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. 2011 Jan 24;33(1):203–212. doi: 10.1002/hbm.21205

Table II.

Group demographics, ADC and FA values, and number of seed voxels per region of interest for the early HD patients and their controls

Control group B n: 14, male: 7 Early HD n: 16, male: 12
Mean SD Range Mean SD Range
Age (yrs) 51.4 7.9 42–65 48.2 10 31–63
CAG 43 1.6 41–46
IQ 102.6 6.6 88–115 99.6 12 72–118
TFC 12.9 0.3 12–13 10.6 § 2 7–13
UHDRS 3.1 2.8 0–7 18.3 § 10.4 6–45
mean ± SD mean ± SD p
ADC ROI
Corpus Callosum 1934 ± 312 0.80 ± 0.031 1445 ± 371 *** 0.85 ± 0.040 * 0.000
Caudate Nucleus 57 ± 12 0.74 ± 0.048 40 ± 7 *** 0.83 ± 0.069 * 0.001
Thalamus 2480 ± 531 0.74 ± 0.032 3102 ± 1062 0.74 ± 0.034 0.863
FA ROI
Corpus Callosum 1934 ± 312 0.75 ± 0.012 1445 ± 371 *** 0.73 ± 0.033 0.046
Caudate Nucleus 57 ± 12 0.17 ± 0.018 40 ± 7 *** 0.19 ± 0.019 0.072
Thalamus 2480 ± 531 0.33 ± 0.021 3102 ± 1062 0.32 ± 0.034 0.950
# voxels ± SD mean ± SD # voxels ± SD mean ± SD
ADC Fiber pathway
Corpus Callosum 1934 ± 312 0.89 ± 0.051 1445 ± 371 *** 0.95 ± 0.067 ** 0.008
Caudate Nucleus 57 ± 12 0.88 ± 0.107 40 ± 7 *** 0.97 ± 0.079 0.023
Thalamus 2480 ± 531 0.85 ± 0.080 3102 ± 1062 0.93 ± 0.063 ** 0.007
Motor cortex 589 ± 117 0.79 ± 0.023 593 ± 110 0.82 ± 0.027 ** 0.001
Prefrontal cortex 1118 ± 239 0.88 ± 0.023 1202 ± 274 0.95 ± 0.056 ** 0.000
FA Fiber pathway
Corpus Callosum 1934 ± 312 0.48 ± 0.013 1445 ± 371 *** 0.47 ± 0.017 0.027
Caudate Nucleus 57 ± 12 0.35 ± 0.027 40 ± 7 *** 0.35 ± 0.021 0.592
Thalamus 2480 ± 531 0.41 ± 0.016 3102 ± 1062 0.41 ± 0.024 0.644
Motor cortex 589 ± 117 0.38 ± 0.019 593 ± 110 0.37 ± 0.024 0.059
Prefrontal cortex 1118 ± 239 0.39 ± 0.016 1202 ± 274 0.38 ± 0.014 ** 0.006

SD, standard deviation; CAG, CAG repeat length; IQ, estimate of premorbid intelligence quotient; TFC, total functional capacity score.

UHDRS, Unified Huntington's disease rating scale total motor score.

§

Significant difference from control group, P < 0.01. ROI, region of interest analysis; ADC, apparent diffusion coefficient in μm2/ms; FA, fractional anisotropy (no unit); Fiber pathway, fiber pathways analysis between the listed region and the rest of the brain.

*

P <0.017,

**

P < 0.01 (adjusted for multiple comparisons). # voxels: mean number of voxels in the listed seed region.

***

Number of voxels differs significantly from healthy controls.