**Author details**

Anastasia Zikou<sup>1</sup> , George Alexiou2\* and Maria Argyropoulou<sup>1</sup>

\*Address all correspondence to: alexiougrg@yahoo.gr

1 Department of Radiology, School of Medicine, University of Ioannina, Ioannina, Greece

2 Department of Neurosurgery, School of Medicine, University of Ioannina, Ioannina, Gre‐ ece
