[1] Complexo Hosp Univ Santiago De Compostela, Radiol Dept, Santiago De Compostela 15706, Spain
[2] Complexo Hosp Univ Santiago De Compostela, Neurol Dept, Santiago De Compostela 15706, Spain
[3] Complexo Hosp Univ Santiago De Compostela, Anaesthesia Dept, Santiago De Compostela 15706, Spain
[4] Hlth Res Inst Santiago De Compostela IDIS, Neuroimaging & Biotechnol Lab NOBEL, Clin Neurosci Res Lab LINC, Santiago De Compostela 15706, Spain