Fast FLAIR of the brain: the range of appearances in normal subjects and its application to quantification of white-matter disease.

Abstract:

:Axial fast FLAIR images of the brains of 40 normal volunteers in four age groups between 16 and 55 years were examined and the number and size of areas of increased white-matter signal recorded. Increased signal in the corticospinal tract region was seen at the level of the internal capsule in all subjects, extending up towards the centrum semiovale and down towards the pons for 0.5-5.5 cm (median 2.5 cm). In all cases the IIIrd and IVth ventricles were outlined by a thin line of high signal. Focal areas of high signal (caps) were seen around the frontal and occipital horns in 90% and 77% respectively; 54% of caps were asymmetrical. None of the above features varied with the age or sex of the subject, but the numbers of discrete white matter 'lesions' increased with age. The findings are used to suggest guidelines for the identification of areas of 'normal' high signal to be excluded in quantification of lesions on fast FLAIR images.

journal_name

Neuroradiology

journal_title

Neuroradiology

authors

Gawne-Cain ML,Silver NC,Moseley IF,Miller DH

doi

10.1007/s002340050402

subject

Has Abstract

pub_date

1997-04-01 00:00:00

pages

243-9

issue

4

eissn

0028-3940

issn

1432-1920

journal_volume

39

pub_type

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