Intravacular Surgery in Intracranial and Cervical Regions （Endovascular Surgery : Current Status in the Various Clinical Fields)

With advances in radiological technology and inprovements in catheterization systems, intravascular procedures are now applied to various types of vascular lesions. In neurosurgery, the range of indication for intravascular surgery is also expanding. The intravascular surgical procedures are performed in vascular tumors, dural arterio-venous malformation (AVM), traumatic carotid cavernous fistula (CCF), cerebral aneurysm, cerebral AVM, stenosis of supra-aortic arteries and so on. In the cases with highly vascular tumors, the catheter embolization faciliteted surgery by decreasing intraoperative hemorrhage and reducing tumor volume. The traumatic CCF was treated succesfully by detachable balloon catheter, compared former therapies. In the almost cases with dural AVMs and cerebral AVMs, the velocity and the volume of arteriovenous shunt were reduced markedly, after the embolization. Percutaneous transluminal angioplasty in cases with stenosis of supraaortic artery achived satisfactory dilation of the constricted arteries in all cases without serious complication