Study: NCT02358811

Intervention type: DEVICE
Intervention: Magnetic resonance imaging (MRI)
Description: The acquisition of the image will last 45 minutes with 6 sequences.~* Before any examination, the manipulator will check the absence of contraindication to MRI.~* During the fifth sequence, Gadolinium (Gadovist®) will be injected intravenously to the concentration 0.1 mmol / kg. For this, a venous catheter will be placed before the first sequence and then removed after the examination. This injection will be carried out according to the usual practice of MRI.~* Throughout the examination, a physician will always be present.

Intervention type: DEVICE
Intervention: Magnetic resonance imaging (MRI)
Description: The acquisition of the image will last 45 minutes with 6 sequences.~* Before any examination, the manipulator will check the absence of contraindication to MRI.~* During the fifth sequence, Gadolinium (Gadovist®) will be injected intravenously to the concentration 0.1 mmol / kg. For this, a venous catheter will be placed before the first sequence and then removed after the examination. This injection will be carried out according to the usual practice of MRI.~* Throughout the examination, a physician will always be present.

Intervention type: DEVICE
Intervention: Magnetic resonance imaging (MRI)
Description: The acquisition of the image will last 45 minutes with 6 sequences.~* Before any examination, the manipulator will check the absence of contraindication to MRI.~* During the fifth sequence, Gadolinium (Gadovist®) will be injected intravenously to the concentration 0.1 mmol / kg. For this, a venous catheter will be placed before the first sequence and then removed after the examination. This injection will be carried out according to the usual practice of MRI.~* Throughout the examination, a physician will always be present.

Intervention type: DEVICE
Intervention: Magnetic resonance imaging (MRI)
Description: The acquisition of the image will last 45 minutes with 6 sequences.~* Before any examination, the manipulator will check the absence of contraindication to MRI.~* During the fifth sequence, Gadolinium (Gadovist®) will be injected intravenously to the concentration 0.1 mmol / kg. For this, a venous catheter will be placed before the first sequence and then removed after the examination. This injection will be carried out according to the usual practice of MRI.~* Throughout the examination, a physician will always be present.

Intervention type: BEHAVIORAL
Intervention: Cognitive assessment
Description: This cognitive assessment will include the following executive tests :~* test of Stroop~* left Trail Making Test A and B~* verbal fluence test~* test of memory of figures direct and inverse in order~* completion of matrices~* Paced Auditory Serial Addition Test (PASAT)

Intervention type: BEHAVIORAL
Intervention: Cognitive assessment
Description: This cognitive assessment will include the following executive tests :~* test of Stroop~* left Trail Making Test A and B~* verbal fluence test~* test of memory of figures direct and inverse in order~* completion of matrices~* Paced Auditory Serial Addition Test (PASAT)

Intervention type: BEHAVIORAL
Intervention: Cognitive assessment
Description: This cognitive assessment will include the following executive tests :~* test of Stroop~* left Trail Making Test A and B~* verbal fluence test~* test of memory of figures direct and inverse in order~* completion of matrices~* Paced Auditory Serial Addition Test (PASAT)

Intervention type: BEHAVIORAL
Intervention: Cognitive assessment
Description: This cognitive assessment will include the following executive tests :~* test of Stroop~* left Trail Making Test A and B~* verbal fluence test~* test of memory of figures direct and inverse in order~* completion of matrices~* Paced Auditory Serial Addition Test (PASAT)