Role of Cerebral Blood Flow Imaging in the Evaluation of Subarachnoid Hemorrhage and Intracranial Arteriovenous Malformations
In 1984, Ackerman stated that “despite a considerable output of time, effort, and money, techniques for measuring CBF produced relatively little information that proved to be of clinical value in ischemic stroke disease”. While this pessimism concerning the value of cerebral blood flow (CBF) measurement may be challenged in individual circumstances and certainly in management failures, subsequent studies with positron emission tomography (PET) scanning as well as large cooperative studies on the issue of cerebral revascularization have confirmed this somewhat nihilistic viewpoint for the larger group of patients presenting with complaints related to occlusive disease. Nevertheless, certain subgroups of patients definitely do become candidates for clinical CBF studies which can contribute to the decision-making process. In addition, the judicious acquisition of these data can lead to significant insight into pathopyhsiology both in the clinic and in the laboratory.
KeywordsSingle Photon Emission Compute Tomography Cerebral Blood Flow Subarachnoid Hemorrhage Arteriovenous Malformation Regional Cerebral Blood Flow
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