During the last years embolization with Guglielmi detachable coils has provided a new alternative of treatment of intracranial aneurysms. Neuroanesthesiologists and neurointensivists have an important role in the selection of the patients to traditional surgical treatment or endovascular treatment. This selection must be a team decision on the basis of the patient's conditions. The main contribution of neuroanesthesiologists is to evaluate the patient's medical and neurologic conditions and to prospect the anesthesiological problems in each technique, especially when the patient is treated in acute phase after SAH.