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Title: is leukoaraiosis on CT an accurate surrogate marker for the presence of microbleeds in acute stroke patients?
Authors: Görner, Astrid ×
Lemmens, Robin
Schrooten, Maarten
Thijs, Vincent #
Issue Date: Mar-2007
Series Title: Journal of Neurology vol:254 issue:3 pages:284-289
Abstract: Microbleeds (MB) detected on gradient echo magnetic resonance images (GRE) are a potential risk factor for intracerebral hemorrhage after thrombolysis or oral anticoagulation. We assessed whether the presence of MB could be predicted from the extent of white matter disease (WMD) on computed tomography (CT). METHODS: We studied consecutive TIA or ischemic stroke patients who presented to the ER and who underwent both CT and GRE. WMD was rated on CT using a three point scale by two independent observers. The presence of MB was assessed on GRE. Logistic regression was used to predict the presence of MB on GRE. RESULTS: 199 consecutive patients underwent both CT and GRE. MB were identified on GRE in 56 patients (28.1%). After adjustment for age and sex, MB were more frequent in patients with leukoaraiosis (OR 2.8 per 1-point increase on the Van Swieten scale, p<0.001) and in patients presenting with a lacunar or posterior circulation syndrome (OR 2.0, p=0.048). The area under the ROC-curve derived from the logistic model was 0.70 (95% CI 0.61-0.79). Age, sex, hypertension, diabetes or the presence of left ventricular hypertrophy on ECG were not different in patients with or without MB. CONCLUSION: White matter disease on CT is associated with the presence of microbleeds on GRE. However, leukoaraiosis does not detect the presence of MB accurately enough to be considered a surrogate marker.
URI: 
ISSN: 0340-5354
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Research Group Experimental Neurology
Laboratory for Cognitive Neurology
Laboratory for Neurobiology (Vesalius Research Center)
× corresponding author
# (joint) last author

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