1 Department of Radiology, San Carlo Borromeo General Hospital, Postgraduation School in Radiodiagnostics, Università degli Studi di Milano, Milan, Italy.
2 Neuroradiology Unit, Department of Radiology, ASST Santi Paolo e Carlo, San Carlo Borromeo Hospital, Via Pio II n. 3, 20153, Milan, Italy.
3 Headache Center, Department of Neurology, San Carlo Borromeo General Hospital, Milan, Italy.
4 Department of Radiology, San Carlo Borromeo General Hospital, Milan, Italy.
5 Neuroradiology Unit, Department of Radiology, ASST Santi Paolo e Carlo, San Carlo Borromeo Hospital, Via Pio II n. 3, 20153, Milan, Italy. carla.uggetti@asst-santipaolocarlo.it.