1 Cerebrovascular Interventional Neuroradiology Unit, Imagiology Department, Centro Hospitalar Vila Nova de Gaia/Espinho, Rua Conceição Fernandes S/N., Vila Nova de Gaia, Portugal. andre.araujo@chvng.min-saude.pt.
2 Cerebrovascular Interventional Neuroradiology Unit, Imagiology Department, Centro Hospitalar Vila Nova de Gaia/Espinho, Rua Conceição Fernandes S/N., Vila Nova de Gaia, Portugal.