Endovascular Interventional Radiology Management Of Cerebrovascular Aneurysms

Abstract

Cerebral aneurysm is one of the main causes of cerebral haemorrhage. Cerebral aneurysms are pathologic focal dilatations of the cerebrovasculature that are prone to rupture. In relation to the central nervous system we are concerned with: Saccular aneurysms, atherosclerotic fusiform aneurysms, Spontaneous and post-traumatic arteriovenous aneurysms, dissecting aneurysms, mycotic aneurysms, intra cerebral miliary aneurysms and neoplastic aneurysms. The cerebral aneurysms maybe classified according to the shape into saccular or non saccular or according to the size into very small aneurysms (micro aneurysms), small aneurysms, medium sized aneurysm, large sized aneurysms and giant aneurysms or according to the anatomical site into; internal carotid system aneurysms, anterior cerebral and anterior communicating, middle cerebral aneurysms, vertebro basilar aneurysms and aneurysms of vein of Galen. The pathological sequelae of aneurysms rupture maybe immediate in the form of: haemorrhage, brain herniation, acute hydrocephalus and acute brain swelling or maybe delayed in the form of: aneurysmal rebleeding, cerebral oedema, cerebral infarction and vasospasm and chronic hydrocephalus. The incidence for aneurysmal SAH varies widely depending on geographic location, ranging from 3.9 -• 19.4/100,000 individuals, overall the incidence has been estimated at 10.5 I 100,000 individuals.