1 Radiology Department, Unidade Local de Saúde de Trás-Os-Montes e Alto Douro (ULSTMAD), Av. da Noruega, Lordelo, 5000-508, Vila Real, Portugal.
2 Second Department of Radiology, School of Medicine, University General Hospital "ATTIKON", Medical School, National and Kapodistrian University of Athens, 1 Rimini Str 12462 Haidari, Athens, Greece.
3 Second Department of Radiology, School of Medicine, University General Hospital "ATTIKON", Medical School, National and Kapodistrian University of Athens, 1 Rimini Str 12462 Haidari, Athens, Greece. [email protected].