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Changes in cerebral physiology following cranioplasty: a 15oxygen positron emission tomography study
Critical Care volume 12, Article number: P108 (2008)
Patients with skull defects report symptoms, which improve with cranioplasty (CP). We used 15O positron emission tomography (PET) to examine whether this resulted from improvements in cerebral physiology.
Seven patients were imaged 6–12 months post craniectomy with PET to derive maps of cerebral blood flow (CBF), oxygen metabolism (CMRO2), and oxygen extraction fraction (OEF) before and after CP. PET maps were coregistered with magnetic resonance images and segmented into grey matter (GM) and white matter (WM). Physiology was quantified in mixed GM + WM, GM and WM regions of interest (ROIs) underlying the craniectomy and in whole-brain GM, WM and GM + WM ROIs.
Although individual subjects demonstrate improvements in physiology following CP, there were no systematic changes. Future studies will assess changes in individuals and relate these to metabolic changes within specific brain regions.
Cunningham AS, et al.: Brain. 2005, 128: 1931-1942. 10.1093/brain/awh536
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Abate, M., Chatfield, D., Outtrim, J. et al. Changes in cerebral physiology following cranioplasty: a 15oxygen positron emission tomography study. Crit Care 12, P108 (2008). https://doi.org/10.1186/cc6329
- Magnetic Resonance Image
- Positron Emission Tomography
- White Matter
- Brain Region
- Grey Matter