Fig. 4From: Quantitative background parenchymal uptake on molecular breast imaging and breast cancer risk: a case-control studyQuantitative background parencymal uptake (BPU) measurements by subjective BPU category. BPU as assessed by a) operator 1 versus radiologist reader 1, b) operator 2 versus radiologist reader 1, c) operator 1 versus radiologist reader 2, and d) operator 2 versus radiologist reader 2 with corresponding Spearman correlations (all p values< 0.0001)Back to article page