Acquisition-Weighted Stack of Spirals for High-Resolution Sodium MRI
Qian Y, Boada F
University of Pittsburgh
A novel data acquisition strategy for high resolution sodium MRI, acquisition-weighted stack of spirals (AWSOS), is here demonstrated to be feasible. In the AWSOS method, fast evolving spiral trajectory significantly reduces the fast sodium T2 decay, while the variable data acquisition delay compensates for the T2 decay during slice encoding. Our results from the numerical simulations and phantom studies showed that the AWSOS method is capable of achieving high in-plane resolution (up to 1mm) while keeping the data acquisition time relatively short.