Meta-learning Slice-to-Volume Reconstruction in Fetal Brain MRI using Implicit Neural Representations Article Swipe

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Maik Dannecker , Thomas Sanchez , Meritxell Bach Cuadra , Özgün Turgut , Anthony N. Price , Lucilio Cordero‐Grande , Vanessa Kyriakopoulou , Joseph V. Hajnal , Daniel Rueckert ·

YOU? · · 2025 · Open Access · · DOI: https://doi.org/10.48550/arxiv.2505.09565

High-resolution slice-to-volume reconstruction (SVR) from multiple motion-corrupted low-resolution 2D slices constitutes a critical step in image-based diagnostics of moving subjects, such as fetal brain Magnetic Resonance Imaging (MRI). Existing solutions struggle with image artifacts and severe subject motion or require slice pre-alignment to achieve satisfying reconstruction performance. We propose a novel SVR method to enable fast and accurate MRI reconstruction even in cases of severe image and motion corruption. Our approach performs motion correction, outlier handling, and super-resolution reconstruction with all operations being entirely based on implicit neural representations. The model can be initialized with task-specific priors through fully self-supervised meta-learning on either simulated or real-world data. In extensive experiments including over 480 reconstructions of simulated and clinical MRI brain data from different centers, we prove the utility of our method in cases of severe subject motion and image artifacts. Our results demonstrate improvements in reconstruction quality, especially in the presence of severe motion, compared to state-of-the-art methods, and up to 50% reduction in reconstruction time.

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Type: preprint
Language: en
Landing Page: http://arxiv.org/abs/2505.09565
PDF: https://arxiv.org/pdf/2505.09565
OA Status: green
OpenAlex ID: https://openalex.org/W4414940023

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DOI: https://doi.org/10.48550/arxiv.2505.09565

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Title: Meta-learning Slice-to-Volume Reconstruction in Fetal Brain MRI using Implicit Neural Representations

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Type: preprint

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Language: en

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Publication year: 2025

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Publication date: 2025-05-14

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Authors: Maik Dannecker, Thomas Sanchez, Meritxell Bach Cuadra, Özgün Turgut, Anthony N. Price, Lucilio Cordero‐Grande, Vanessa Kyriakopoulou, Joseph V. Hajnal, Daniel Rueckert

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Landing page: https://arxiv.org/abs/2505.09565

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Cited by: 0

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