Large-diameter compression arteries as a possible facilitating factor for trigeminal neuralgia: analysis of axial and radial diffusivityReport as inadecuate




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Acta Neurochirurgica

, Volume 158, Issue 3, pp 521–526

First Online: 06 January 2016Received: 11 September 2015Accepted: 14 December 2015

Abstract

BackgroundNeurovascular compression NVC of the trigeminal nerve is associated with trigeminal neuralgia TN.
Some arteries that compress the trigeminal nerve are large, while others are small.
This study evaluated the influence of diameter of compression arteries DCA on NVC with and without TN using axial diffusivity AD and radial diffusivity RD of magnetic resonance MR imaging.

MethodsFifty TN patients with unilateral NVC, 50 asymptomatic patients with unilateral NVC, and 50 healthy controls HC were divided into three groups NVC with TN, NVC without TN, and HC.
The three groups were imaged with a 3.0-T MR system using three-dimensional fast imaging employing steady-state acquisition 3D FIESTA and diffusion tensor imaging DTI.
We compared the mean size of DCA between NVC with and without TN.
The mean values of AD and RD at the site of NVC were compared between the three groups.
Correlation analyses were performed between the DCA and the diffusion metrics AD and RD in NVC patients with and without TN.

ResultsThe mean DCA in NVC patients with TN 1.58 ± 0.34 mm was larger than that without TN 0.89 ± 0.29 mm.
Compared with NVC without TN and HC, the mean values of RD at the site of NVC with TN were significantly increased; however, no significant changes of AD were found between the groups.
Correlation analysis showed that DCA positively correlated with RD in NVC patients with and without TN r = 0.830, p = 0.000.
No significant correlation was found between DCA and AD r = 0.178, p = 0.077.

ConclusionsLarger-diameter compression arteries may increase the chances of TN, and may be a possible facilitating factor for TN.

KeywordsAxial diffusivity Demyelination Neurovascular compression Radial diffusivity Trigeminal neuralgia  Download fulltext PDF



Author: Wei Lin - Wan-ping Zhu - Yi-li Chen - Guo-can Han - Yue Rong - Yu-rong Zhou - Qiao-wei Zhang

Source: https://link.springer.com/



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