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

Acta neurologica Belgica
Serpil KurtcanHuseyin Ozdemir

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...Continue Reading

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Citations

Feb 13, 2020·The Cerebellum·Maitane GarcíaJon Infante
May 11, 2020·Pain Medicine : the Official Journal of the American Academy of Pain Medicine·James R HoustonMark G Luciano
Feb 23, 2018·Neuropsychology Review·Jeffrey M RogersMarcus A Stoodley
May 31, 2019·Child's Nervous System : ChNS : Official Journal of the International Society for Pediatric Neurosurgery·Felice D'Arco, Mario Ganau

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