Keywords: Myocardium, Low-Field MRINative T1 and T1ρ mapping has shown promising results for the detection of focal and diffuse myocardial fibrosis without requiring contrast agents. However, conventional myocardial maps are acquired sequentially in 2D at 1.5T/3T fields. 3D joint T1/T1ρ mapping has recently been proposed at 1.5T, but not demonstrated at lower field, which could potentially make cardiac MRI more accessible and affordable. Furthermore, lower T1 relaxation times, reduced SAR and fewer B0/B1 inhomogeneities make low-field MRI an attractive alternative for joint T1/T1ρ mapping. Here, we investigate the feasibility of novel 3D whole-heart joint T1/T1ρ mapping on the latest 0.55T MR scanner generation.
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