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Bilateral cingulum fiber reductions in temporal lobe epilepsy with unilateral hippocampal sclerosis.

Abstract：

PURPOSE:To evaluate whether white matter tracts within the Papez circuit are altered in patients with unilateral hippocampal sclerosis (HS). METHODS:Twenty patients with histologically proven unilateral HS and 20 age-matched controls were studied with a 3T Epilepsy-dedicated MRI protocol including a MPRAGE sequence for hippocampus volumetry and a diffusion tensor imaging (DTI) sequence (61 diffusion-encoding directions, 2×2×2mm3 voxels) for diffusion tensor tractography (DTT). An energy-based global tracking algorithm was used to calculate streamline counts (SC) and fractional anisotropy (FA) of cingulate, fornix, and mammillo-thalamic tracts, respectively. RESULTS:Sclerotic hippocampi were significantly smaller compared to the contralateral side and to age-matched controls. Cingulum SC but not FA were reduced on the hippocampal sclerosis (258+81.0) and contralateral side (271+85.6) compared to age-matched controls (447+138). CONCLUSION:Focusing on white matter tracts of the Papez circuit we showed that in patients with intractable temporal lobe epilepsy unilateral hippocampal sclerosis is associated with a bilateral reduction of cingulum association fibers projecting from the cingulate gyrus to the parahippocampal gyrus.

journal_name

Eur J Radiol

journal_title

European journal of radiology

authors

Urbach H,Egger K,Rutkowski K,Nakagawa JM,Schmeiser B,Reisert M,Brandt A,Steinhoff BJ,Schulze-Bonhage A,Hammen T

doi

10.1016/j.ejrad.2017.07.015

subject

Has Abstract

pub_date

2017-09-01 00:00:00

pages

53-57

eissn

0720-048X

issn

1872-7727

pii

S0720-048X(17)30299-1

journal_volume

94

pub_type

杂志文章

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