MammoFlow: Multiview Mammogram Synthesis with Anatomically Consistent Flow Matching

• URL: http://arxiv.org/abs/2606.28537v1
• Date: Fri, 26 Jun 2026 18:43:16 GMT
• Title: MammoFlow: Multiview Mammogram Synthesis with Anatomically Consistent Flow Matching
• Abstract summary: Multiview mammography relies on paired craniocaudal (CC) and mediolateral oblique (MLO) views to provide complementary projections of a 3D breast volume.<n>We propose a novel method to synthesize multiview mammograms by leveraging the inherent geometric relationship between CC and MLO views.<n>Our method demonstrates superior image quality, passes expert radiologist evaluation, and generates physically consistent pairs that improve downstream classification AUC by 5%.
• Score: 3.403175711287673
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Multiview mammography relies on paired craniocaudal (CC) and mediolateral oblique (MLO) views to provide complementary projections of a 3D breast volume, enabling precise anomaly localization. However, acquiring high-quality, balanced datasets remains challenging for deep learning applications. We propose a novel method to synthesize multiview mammograms by leveraging the inherent geometric relationship between CC and MLO views. To enforce an implicit 3D consistency prior during generation, we develop an alignment module that searches a 2D affine transformation subspace to establish optimal anatomical correspondence. Leveraging this alignment, we introduce a pixel-space self-consistency loss based on the Earth Mover's Distance (EMD) between the 1D anteroposterior (AP) axis tissue distributions of the generated images. Integrated into a pretrained flow matching model, MammoFlow forces synthesized pairs to share physically plausible tissue distributions from the chest wall to the nipple. To our knowledge, this is the first work to guide multiview mammogram generation using implicit geometric tissue correspondence. Our method demonstrates superior image quality, passes expert radiologist evaluation, and generates physically consistent pairs that improve downstream classification AUC by 5%. Code is available at https://github.com/XYPB/MammoFlow

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