page