Table 3: Individual volumes of the corpus callosum, right and left lateral ventricles obtained from MRI of the children at 1 and 2 years old1.

ChildCorpus callosum volume (mL)Right lateral ventricle volume (mL)Left lateral ventricle volume (mL)
1 year2 years1 year2 years1 year2 years

14.23.8**9.9** 15.2**6.2*11.0**
20.7**0.5**8.6**9.8**12.2**15.7**
30.5**1.2**71.6**90.3**242.0**306.2**
40.3** 0.2**147.2**310.2**220.8**281.0**
50.3**0.2**36.3**33.8**235.6**240.3**
62.3**2.3**3.77.3**5.8*8.7**
70.8**0.7**151.3**172.8**21.3**27.9**
82.7**3.47**9.6**9.7**11.0**11.2**
92.5**1.9**2.85.03.04.5
100.9**2.0**16.0**19.0**18.0**21.0**
111.6**1.8**19.1**18.5**24.7**23.5**
121.9**2.0**13.2**19.8**12.9**18.9**
130.3**1.6**33.1**98.9**49.6**143.4**
143.0*4.8*9.3**8.7**7.2**6.9*
150.5**0.7**5.3*8.0**6.2*10.3**

1Children numbers 12–15 belong to the group of Lennox-Gastaut syndrome that had not been preceded by West syndrome.
*One and **two standard deviations from the mean of the normative volumetric values corrected by age from normal children of 0–26 months (unpublished data from our research group).