Fig. 3. 15O-gas PET performed on POD 5 shows elevated CBF (A) and CBV (D) in the area supplied by the lt. superior trunk of the MCA. CMRO2 (B) was slightly decreased (arrowhead) while OEF (C) was decreased in the same area. CBF (E) and CMRO2 (F) were decreased in the contralateral cerebellar hemisphere (arrow). CBF: cerebral blood flow, CBV: cerebral blood volume, CMRO2: cerebral metabolic rate for oxygen, MCA: middle cerebral artery, OEF: oxygen extraction fraction, PET: positron emission tomography, POD: postoperative day.
