More than 70%- 90% blockage of Brain Arteries cause Paralysis due to ‘TRANSIENT’ lack of blood supply to Brain .
In this situation by Interventional Neuroradiology techniques BLOCKAGE can be opened and Normal blood flow to brain will be restored .
Example- BLOCKAGE A gentleman presented with transient Rt. side facial Paralysis due to more than 95 % blockage of Brain Artery. After removal of blockage by STENTING , he never had these episodes.