Age

18–any

Sex

ALL

Healthy volunteers

Not accepted

Major subject (≥18 years old)
Subject suffering from multiple sclerosis or an NMO spectrum disease
Subject having received an MRI including 3D FLAIR, 3D DIR and 3D PSIR sequences
Brain MRIs of eligible subjects acquired between April 1, 2019 and November 30, 2021.
No opposition to the reuse of its data for scientific research purposes.

Presence of opposition from the subject (and/or their legal representative if applicable) to the reuse of their data for scientific research purposes.
Artifacts not allowing satisfactory interpretation

Comparison of Diagnostic Performances of 3D FLAIR, DIR and PSIR Sequences in Optic Neuritis