The calculation of intracranial volume using CT scans

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Abstract
A method of calculating intracranial volume from horizontal computerized tomography scan slices is presented. The accuracy of this technique was confirmed by applying it to 10 dry skulls and comparing the values obtained with the true intracranial volumes, as determined by filling the skulls with water. Values ranging between 98.14% and 102.6% of the true values were obtained, the mean error being 1.13%. This technique is now being used to study intracranial volume changes in children with craniostenosis.