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Diffusion tensor imaging findings of the brainstem in subjects with tonsillar ectopia

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Date
2018-03-01
Author
TÜZÜN, Umit
Toprak, HÜSEYİN
Aralasmak, AYŞE
Kurtcan, SERPİL
YETIS, Huseyin
Alkan, ALPAY
Ozdemir, HÜSEYİN
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Type
Article
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Abstract
We aimed to evaluate the differences between apparent diffusion coefficient (ADC), fractional anisotropy (FA), axial diffusivity (AD), and radial diffusivity (RD) values obtained from different cranial sites in subjects with Chiari I Malformation (CM-I) and borderline tonsillar ectopia (BTE), and to determine correlations between diffusion tensor imaging (DTI) metrics and the severity of tonsillar ectopia. A total of 73 subjects with CM-I and BTE and 35 control underwent MRI and DTI. In our study, ADC values measured from the level of medulla oblongata and the RD values measured in middle cerebellar peduncles, thalamus, and globus pallidus were higher in CM-I patients than in controls. FA values at the medulla oblongata level and AD values at the medulla oblongata and pons level higher in patients with CM-I. ADC and AD values measured at the pons level were higher in BTE subjects than in controls. Compared with BTE, the CM-I subjects- ADC values at the medulla oblongata and AD values at the pons level were higher. In addition, FAs at the pons and medulla oblongata level were higher. At the medulla oblongata level, a positive correlation was observed between ADC and the size of tonsillar ectopia. AD and FA values measured at the level of medulla oblongata and pons were positively correlated with the size of tonsillar ectopia. These findings may be related to the severity of microstructural changes involving neuronal tracts at the brainstem level due to tonsillar ectopia. DTI may be useful in determining the extent of microstructural changes at the tissue level in subjects with tonsillar ectopia.
Subject
Kurtcan S., Alkan A., YETIS H., TÜZÜN U., Aralasmak A., Toprak H., Ozdemir H., -Diffusion tensor imaging findings of the brainstem in subjects with tonsillar ectopia-, ACTA NEUROLOGICA BELGICA, cilt.118, ss.39-45, 2018
URI
https://hdl.handle.net/20.500.12645/6876
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  • Yayınlar - Eserler [9994]

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BEZMIALEM VAKIF UNIVERSITY

About us |Policies | Library | Contact us | Send Feedback | Sitemap | Admin

Bezmialem Vakıf Üniversitesi, Adnan Menderes Bulvarı Vatan Caddesi 34093 Fatih, İstanbul / TURKEY
Copyright © Bezmialem Vakıf Üniversitesi

Creative Commons Lisansı
Bezmialem Institutional Repository, Creative Commons Alıntı-GayriTicari-Türetilemez 4.0 Uluslararası Lisansı ile lisanslanmıştır.

OpenAccess@BVU

Support by  UNIREPOS