Positron Emission Tomography

Positron emission tomography (PET) uses ISOlabeled carbon dioxide, carbon monoxide and oxygen to obtain quantitative maps of CBF, cerebral blood volume, oxygen extraction fraction and cerebral metabolic rate. PET has been used extensively in experimental studies of stroke, to define the ischemic penumbra and the effects of early reperfusion/hyperperfusion. Clinical uses are less common. Recently, a study of patients with carotid occlusion demonstrated that patients with high oxygen extraction fractions as determined by PET were at significantly higher risk of future ipsilateral stroke [20]. This may potentially identify a subset of patients who would benefit from extracranial-intracranial bypass surgery, and could imply an increased clinical role for PET scanning in the future.

Was this article helpful?

0 0
Turbo Metabolism

Turbo Metabolism

Forget Silly Diets-They Don't Work. Weight loss has got to be the most frustrating experience for many people, young and old alike. Eating foods that are just horrible, denying yourself foods you truly love and enjoy. Exercising, even though you absolutely hate exercising, and end up stiff as a board with no results.

Get My Free Ebook

Post a comment