Abstract
CT brain scans were performed on approxima tely 1500 patients at the Matsudo clinic. Among them the apparently normal CT pictures were selected for quantitative measurements from 89 patients with convulsive seizures, headache or head trauma, but without any neurological ab normalities or any positive past or family history.
(1) Size and shape of the brain parenceyma
No remarkable changes in the transverse dia meter (b) with age were noted, but the longitudi nal diameter (a) gradually increasted up to the age of 2 years.
(2) Ventricular system
The ratio of the largest width of the anterior horn of the lateral ventricle to the transverse diameter of the brain (c/b) remained less than 30% in each age group, being some-what larger below the age of 1 year, low between 2 and 9 years and subsequently increasind with advancing age.The ratio of the lateral ventriclecaudate nucleus distance to transverse diameter of the brain fell between 9-11% in each age group.The width of the 3rd ventricle (e) was less than 5.7mm in each age group.
3) Subarachnoid space
In six children below the age of 1 year, the width was 1.9mm in one patient, 3.8mm in two patients and 5.7mm in three patients.In all sub jects, subarachnoid space with a constant width was noted only in the frontal temporal regions.
In only one achild between 1 and 2 years of age, the subarachnoid space had a width of 1.9mm while measurement was not possible in seven other patients.
In a ll subjects above the age of 2 years, mea surment was not possible.
4) Longitudinal These were distinctly noted below 1 year and above the age of 40 years.cerebral fissure and Sylvian fissure and sulci cerbri
These were distinctly noted below 1 year and above the age of 40 years.
