Multi-echo Rational Golden Angle Propeller Sampling for T1-T2-T2*-FF Cardiac MR Multitasking

Motivation: To increase multi-echo sampling efficiency of T1-T2-T2*-FF (fat-fraction) Multitasking. Goal(s): Integrate propeller encoding into the MR Multitasking framework and evaluate its performance for cardiac MRI. Approach: Incoherent propeller sampling was achieved with a randomized pre-phase gradient and blip gradients between echoes before rotating by a propeller-specific rational golden angle approximation. This was tested on n = 4 healthy volunteers at 3T. Results: Propeller and radial sampling showed no significant bias between measurements, and propeller produced higher SNR in T2* measurements. Impact: Rational golden-angle propeller sampling efficiently covers multi-echo k-t space data and offers a foundation to further improve imaging efficiency