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Abstract #4547

MR Breast Density Measurement: Comparison of Two Anatomic Landmarks for Breast Segmentation

Jeon-Hor Chen1,2, Shih-Ting Chen2, Cheng-Ju Lin2, Daniel Chang1, Po-Pang Tsai2, Ke Nie1, Orhan Nalcioglu1, M-Y Lydia Su1

1Center for Functional Onco-Imaging, UC Irvine, Irvine, CA, United States; 2China Medical University Hospital, Taichung, Taiwan

Although breast density measurement showed high correlation using both anatomic landmarks, there was still an average of 20% difference for FV measurement. A significant number of women had the problem of being cut off of their fibroglandular tissue when the pectoris major muscle was used as the landmark. From our study, it was concluded that in women with dense breast such as the subjects included in this study, both anatomic landmarks, especially the one anterior to the pectoris major muscle, will have the problem of cut-off of the fibroglandular tissue, resulting in the acquired fibroglandular tissue underestimated.