Table 1.

The mean values and standard errors of the DTI-based midsagittal corpus callosum cross sectional (a) areas (mm²) and corresponding (b) fractional anisotropy, (c) radial diffusivities, and (d) mean diffusivities of the CC2-CC7 segments and entire CC.

		Average Regional Corpus Callosum Midsagittal
		Areas and Corresponding DTI Metrics (µ±σ)
		Area (mm²)	FA (× 1000)	Radial Diffusivity (µm² msec⁻¹)	Mean Diffusivity (µm² msec⁻¹)
CC2	Child	173.7±33.8	535.2±42.2	639.6±59.9	975.1±69.7
	Adult	184.8±37.1	544.5±38.6	612.4±61.4	943.3±64.3
	All	180.8±36.2	541.2±40.0	622.0±62.0	954.6±67.7
	C vs. A (p)	0.11	0.22	0.02	0.01
CC3	Child	90.6±21.2	406.0±42.8	778.0±86.9	1034.4±91.8
	Adult	97.3±20.3	420.9±29.3	772.7±83.0	1041.7±96.2
	All	94.9±20.8	415.6±35.3	774.6±84.1	1039.1±94.3
	C vs. A (p)	0.09	0.026	0.74	0.69
CC4	Child	79.3±14.3	388.8±48.7	794.7±89.0	1040.5±87.1
	Adult	86.7±12.6	410.2±35.8	773.6±79.4	1032.9±90.0
	All	84.1±13.6	402.6±41.9	781.1±83.2	1035.6±8.7
	C vs. A (p)	0.004	0.007	0.18	0.66
CC5	Child	77.2±16.2	378.8±58.3	805.8±132.8	1043.7±129.6
	Adult	90.6±14.3	424.6±36.0	761.7±71.3	1031.3±82.0
	All	85.8±16.2	408.3±50.1	777.4±99.4	1035.7±101.1
	C vs. A (p)	<0.0000001	4e-007	0.02	0.52
CC6	Child	74.6±16.7	407.4±67.0	848.5±120.5	1129.5±118.5
	Adult	82.9±15.1	443.9±46.6	808.2±95.4	1114.4 ±105.6
	All	79.9±16.1	430.9±57.2	822.5±106.3	1119.8 ±110.1
	C vs. A (p)	0.006	0.0006	0.046	0.47
CC7	Child	191.8±32.7	573.7±43.5	652.7±65.6	1045.1±71.8
	Adult	210.8±28.8	96.6±30.1	605.6±54.3	1000.6±72.9
	All	204.1±31.5	588.5±36.9	622.3±62.5	1016.4±75.3
	C vs. A (p)	0.001	0.0009	0.00004	0.002
Midsagittal Whole CC	Child	697.0±99.9	478.6±33.8	721.5±57.1	1033.7±59.4
	Adult	764.5±83.51	499.7±21.7	691.0±49.6	1011.7±56.9
	All	740.5±95.0	492.1±28.3	701.8±54.2	1019.5±58.5
	C vs. A (p)	0.0001	0.00001	0.003	0.048

A = Adult; C = Child.