We quantitatively analyzed the background parenchymal enhancement of whole breast on MRI using in-house software with MATLAB.
The mean values of BPE were well correlated with qualitative grades of BPE.
The mean and ninety percentile values of BPE were lowest in 2nd week of menstrual cycle and highest in 4th week with statistical significance (p=0.005 for mean values and p=0.003 for nienty percentile, respectively).
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