1 Department of Radiology, National Institute of Neurology Mongi Ben Hamida, Tunis, Tunisia; Université de Tunis El Manar, Faculté de Médecine de Tunis, Tunis, Tunisia. Electronic address: skander119767@gmail.com.
2 Department of Radiology, National Institute of Neurology Mongi Ben Hamida, Tunis, Tunisia; Université de Tunis El Manar, Faculté de Médecine de Tunis, Tunis, Tunisia.