Cerebral aneurysms are dilatations, or bulges, in blood vessels of the brain. They can occur in an endless variety of shapes and sizes and some of them can be harmless, while others can rupture and cause bleeding into the subarachnoid space, or the space between the brain and the skull. Once this occurs, a number of complications can develop such as hydrocephalus, vasospasm, stroke, and nerve damage, and the chance of survival is 50% [1]. It is estimated that approximately 2% of the United States population has cerebral aneurysms, and roughly 27,000 patients per year are reported to have ruptured aneurysms [2].

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