TABLE 1:

Validation of the methods for measuring brain volume performed in five volunteers

Structure	Volume (mL) Measured by 5-mm Thick Sections	Volume (mL) Measured by 3-mm Thin Sections
White matter	33.86 ± 3.33	34.00 ± 3.02
Gray matter	58.28 ± 3.77	58.44 ± 3.60
CSF	9.68 ± 3.26	9.54 ± 3.18

Note.—Data are mean ± SD. The mean difference between the two methods was 0.053 mL. A paired t test comparing 15 measurements made on thick sections to the same measurements made on thin sections was not significant (t statistic = 0.5524 with 14 degrees of freedom; P = .589).