Time course of arterial hyperintensity with fast fluid‐attenuated inversion‐recovery imaging in acute and subacute middle cerebral arterial infarction
Open Access
- 22 May 2001
- journal article
- research article
- Published by Wiley in Journal of Magnetic Resonance Imaging
- Vol. 13 (6), 987-990
- https://doi.org/10.1002/jmri.1142
Abstract
The purpose of this study was to evaluate the time course of arterial hyperintensity (AH) in acute and subacute cerebral infarctions of the middle cerebral artery (MCA) distribution by using fast fluid‐attenuated inversion‐recovery (FLAIR) imaging. A total of 40 FLAIR MR examinations were performed in 27 patients with MCA infarction within 13 days after ictus. Thirteen patients underwent two MR examinations during this period. Thrombotic or embolic infarctions were included in this study, but lacunar infarctions were excluded. 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 frequently found at the sylvian fissure (87%), followed by the sulci (54%), and the horizontal segment of MCA (29%) in the affected MCA distribution. Although AH could be seen even at 13 days after ictus, the presence of AH declined over time. AH represented an early sign of acute embolic or thrombotic infarction. J. Magn. Reson. Imaging 2001;13:987–990.Keywords
This publication has 7 references indexed in Scilit:
- Fast FLAIR sequence for detecting major vascular abnormalities during the hyperacute phase of stroke: a comparison with MR angiographyNeuroradiology, 1999
- MRI of acute cerebral infarction: a comparison of FLAIR and T2-weighted fast spin-echo imagingNeuroradiology, 1997
- Fluid-Attenuated Inversion Recovery (FLAIR) for Assessment of Cerebral InfarctionStroke, 1996
- Acute human stroke studied by whole brain echo planar diffusion‐weighted magnetic resonance imagingAnnals of Neurology, 1995
- High Signal Regions in Normal White Matter Shown by Heavily T2-Weighted CSF Nulled IR SequencesJournal of Computer Assisted Tomography, 1992
- Cerebral infarction: early detection by means of contrast-enhanced cerebral arteries at MR imaging.Radiology, 1991
- Early cerebral infarction: gadopentetate dimeglumine enhancement.Radiology, 1990