• Curr Opin Anaesthesiol · Oct 2006

    Review

    Imaging of cerebral blood flow and metabolism.

    • Jonathan P Coles.
    • University Department of Anaesthesia, Addenbrooke's Hospital, Cambridge, UK. jpc44@wbic.cam.ac.uk
    • Curr Opin Anaesthesiol. 2006 Oct 1; 19 (5): 473-80.

    Purpose Of ReviewTo review the techniques for imaging cerebral blood flow and metabolism following injury to the brain.Recent FindingsXenon enhanced computerized tomography (Xenon CT), CT perfusion and single photon emission CT provide measurements of cerebral perfusion, while positron emission tomography (PET), and magnetic resonance imaging and spectroscopy (MRI and MRS) are able to assess both perfusion and cerebral metabolism. Xenon CT and CT perfusion are readily available and have proved useful in a variety of causes of brain injury. PET is an extremely useful research tool for defining cerebral physiology, but is limited in its availability. Despite the continuing development of MRI and MRS imaging, the scanning environment remains hostile for critically ill patients, and further research is required before the techniques become generally available.SummaryImaging of cerebral blood flow and metabolism has been shown to be useful following a variety of causes of brain injury, as it can help to define the cause and extent of injury, identify appropriate treatments and predict outcome. Imaging based on CT techniques (Xenon CT and CT perfusion) can be implemented easily in most hospital centres, and are able to provide quantitative perfusion data in addition to structural images.

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