Medium-term Follow-up of Patients With Obstetric Antiphospholipid Syndrome: MRI Study of White Matter

Inclusion Criteria: * The patient must have given their free and informed consent and signed the consent form * The patient must be a member or beneficiary of a health insurance plan * The patient is at least 18 years old * For the target population: only women included in the publication by Pereira et al (2016) will be included, with no obsteric history (fetal death \>10 weeks or 3 unexplained consecutive losses \<10 weeks) * For the test group: Patients must be positive for antiphospholipid antibodies based on results from Pereira et al (2016) * For the control group. Patients must be negative for antiphospholipid antibodies according to results from Pereira et al (2016) Exclusion Criteria: * The subject is participating in a category 1 interventional study, or is in a period of exclusion determined by a previous study * The subject refuses to sign the consent * It is impossible to give the subject informed information * The patient is under safeguard of justice or state guardianship * The patient is pregnant, parturient or breast feeding * The patient is claustrophobic * The patient has a metallic foreign body (e.g. pacemaker) * The patient has experienced pregnancy loss linked to infectious, metabolic, anatomic or hormonal factors