Inclusion Criteria:  Criteria common to all participants:  Minor or major subject Affiliated, himself or through his parents if he is a minor, to a a social security scheme Having given their free, informed and written consent, and/or which the free, informed and written consent of the holder(s) parental authority has been obtained for minors  Specific criteria for healthy volunteers:  o No medical or surgical history related to the anatomical area(s) scanned  Specific criteria for voluntary patients:  o Indication for an MRI exam as part of its management  Exclusion Criteria:  - Contraindication to an MRI (pacemaker or pacemaker, neurostimulator, intra-orbital metal body, vascular clip ferromagnetic) Pregnancy Legal protection measure for adults in progress (safeguard of justice, guardianship, curatorship) or subject deprived of liberty