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J. M. Saavedra

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#diffusion models Open access Aug 2026

LDCT-to-SDCT as a Bridge Problem: Single-Step Residual Endpoint Flow Matching for Real-Time Denoising

The results show that exploiting paired anatomical correspondence enables diffusion-level LDCT reconstruction with a single step reconstruction, and across all REFM variants, one-step inference consistently provides the highest reconstruction quality.

T. D. Sotta, J. M. Saavedra, Violeta Chang et al. · 0 citations
Preprint Aug 2026

B-MIM: Biased Masked Image Modeling for Generalizable Segmentation of Fine-Grained Anatomical Structures

B-MIM is introduced, a modification of the iBOT objective that stochastically reduces global semantic alignment to prioritize local patch reconstruction and suggests that reducing global semantic pressure during pretraining enhances generalization to intricate anatomical structures.

S. González, Karen Sanchez, J. M. Saavedra et al. · 0 citations

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