Single Photon Emission Study of Hemodynamic Reserve in Internal Carotid Occlusions
Unlike carotid endarterectomy which can theoretically prevent both hemodynamic and embolic strokes from atherosclerotic plaques, extracranial-intracranial (EC-IC) bypass is advisable only for lesions determining a chronic decrease of brain perfusion pressure potentially responsible for hemodynamic strokes. Nevertheless, these operations have usually been decided on clinical and angiographic data, and have seldom taken into account objective hemodynamic intracranial parameters. Using positron emission tomography (PET), some authors have shown that permanent disturbances of hemodynamic [6, 7] and metabolic  data was a relatively infrequent occurrence in patients with carotid obstructive lesions, but that, in some of them, carotid endarterectomy  or EC-IC bypass  could reverse these disturbances.
KeywordsPositron Emission Tomography Cerebral Blood Volume Carotid Endarterectomy Internal Carotid Artery Occlusion Internal Carotid Artery Dissection
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