Ventricular Size in Patients With Presenile Dementia of the Alzheimer's Type

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Abstract
• The computed tomograms (CTs) of eight mild to moderately impaired patients with presenile dementia of Alzheimer's type (aged 53 to 64 years) were compared with scans of ten healthy age-matched controls. Two computer programs and a variety of linear measurements were used to analyze the CTs. A single computerized measure of fluid volume on the slice at the maximum width of the bodies of the lateral ventricles correctly predicts the group membership of 88.89% of the subjects. Computerized measures on other CT slices do not increase discrimination between the groups. Easily performed linear measures correctly predict the group membership of 78.9% of the subjects. Computerized measures of ventricular size may provide highly valuable information for the diagnosis of Alzheimer's disease in the presenile age range.