The procedure will be performed at the end of a cardiac MRI, performed as part of patient standard follow-up. A 12-channel surface antenna will be installed for the acquisition of the cardiac and pulmonary MRI images. VIBE (Volumetric interpolated breath-hold examination) T1 sequences, of 17 second duration (TR: 2.73 ms TE: 0.05 ms, Tilt angle: 5.5) will be acquired following a deep inspiration then a deep expiration.