Background & Aim: Endovascular neurosurgery is widely accepted as a useful current modality for the management of neurovascular disorders. The aim of this retrospective study was to evaluate the causes of diagnostic and therapeutic neurovascular procedures, and the prevalence of vas cular pathologies seen in these procedures.Methods & Materials/Patients: Endovascular neurosurgery department of Firoozagar hospital is a referral center of neurovascular disorders from all of country. The activity of this center was started in February 2013 and has continued until now, as the most active center for the management of neurovascular disorders. In this study, we analyzed the causes and results of 761 neuroendovascular procedures done on 598 patients, during the 18 month period of February 2013 to September 2014 in Firoozgar Hospital in Tehran, Iran. The mean age of the patients was (44.83 ± 18.73) years and 50.3% of them were females.Results: In total, 761 diagnostic and therapeutic neuroendovascular procedures were done on 598 patients in the first 18 months’ activity of this center. The mean age of the patients was (44.83 ± 18.73) years and 50.3% of them were females. The most prevalent cause of these procedures was spontaneous intracerebral HEMORRHAGES (27.6%). After that, ruling out vascular lesions (14.2%) due to suspicious MRI, and focal neurologic defects (11.2%) were the most common causes.This study also showed that 26 out of 598patients were treated for trigeminal neuralgia, 14 patients were treated for retinoblastoma, and 14 patients were treated for radiculopathies symptoms. The vascular angiographies done on the remaining 544 patients were due to diagnosis and treatment of vascular lesions of whom, 167 patients had normal angiographies and 377 patients had neurovascular pathologies. Intracranial aneurysms, AVMs and carotid stenosis formed respectively the most common types of vascular malformat ions in our study.Conclusion: Descriptive studies are basic for the complementary research and evaluation of results in referral centers and other new centers. In the first 18 months of activity of our center, favorable results were obtained, since about 70% of diagnostic angiographies showed vascular pathologi es.