Magnetic Resonance Imaging (MRI) Follow-up of Macrophagic Infiltration in MS Patients Treated With Tysabri

MRI Follow-up of Macrophagic Infiltration in MS Patients Treated With Tysabri

To evaluate the diagnosis value of MRI and positon emission tomography (PET) scan for studying macrophagic infiltration and other brain modification in multiple sclerosis (MS) patients treated with Natalizumab (Tysabri).

Inclusion Criteria:

• Patients diagnosed with MS
• Treatment with Tysabri planned

Exclusion Criteria:

• Allergy to Tysabri or MRI contrast products
• Pregnancy