Unified Multi-plane Autoregressive Diffusion for 3D Multi-contrast MRI Synthesis
We propose a unified Multi-Plane Autoregressive Diffusion (MPAD), a latent diffusion framework that achieves full-volume 3D synthesis using efficient plane-wise 2D operations while preserving volumetric coherence.
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Key points
- Acquiring a complete set of magnetic resonance imaging (MRI) contrasts is time-intensive and uncomfortable for patients, despite the diagnostic value of multi-contrast imaging.
- A 3D autoencoder first compresses MRI scans into an isotropic 3D la- tent representation.
- A 2D diffusion model is then trained to reconstruct masked latent slices of the target contrast, conditioned on both source- contrast slices and unmasked target-contrast slices.
- During inference, we introduce plane-wise autoregressive synthesis with inter-plane priors.
Sources (1)
- [1]Unified Multi-plane Autoregressive Diffusion for 3D Multi-contrast MRI SynthesisarXiv (AI, ML, NLP, CV, robotics, multi-agent) · Oct 7, 03:31 AM
We propose a unified Multi-Plane Autoregressive Diffusion (MPAD), a latent diffusion framework that achieves full-volume 3D synthesis using efficient plane-wise 2D operations while preserving volumetric coherence.
Acquiring a complete set of magnetic resonance imaging (MRI) contrasts is time-intensive and uncomfortable for patients, despite the diagnostic value of multi-contrast imaging.
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