Diffusion tensor imaging in elderly patients with idiopathic normal pressure hydrocephalus or Parkinson’s disease: diagnosis of gait abnormalities

Table 2 Regions of interest (ROI) analysis of fractional anisotropy (FA) and Evans index for three groups of patients

ROI	Control	INPH	PD	ANOVA	Tukey’s post-hoc
Anterior thalamic radiation	0.426 ± 0.010	0.318 ± 0.010	0.417 ± 0.007	<0.0001	INPH < control = PD
Forceps minor	0.466 ± 0.011	0.375 ± 0.011	0.461 ± 0.008	<0.0001	INPH < control = PD
Superior longitudinal fasciculus	0.514 ± 0.020	0.421 ± 0.020	0.505 ± 0.015	0.0020	INPH < control = PD
Corticospinal tract	0.646 ± 0.009	0.608 ± 0.009	0.643 ± 0.006	0.0040	INPH < control = PD
Forceps major	0.762 ± 0.025	0.673 ± 0.025	0.750 ± 0.018	0.0252	INPH < control = PD
Evans index	0.28 ± 0.02	0.38 ± 0.04	0.29 ± 0.03	<0.0001	INPH > control = PD

INPH, idiopathic normal pressure hydrocephalus; PD, Parkinson’s disease; ANOVA, one-way analysis of variance;
Data represent mean ± SD (standard deviation). INPH < control = PD, significant FA reductions in INPH compared to control and PD, INPH > control = PD, significant Evans index elevation in INPH compared to control and PD.

ISSN: 2045-8118