[1] Univ Naples 2, Dept Med Surg Neurol Metab & Aging Sci, Naples, Italy
[2] Univ Naples 2, MRI Ctr SUN FISM, Naples, Italy
[3] Inst Diag & Care Hermitage Capodimonte, Naples, Italy
[4] Univ Naples 2, Dept Radiol, Neuroradiol Serv, Naples, Italy
[5] Univ Salerno, Dept Med & Surg, Baronissi, Italy