Quantitative assessment of background parenchymal enhancement in breast MRI predicts response to risk-reducing salpingo-oophorectomy: preliminary evaluation in a cohort of BRCA1/2 mutation carriers

We present a fully-automated method for deriving quantitative measures of background parenchymal enhancement (BPE) from breast dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) and perform a preliminary evaluation of these measures to assess the effect of risk-reducing salpingo-oophorectomy (RRSO) in a cohort of BReast CAncer susceptibility gene 1/2 (BRCA1/2) mutation carriers. Methods: Breast DCE-MRI data from 50 BRCA1/2 carriers were retrospectively analyzed under the Health Insurance Portability and Accountability Act (HIPAA) and institutional review board approval. Both the absolute (| |) and relative ( %) measures of BPE and fibroglandular tissue (FGT) were computed from the MRI scans acquired before and after RRSO. These pre- and post-RRSO measures were compared using paired Student’s t-test. The area under the curve (AUC) of the receiver operating characteristic (ROC) were used to evaluate the performance of relative changes in the BPE and FGT measures in predicting breast cancer developed among these women after the RRSO surgery. Results: For the 44 women who did not develop breast cancer after RRSO, absolute volume of BPE and FGT has a significant decrease (p 
Source: Breast Cancer Research - Category: Cancer & Oncology Authors: Source Type: research