[1] Rennes Univ Hosp, Dept Radiol, Rennes, France
[2] UCL, Univ Coll London Hosp, Inst Womens Hlth, Dept Neonatol, London, England
[3] Univ Rennes 1, Inserm VisAGeS Unit U746, Rennes, France
[4] UCL, Inst Neurol, London, England
[5] Ctr Eugene Marquis, Dept Nucl Med, Rennes, France