Improved Compressed Sensing Reconstruction & Optimised Sampling Patterns for Very Fast Acquisition of Hyperpolarised 3He Images

Salma Ajraoui¹, Steven Parnell¹, Juan Parra-Robles¹, Robert Ireland¹, Jim Wild¹

Compressed Sening reconstruction of lung 3He images is improved through the introduction of prior knowldge. Here coregistered 1H MRI image and the knowledge of the hyperpolarised gas depolarisation through the k-space filter are used for a more accurate reconstruction at higher reduction factor.