A sensitive diffusion tensor imaging quantification method to detect language laterality in children: correlation with the Wada test.

Abstract:

:Using diffusion tensor imaging tractography and color-coded anisotropy map quantification, we investigated asymmetry of the arcuate fasciculus to determine language laterality in children and compared it with the Wada test. Arcuate fasciculus volume and fractional anisotropy were measured after tractography. We also quantified the fiber orientation distribution in the arcuate fasciculus region, ie, the fraction of arcuate fasciculus fibers oriented in the anteroposterior and mediolateral directions. A Laterality Index was calculated for each of the measured parameters. Volumetric analysis of the arcuate fasciculus showed asymmetry favoring the language dominant hemisphere (P = .02), while fractional anisotropy showed no significant asymmetry (P = .07). The mean anteroposterior and mediolateral components on the language dominant side were significantly higher than on the nondominant side (P = .003 and .002, respectively). The Laterality Index values were concordant with the Wada test results except for 1 case. Fractional anisotropy also falsely lateralized language in 1 case.

journal_name

J Child Neurol

authors

Tiwari VN,Jeong JW,Asano E,Rothermel R,Juhasz C,Chugani HT

doi

10.1177/0883073811409225

subject

Has Abstract

pub_date

2011-12-01 00:00:00

pages

1516-21

issue

12

eissn

0883-0738

issn

1708-8283

pii

0883073811409225

journal_volume

26

pub_type

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