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Table 2 Molecular breast imaging (MBI) quantitative background parencymal uptake (BPU) components by case status

From: Quantitative background parenchymal uptake on molecular breast imaging and breast cancer risk: a case-control study

Characteristic   Breast cancer cases Controls  
Operator n = 62 n = 176 P
Average counts in fibroglandular tissue, mean ± SD (range) 1 41.5 ± 20.7 (6.8–116.6) 37.6 ± 23.2 (7.3–218.4) 0.08
2 41.2 ± 21.1 (7.2–194.9) 36.5 ± 21.7 (6.5–114.6) 0.08
Average counts in fat, mean ± SD (range) 1 31.5 ± 14.3 (5.9–87.4) 32.7 ± 17.2 (6.2–95.7) 0.99
2 32.6 ± 16.0 (5.7–90.7) 32.5 ± 17.0 (7.2–98.9) 0.78
Quantitative BPU (fibroglandular/fat), mean ± SD (range) 1 1.4 ± 0.4 (0.8, 2.8) 1.2 ± 0.3 (0.4, 2.9) 0.002
2 1.4 ± 0.5 (0.8, 2.9) 1.2 ± 0.4 (0.5, 3.2) 0.007