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01-01-2016 | Original Communication

Characteristic diffusion tensor tractography in multiple system atrophy with predominant cerebellar ataxia and cortical cerebellar atrophy

Authors: Yusuke Fukui, Nozomi Hishikawa, Kota Sato, Yumiko Nakano, Ryuta Morihara, Yasuyuki Ohta, Toru Yamashita, Koji Abe

Published in: Journal of Neurology | Issue 1/2016

Abstract

The objective of this study is to determine whether diffusion tensor imaging (DTI) tractography analysis is a potential method for differentiating cerebellar ataxia patients with multiple system atrophy with predominant cerebellar ataxia (MSA-C) and cortical cerebellar atrophy (CCA). Forty-one MSA-C patients (62.7 ± 8.1 years old, mean ± SD) and age- and gender-matched 15 CCA patients (63.0 ± 8.6 years old) were examined. Tractography was performed using the DTI track module provided in the MedINRIA version 1.9.4, and regions of interest were drawn manually to reconstruct an efferent fiber tract and two afferent fiber tracts via the cerebellum. Compared with CCA, MSA-C patients showed significant declines of fractional anisotropy (FA) values of afferent 1 and 2 (p < 0.01, respectively) and a significant increase of the radial diffusivity (RD) value in afferent 1 (p < 0.05). Receiver-operator characteristic curve analysis showed 85.7 % sensitivity and 75.0 % specificity of FA values in afferent 1 (cutoff value 0.476). Linear regressions showed strong correlations between FA value and disease duration in CCA patients (efferent 1, r = −0.466; afferent 2, r = −0.543; both p < 0.05), and between the FA value and the ratio of the standardized scale for the assessment and rating of ataxia (SARA)/disease duration in MSA-C patients (afferent 1, r = −0.407; p < 0.01). The present DTI tractography newly showed that the FA values of two afferent fiber tracts showed significant declines in MSA-C patients, and afferent 1 showed good diagnostic sensitivity and specificity. When combining the FA values of efferent 1 with disease duration, the present DTI tractography analysis could be useful for differentiating MSA-C and CCA patients.

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Title: Characteristic diffusion tensor tractography in multiple system atrophy with predominant cerebellar ataxia and cortical cerebellar atrophy
Authors: Yusuke Fukui
Nozomi Hishikawa
Kota Sato
Yumiko Nakano
Ryuta Morihara
Yasuyuki Ohta
Toru Yamashita
Koji Abe
Publication date: 01-01-2016
Publisher: Springer Berlin Heidelberg
Published in: Journal of Neurology / Issue 1/2016
Print ISSN: 0340-5354
Electronic ISSN: 1432-1459
DOI: https://doi.org/10.1007/s00415-015-7934-x

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Characteristic diffusion tensor tractography in multiple system atrophy with predominant cerebellar ataxia and cortical cerebellar atrophy

Abstract

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Abstract

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