Magnetic Resonance Imaging White Matter Hyperintensities and Mechanism of Ischemic Stroke
作者:
Riitta Mäntylä,
Hannu Aronen,
Oili Salonen,
Tarja Pohjasvaara,
Mauno Korpelainen,
Teemu Peltonen,
Carl-Gustaf Standertskjöld-Nordenstam,
Markku Kaste,
Timo Erkinjuntti,
期刊:
Stroke
(OVID Available online 1999)
卷期:
Volume 30,
issue 10
页码: 2053-2058
ISSN:0039-2499
年代: 1999
出版商: OVID
关键词: cerebral ischemia;lacunar infarction;leukoencephalopathy;magnetic resonance imaging;white matter
数据来源: OVID
摘要:
Background and PurposeWe sought to determine the relations between infarct subtype and white matter hyperintensities (WMHIs) on MRI.Materials and MethodsWe studied 395 ischemic stroke patients with 1.0-T MRI. The number of lacunar, border-zone, and cortical infarcts was registered. WMHIs were analyzed in 6 areas. Univariate and multivariate statistical analyses were used to find the risk factors for different infarct subtypes and to study the connections between WMHIs and brain infarcts.ResultsLacunar infarcts were associated with hypertension (odds ratio [OR], 1.79; 95% CI, 1.17 to 2.73), alcohol consumption (OR, 1.96; 95% CI, 1.17 to 3.28), and age (OR, 1.03; 95% CI, 1.00 to 1.06). Border-zone infarcts were associated with carotid atherosclerosis (OR, 2.20; 95% CI, 1.15 to 4.19). Atrial fibrillation (OR, 3.02; 95% CI, 1.66 to 5.50) and carotid atherosclerosis (OR, 1.94; 95% CI, 1.12 to 3.36) were independent positive predictors, and history of hyperlipidemia (OR, 0.44; 95% CI, 0.26 to 0.75) and migraine (OR, 0.48; 95% CI, 0.25 to 0.93) were negative predictors for cortical infarcts. Patients with lacunar infarcts had more severe WMHIs than patients with nonlacunar infarcts in all WM areas (P≤0.001). Patients with border-zone infarcts showed severe periventricular lesions (P=0.002), especially around posterior horns (P=0.003). The extent of WMHIs in patients with cortical infarcts did not differ from that in those without cortical infarcts.ConclusionsVarious infarct subtypes have different risk profiles. The association between lacunar infarcts and WMHIs supports the concept of small-vessel disease underlying these 2 phenomena. The connection between border-zone infarcts and periventricular WMHIs again raises the question of the disputed periventricular vascular border zone.
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