3 papers
physics.med-ph2026
Beyond directions: Symmetry-aware rotation sets for triaxial diffusion encoding by geometric filter optimization
Sune Nørhøj Jespersen, Filip Szczepankiewicz
Purpose: To improve the accuracy of diffusion-weighted powder average signals for diffusion encoding with arbitrary b-tensors. Methods: We identify an intrinsic dihedral () sy…
physics.med-ph2026
Axonal microstructure and compartmentalization impact the orientation and time dependence of mesoscopic transverse relaxation
Anders Dyhr Sandgaard, Rafael Neto Henriques, Noam Shemesh +1
In biological tissue, MR transverse relaxation stems from mechanisms spanning multiple scales, from molecular dipole-dipole interactions to mesoscopic field variations driven by ti…
physics.med-ph2024
Predicting Mesoscopic Larmor Frequency Shifts in White Matter with Diffusion MRI -- A Monte-Carlo Study in axonal phantoms
Anders Dyhr Sandgaard, Sune Nørhøj Jespersen
This study aims to validate if MRI can measure anisotropic mesoscopic Larmor frequency shifts from white matter axonal microstructure relative to the B0 direction and if dMRI can e…