Cardiac parametric mapping techniques are gaining traction for the clinical routine assessment of various pathologies. Despite the complex 3D patterns of many myocardial conditions, most current techniques are breath-held single-slice 2D acquisitions. We propose a free-breathing high-resolution isotropic 3D T2 mapping technique for the heart where breathing motion is corrected in k-space before image reconstruction. In 4 healthy volunteers and one patient with myocardial infarction, we found that our technique produced sharp and accurate T2 maps but had slightly lower precision than routine techniques.
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