SITReg: Multi-resolution architecture for symmetric, inverse consistent, and topology preserving image registration

• URL: http://arxiv.org/abs/2303.10211v4
• Date: Tue, 30 Jan 2024 08:29:03 GMT
• Title: SITReg: Multi-resolution architecture for symmetric, inverse consistent, and topology preserving image registration
• Authors: Joel Honkamaa and Pekka Marttinen
• Abstract summary: We propose a novel deep learning registration architecture based on extracting multi-resolution feature representations. Our method achieves state-of-the-art registration accuracy on two datasets.
• Score: 7.5986411724707095
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Deep learning has emerged as a strong alternative for classical iterative methods for deformable medical image registration, where the goal is to find a mapping between the coordinate systems of two images. Popular classical image registration methods enforce the useful inductive biases of symmetricity, inverse consistency, and topology preservation by construct. However, while many deep learning registration methods encourage these properties via loss functions, no earlier methods enforce all of them by construct. Here, we propose a novel registration architecture based on extracting multi-resolution feature representations which is by construct symmetric, inverse consistent, and topology preserving. We also develop an implicit layer for memory efficient inversion of the deformation fields. Our method achieves state-of-the-art registration accuracy on two datasets.

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