Pore diameter mapping using double pulsed-field gradient MRI and its validation using a novel glass capillary array phantom

► D-PFG MRI can determine a variety of microstructural features within each voxel. ► A novel glass capillary array (GCA) phantom was developed. ► Using d-PFG MRI and a novel theoretical framework GCA pore diameter was measured. ► A pore diameter map of the GCA phantom was obtained.