Time course of arterial hyperintensity with fast fluid-attenuated inversion-recovery imaging in acute and subacute middle cerebral arterial infarction

Citation
M. Maeda et al., Time course of arterial hyperintensity with fast fluid-attenuated inversion-recovery imaging in acute and subacute middle cerebral arterial infarction, J MAGN R I, 13(6), 2001, pp. 987-990
Citations number
11
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Radiology ,Nuclear Medicine & Imaging
Journal title
JOURNAL OF MAGNETIC RESONANCE IMAGING
ISSN journal
1053-1807 → ACNP
Volume
13
Issue
6
Year of publication
2001
Pages
987 - 990
Database
ISI
SICI code
1053-1807(200106)13:6<987:TCOAHW>2.0.ZU;2-L
Abstract
The purpose of this study was to evaluate the time course of arterial hyper intensity (AH) In acute and subacute cerebral infarctions of the middle cer ebral artery (MCA) distribution by using fast fluid-attenuated Inversion-re covery (FLAIR) imaging. A total of 40 FLAIR MR examinations were performed In 27 patients with MCA infarction within 13 days after ictus. Thirteen pat ients underwent two MR examinations during this period. Thrombotic or embol ic infarctions were included in this study, but lacunar infarctions were ex cluded. The presence or absence of AH and the location of AH were analyzed. Overall, AH was found In 24 (60%) of 40 FLAIR examinations within 13 days after onset. AH was seen In 17 (100%) examinations less than 24 hours old, four (40%) of 10 examinations 1-4 days old, two (18%) of 11 examinations 5- 9 days old, and one (50%) of two examinations 10-13 days old. AH was most f requently found at the sylvian fissure (87%), followed by the sulci (54%), and the horizontal segment of MCA (29%) In the affected MCA distribution. A lthough AH could be seen even at 13 days after Ictus, the presence of AH de clined over time. AH represented an early sign of acute embolic or thrombot ic infarction. J. Magn. Reson. Imaging 2001;13:987-990. (C) 2001 Wiley-Liss , Inc.