TABLE 5.

Leave-one-brain region out cross-validation of multiple linear regression analyses between DTI and histological parameters.

	All brain regions	cc	layer V	layer VI	CA3b
	R	R	R	R	R
AIMyelin	0.206	0.289	0.049	0.353	0.557
AIGFAP	0.226	0.030	0.097	−0.045	0.206
CD	0.157	−0.088	−0.217	−0.014	0.300
Average length	−0.002	0.045	−0.223	−0.019	−0.050
Branches	0.154	−0.059	0.023	0.125	−0.071
Branch length	0.165	0.358	0.288	0.020	0.168
Slab voxels	0.165	0.055	0.032	−0.034	−0.456
Junction voxels	0.108	0.185	0.236	0.353	0.384
Junctions	0.107	−0.016	−0.063	0.132	0.441
Endpoint voxels	0.190	−0.016	0.039	0.020	0.228
Triple points	0.109	0.086	0.072	0.007	0.234
Quadruple points	0.070	−0.059	0.001	−0.022	0.242

Cross-validation by leaving-one-brain region out (R) revealed that the inclusion of the subfield CA3b was necessary for predicting histology based on DTI. AI, anisotropy index; CA, cornus ammonis; cc, corpus callosum; CD, cell density.