Highly-Accelerated Real-Time Cine MRI using compressed sensing and parallel imaging

Introduction Breath-hold cine MRI with balanced steady-steady free precession (b-SSFP) may yield non diagnostic image quality in patients with impaired breath-hold capacity and/or arrhythmias. In such patients, it may be necessary to perform real-time cine MRI. Currently, dynamic parallel imaging methods, such as TSENSE [1] and TGRAPPA [2], can be used to achieve only moderate acceleration rates (R) of 2-3 using standard body and spine coil arrays. We propose the application of a recently developed joint acceleration technique (CS-PI) [3] that combines compressed sensing [4] and parallel imaging for highly-accelerated, real-time cine MRI with clinically acceptable spatiotemporal resolution.