The purpose of this study is to evaluate the optimization of MRI acquisition sequences.

Inclusion Criteria for all subjects :

• to be over 18 year-old,
• to be able to understand the instructions given,
• to be enrolled in a social security plan,
• to have underwent a pre-inclusion medical examination,
• to give a written consent.

Inclusion Criteria especially for Patients :

• to perform a MRI examination of the head, neck, spine, thorax, abdomen, pelvis, retroperitoneum, lower limbs, upper limbs or whole body during clinical follow-up care.

Exclusion Criteria for all subjects :

• any contraindication to MR examination (active medical device, ferromagnetic foreign body, pregnancy, morbid obesity, claustrophobia, … ),
• subject under a measure of legal protection.

Exclusion Criteria especially for Healthy Subjects :

• to have a pathology in the anatomical area to be imaged
• to be employed by the CHRU of Nancy or having the slightest link of subordination with the CHRU of Nancy.

Exclusion Criteria especially for Patients :

• to have a limited MRI examination time due to a sensitive clinical situation (sedation, unstable hemodynamic state, postoperative).