[Investigation of cerebral blood volume measurement].
OBJECTIVE
Cerebral blood blow (ml/100g/min) (CBF) and cerebral blood volume (%) (CBV) were determined in 102 patients (68 men and 34 women; average age, 55.6 years) with diagnostic cerebral blood flow accident.


METHODS
CBF was obtained by xenon inhalation computed tomography (Xe CT) and transit time (TT) by perfusion CT. CBV was calculated under the expression CBV=CBF x TT. The patients were divided into three categories: mild (outpatient), moderate (inpatient), and serious (dead), and CBF and CBV were compared between categories.


RESULTS
On regions of interest (ROI) in the thalamus, the value for mild cases was 58.8+/-10.4 ml/100g/min (CBF) and that for moderate cases was 40.2+/-19.4, a significant difference. In serious cases, CBV was decreased in the thalamus, but there was no difference in CBF between mild and moderate cases.


CONCLUSIONS
CBV was useful for determining prognosis in severe cases of diagnostic cerebral blood flow accident.
Department of Radiology, Toho University, Oomori Hospital.
Keiichi
K
Machida
Motoharu
M
Ootsu
Hideharu
H
Nakano
D000328:Adult; D000368:Aged; D002560:Cerebrovascular Circulation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D020521:Stroke / Q000000981:diagnostic imaging / Q000503:physiopathology; D014057:Tomography, X-Ray Computed / Q000379:methods*; D014978:Xenon
D014978:Xenon