作者单位:Department of Radiology, Azienda Ospedaliero Universitaria di Cagliari - Polo di Monserrato[1]Department of Obstetrics and Gynecology, Clínica Universidad de Navarra, University of Navarra[2]Department of Obstetrics and Gynecology Ospedale San Gionvanni di Dio, University of Cagliari[3]