Fast Medical Shape Reconstruction via Meta-learned Implicit Neural Representations

• URL: http://arxiv.org/abs/2409.07100v1
• Date: Wed, 11 Sep 2024 08:44:10 GMT
• Title: Fast Medical Shape Reconstruction via Meta-learned Implicit Neural Representations
• Authors: Gaia Romana De Paolis, Dimitrios Lenis, Johannes Novotny, Maria Wimmer, Astrid Berg, Theresa Neubauer, Philip Matthias Winter, David Major, Ariharasudhan Muthusami, Gerald Schröcker, Martin Mienkina, Katja Bühler,
• Abstract summary: Minimizing retrieval and processing times potentially enhances swift response and decision-making in critical scenarios. Recent methods attempt to solve the medical shape reconstruction problem by utilizing implicit neural functions.
• Score: 5.213304732451705
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Efficient and fast reconstruction of anatomical structures plays a crucial role in clinical practice. Minimizing retrieval and processing times not only potentially enhances swift response and decision-making in critical scenarios but also supports interactive surgical planning and navigation. Recent methods attempt to solve the medical shape reconstruction problem by utilizing implicit neural functions. However, their performance suffers in terms of generalization and computation time, a critical metric for real-time applications. To address these challenges, we propose to leverage meta-learning to improve the network parameters initialization, reducing inference time by an order of magnitude while maintaining high accuracy. We evaluate our approach on three public datasets covering different anatomical shapes and modalities, namely CT and MRI. Our experimental results show that our model can handle various input configurations, such as sparse slices with different orientations and spacings. Additionally, we demonstrate that our method exhibits strong transferable capabilities in generalizing to shape domains unobserved at training time.

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