Keywords: Diffusion Reconstruction, Diffusion Reconstruction
Motivation: Mesoscale dMRI will enable investigation of brain’s fine-scale structures.
Goal(s): We aim to achieve fast mesoscale distortion-free in-vivo dMRI (<= 500-µm-iso) within clinically acceptable time.
Approach: To accelerate mesoscale dMRI acquisition based on Romer-EPTI, we develop a novel physics-driven, spatial and q-space (x-q) attention-network regularized reconstruction combined with a x-q undersampling strategy to leverage the data redundancy in the joint x-q domain. Two x-q attention denoiser networks, one in image domain and the other in feature domain, are developed as plug-and-play priors.
Results: We demonstrate four-fold accelerated Romer-EPTI capable of acquiring 500-µm isotropic dMRI under 20 minutes on clinical 3T scanners.
Impact: The proposed physics-driven, joint spatial and q-space attention-network regularized reconstruction enables accelerated Romer-EPTI, achieving mesoscale dMRI at 500-µm isotropic resolution within 20 minutes.
How to access this content:
For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.
After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.
After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.
Keywords