Motion Corrected Multi-scale Low Rank Reconstructions for Highly Accelerated 3D Dynamic Acquisitions
Zachary Miller, Luis Torres, Sean B. Fain, Kevin Johnson · Proceedings on CD-ROM - International Society for Magnetic Resonance in Medicine. Scientific Meeting and Exhibition/Proceedings of the International Society for Magnetic Resonance in Medicine, Scientific Meeting and Exhibition · 2024
This work develops a method for large-scale motion compensated 4D reconstructions of fully 3D radial acquisitions at near 1mm isotropic spatial resolution and sub-second temporal resolution. We combine and extend multi-scale image reconstruction (Extreme MRI) with k-space based motion field estimation (MOTUS) to solve for a multi-scale low rank representations of both images and motion fields. This combined approach outperforms the multi-scale low rank reconstruction without motion fields.