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Abstract #1751

TDI-Conditioned Diffusion Model for Resolution Enhancement of Diffusion-Weighted Images

Yujun Teng1, Haotian Jiang1, Feihong Liu2, Islem Rekik3, Jiquan Ma*1, and Geng Chen*4
1School of Computer Science and Technolog, Heilongjiang University, Harbin, China, 2School of Information and Technology, Northwest University, Xi'an, China, 3Imperial-X and Department of Computing, Imperial College London, London, United Kingdom, 4School of Computer Science and Engineering, Northwestern Polytechnical University, Xi'an, China

Synopsis

Keywords: AI Diffusion Models, Diffusion/other diffusion imaging techniques

Motivation: Diffusion-Weighted Imaging (DWI) suffers from low resolution. Post-acquisition super-resolution can effectively enhance the resolution of DWIs.

Goal(s): We propose a novel post-acquisition DWI super-resolution method based on the conditioned diffusion model.

Approach: We design an effective condition based on Track Density Imaging (TDI), which contains rich high-resolution information. Furthermore, we consider low-resolution DWIs as another condition to preserve the original information of images.

Results: Extensive experiments on HCP data show that our model is effective in DWI super-resolution and outperforms the cutting-edge models.

Impact: To enhance the resolution of DWIs, we propose a super-resolution method based on conditioned diffusion model. This is beneficial to the clinical practice of DWI.

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