The Study in Frontal Ventricular Measurement and Correlation between Cerebroventricular Index and Cephalic Index on Normal Computed Tomography

ABSTRACT

The study was undertaken to assess the ventricular system of the brain in normal Korean, using the computed tomography(CT). The CT examination of 1000 normal patients between the ages of 1 to 83 years, performed at Inha hospital, were evaluated. Determination of the ratio between the width of the brain and a dimension representing the distance between the outer borders of the lateral ventricles was made at two levels. The ratio, the cerebroventricular index(CVI), seems to be a reliable, easier indicator of ventricular size. The standards vary with the age of the patients. The results are as follows ; 1) There was no significant difference with sex. 2) The cerebroventricular indexes of the lateral ventricular at the widest bifrontal(CVI) and narrowest bicaudate diameters(CCI) were 0.300+/-0.033, and 0.105+/-0.022. 3) There was correlation between cerebroventricular ratio and age with increase of age, cerebroventricular ratio increased slightly. 4) There was slight correlation between cerebroventricular index(CVI) and cephalic index(CI). 5) The CVI appears to be more sensitive than the CCI in the detection of changes in ventricular size. 6) Our suspected hydrocephalic indexes(HI) are as follows ; CVI < or = 1/3 within normal range, 1/3hydrocephalus, 0.4hydrocephalus, 0.5hydrocephalus.