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British Journal of Radiology (1976) 49, 233-237
© 1976 British Institute of Radiology
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The British Journal of Radiology, Vol 49, Issue 579 233-237, Copyright © 1976 by British Institute of Radiology

ARTICLES

The ventricular-brain ratio using planimetric measurement of EMI scans

V Synek and JR Reuben

A correlation has been shown between the cross-sectional area of the cerebral ventricular system and the cross-sectional area of the brain in 62 patients, using the EMI Scanner. The percentage ratio has been abbreviated to VBR. The patients were divided into normal, equivocal, cerebral atrophy and hydrocephalus, according to their PEG's. The measurements were obtained by the use of a plaimeter and by outlining the ventricular and cerebral perimeters from the EMI Polaroid pictures. The VBR was found to be approximately five in those patients without detectable pathology, about seven in equivocal cases, and above ten in abnormal cases (atrophy, hydrocephalus). The hydrocephalic readings were generally higher than those for cerebral atrophy.


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