This 1-year fellowship offers extensive vascular and interventional training, as well as participation in both clinical and basic research. The Interventional Radiology Section at Medical Imaging Center of Imam Khomeiny Hospital Complex performs more than 5,000 procedures annually, covering the entire spectrum of diagnostic and interventional radiology. These include: /Diagnostic arteriography and venography /Angioplasty / Vascular stenting /Thrombolysis /Nephrostomy and retrograde pyelography /CVS and Amniocentesis / Image guided biopsy from tumors and bone /Osteoid osteoma and other lyser ablation procedures /Pain block /Brain Aneurysm coiling,AVM embolization,Brain Fistula treatement /Drainage of cysts and collections /Dialysis access maintenance /Embolotherapy /Vena cava filter placement /Intravascular foreign-body retrieval /Central venous catheter insertion /Percutaneous biliary and genitourinary interventions /Percutaneous gastrostomy and jejunostomy /Percutaneous abscess drainage and biopsy /Transjugular intrahepatic portosystemic shunts /Catheter-directed thrombolysis for the management of iliofemoral venous thrombosis /Carotid, vertebral, and renal artery stenting /Uterine artery embolization for the treatment of fibroids /Percutaneous radiofrequency tumor ablation and chemoembolization /Treatment of varicose veins. In addition to the performance of a wide variety of vascular and interventional radiologic procedures, each fellow gains extensive clinical experience in the pre- and post-procedural management of patients who are candidates for intervention, both in the IR clinical area and in the dedicated IR Clinic facility. A didactic core curriculum in vascular and interventional radiology is provided. Fellows receive instruction in the performance and assessment of noninvasive laboratory techniques and play an active role in the performance and interpretation of duplex ultrasound, MRA and CTA. The special procedures area includes 2 state-of-the-art angiography suites, a holding area, a reception area and conferencing facilities. three dedicated color duplex ultrasound units are available for vascular imaging and procedural guidance. 2 fast reconstructing computed tomography scanners and 2 magnetic resonance imaging units are also available within the department.