Motion Correction for 3D T1 Mapping Using GRICS: Phantom Validation

Anne Menini¹, ², Hlne Clique¹, ², Marine Beaumont³, ⁴, Jacques Felblinger¹, ², Freddy Odille, ¹²

T₁ mapping is useful to analyze myocardial fibrosis or liver perfusion. Motion artifacts and misregistration that can occur during the examination affect the quantification. GRICS is an adaptive reconstruction method that takes into account signals from physiological sensors to correct for motion artifacts. The variant of GRICS presented in this work has been adapted to T₁ and 3D. On a gadolinium phantom, T₁ maps were obtained using the variable flip angle method, with and without motion. Corrected T₁ map was also reconstructed with our method. It significantly improves the quantification compared with T₁ obtained without correction.