Intraoperative computerized tomographic (CT) scan findings in two case
s during resection of glial tumour are described. These intraoperative
CT images were obtained by an exclusively developed operating CT scan
ner system for use in the operating room. Repeated intraoperative CT s
cans taken during tumour removal showed shift of the brain including c
entral structures and displacement of the cortical subarachnoid space
in both cases. With contrast medium, the edge of the surrounding brain
after resection was enhanced and a round enhanced area was observed i
n distant white matter. The distant enhancement, which we call 'remote
enhancement: probably suggests damage to the blood-brain barrier due
to surgical manoeuvre.