MRI findings in eastern equine encephalitis: the “parenthesis” sign

Two patients with eastern equine encephalitis (EEE) presented to a tertiary referral center. Both subjects’ brain magnetic resonance imaging showed T2/FLAIR (fluid-attenuated inversion recovery) hyperintensities including linear areas of hyperintensity in the external and internal capsules with spar...

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Published inClinical imaging Vol. 40; no. 2; pp. 222 - 223
Main Authors Nickerson, Joshua P., Kannabiran, Suma, Burbank, Heather N.
Format Journal Article
LanguageEnglish
Published United States Elsevier Inc 01.03.2016
Elsevier Limited
Subjects
Abnormalities
Aged, 80 and over
Brain
Brain - pathology
Eastern equine encephalitis
Encephalitis
Encephalitis Virus, Eastern Equine - isolation & purification
Encephalomyelitis, Eastern Equine - diagnosis
Encephalomyelitis, Eastern Equine - virology
Humans
Imaging
Infections
Inversions
Magnetic resonance imaging
Magnetic Resonance Imaging - methods
Male
Middle Aged
MRI
NMR
Nuclear magnetic resonance
Nuclei
Parenthesis
Patients
Radiology
Viral encephalitis
West Nile virus
United States > US
Parenthesis
MRI
Viral encephalitis
Eastern equine encephalitis
Online AccessGet full text
ISSN0899-7071
1873-4499
DOI10.1016/j.clinimag.2015.10.012

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Summary:Two patients with eastern equine encephalitis (EEE) presented to a tertiary referral center. Both subjects’ brain magnetic resonance imaging showed T2/FLAIR (fluid-attenuated inversion recovery) hyperintensities including linear areas of hyperintensity in the external and internal capsules with sparing of the lentiform nuclei. Single case reports of imaging findings in EEE exist with nonspecific patterns of abnormality. We propose that this “( ) parentheses sign” on T2 or FLAIR imaging may distinguish EEE from other processes.
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ISSN:0899-7071
1873-4499
DOI:10.1016/j.clinimag.2015.10.012