Abstract: A method for calibrating a piece of MRI tomography equipment involves constructing a pair of phantoms comprising a physical phantom and a digital twin phantom, determining the virtual image of the digital phantom on the basis of the characteristics of the piece of MRI equipment to be tested, carrying out an MRI sequence with the physical phantom, and verifying the virtual and real image, wherein the digital phantom is produced by solving Bloch equations applied to the characteristics of the physical phantom as a function of the characteristics of the reference sequence.