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. 2012 Feb;33(2):259–265. doi: 10.3174/ajnr.A2788

Table 2:

Predicted mean and SD for z-score calculations

Pediatric
Adult
Mean SD Mean SD
Males
    Anterior volume (mm3) 27.5 A + 69.7 94.4 586.1–1.19 A 94.4
    Posterior volume (mm3) 5.66 A + 30.9 21.8% 152.6–1.1 A 37
    Total volume (mm3) 33.6 A + 95.8 98 756.6–2.81 A 98
    Sagittal R2 (Hz) 0.0331 A + 10.7 0.88 Same Same
Females
    Anterior volume (mm3) 29.3 A + 116.9 101.5 659-.816 A 101.5
    Posterior volume (mm3) 1.59 A + 60 22.5 0.96 A + 71.3 22.5
    Total volume (mm3) 32.2 A + 171.5 106.5 795–1.84 A 106.5
    Sagittal R2 (Hz) 0.0331 A + 10.7 0.88 Same Same
Volume estimates
    Average height 0.142 A + 3.21 0.65 6.17–0.0219 A 0.65
    5/6 Area-length (ant.) 28.9 A + 54.7 91.6 586.1–0.668 A 91.6
    5/6 Area-length (total) 33.8 A + 150.1 112.6 798.1–2.24 A 112.6

Note:—A indicates age in years; ant., anterior.