Subcallosal striations: early findings of multiple sclerosis on sagittal, thin-section, fast FLAIR MR images.

Abstract:

PURPOSE:To determine how sensitive and specific the magnetic resonance (MR) imaging finding of subcallosal striations is for multiple sclerosis (MS). MATERIALS AND METHODS:In 18 patients with clinically suspected MS and 32 age-matched patients without MS, sagittal 2-mm fast fluid-attenuated inversion-recovery (FLAIR) imaging was added to the routine MR studies of the brain. The images were reviewed for the presence of subcallosal striations, that is, linear, 1-mm-thick foci of hyperintensity perpendicular to the ependyma, like a stack of coins. The images were masked to exclude the hemispheric white matter and were interpreted without knowledge of patient age or medical history. RESULTS:Seventeen patients with clinical MS had subcallosal striations; one did not. Of the 32 patients without MS, five had subcallosal striations and 27 did not. Subcallosal striations were highly associated (P < .001) with clinical MS. CONCLUSION:Subcallosal striations are thought to represent perivenular demyelination, that is, the same process that later produces the "ovoid" lesions visible on routine MR images. Subcallosal striations are not seen on routine axial MR images and can be seen only on 2-mm sagittal FLAIR images.

journal_name

Radiology

journal_title

Radiology

authors

Palmer S,Bradley WG,Chen DY,Patel S

doi

10.1148/radiology.210.1.r99ja38149

subject

Has Abstract

pub_date

1999-01-01 00:00:00

pages

149-53

issue

1

eissn

0033-8419

issn

1527-1315

journal_volume

210

pub_type

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