Free-running cardiac magnetic resonance fingerprinting: Joint T1/T2 map and Cine imaging.

摘要: Abstract Purpose To develop and evaluate a novel non-ECG triggered 2D magnetic resonance fingerprinting (MRF) sequence allowing for simultaneous myocardial T1 T2 mapping cardiac Cine imaging. Methods Cardiac MRF (cMRF) has been recently proposed to provide joint T1/T2 by triggering the acquisition mid-diastole relying on subject-dependent dictionary of MR signal evolutions generate maps. In this work, we propose “free-running” (non-ECG triggered) cMRF framework imaging in single scan. Free-running is based transient state bSSFP with tiny golden angle radial readouts, varying flip multiple adiabatic inversion pulses. The acquired data retrospectively gated into several phases, which are reconstructed an approach that combines parallel imaging, low rank modelling patch-based high-order tensor regularization. was evaluated standardized phantom ten healthy subjects. Comparison reference spin-echo, MOLLI, SASHA, T2-GRASE performed. Results values obtained were good agreement (ICC(A,1) > 0.99). Reported myocardium septum 1043 ± 48 ms, 1150 ± 100 ms 1160 ± 79 ms SASHA free-running respectively 51.7 ± 4.1 ms 44.6 ± 4.1 ms respectively. Good observed between conventional ejection fraction (bias = −0.83%). Conclusion allows assessment