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AJR Am J Roentgenol. 2007 Oct;189(4):913-21.

Hyperintensity in the subarachnoid space on FLAIR MRI.

Author information

1
Department of Radiology, Princess Alexandra Hospital, Ipswich Rd., Woolloongabba, Queensland, Australia 4102.

Abstract

OBJECTIVE:

The purposes of this essay are to illustrate the causes of FLAIR hyperintensity in the subarachnoid space and to outline the mechanisms of the findings.

CONCLUSION:

FLAIR subarachnoid space hyperintensity may be encountered with both pathological conditions and artifacts. Knowledge of these conditions and appearances coupled with any associated findings may suggest the cause of the FLAIR subarachnoid space hyperintensity. A diffuse distribution and a lack of ancillary findings often remain nonspecific and may require clinical correlation and CSF analysis.

PMID:
17885065
DOI:
10.2214/AJR.07.2424
[Indexed for MEDLINE]

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