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Freddy Ståhlberg

Expert

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Clinical lacunar syndromes as predictors of lacunar infarcts. A comparison of acute clinical lacunar syndromes and findings on diffusion-weighted MRI

Författare

  • Arne Lindgren
  • Gert Staaf
  • Bo Geijer
  • Sara Brockstedt
  • Freddy Ståhlberg
  • Stig Holtås
  • Bo Norrving

Summary, in English

OBJECTIVES: To evaluate if patients with acute lacunar syndromes have acute lacunar infarcts or other types of cerebral lesions on diffusion-weighted MRI. METHODS: Patients with acute lacunar syndromes underwent echo-planar diffusion MRI of the brain within 3 days after stroke onset. Localization and size of lesions with hyperintense signal were determined, compared with clinical characteristics and with findings on follow-up T2-weighted MRI. RESULTS: Twenty-three patients participated in the study. Thirteen patients had pure motor stroke, 1 pure sensory stroke, 8 sensorimotor stroke, and 1 ataxic hemiparesis. Twenty-two patients had at least one lesion with increased signal on diffusion-weighted MR images. These acute lesions were in the internal capsule/ basal ganglia/thalamus in 13 patients, subcortical white matter in 5 patients, brainstem in 2 patients, cortex (multiple small lesions) in 1 patient, and cortex + basal ganglia in 1 patient. The median volume of the lesions was 0.6 ml on the initial examination and on follow-up, of 17 patients after 1 to 5 months, 0.5 ml. CONCLUSIONS: Almost all patients with acute ischemic lacunar syndromes have acute lesions on echo-planar diffusion-weighted MRI within 3 days after stroke onset. These lesions are mostly small and subcortical, compatible with lacunar infarcts caused by single penetrating artery occlusion, but in a minor proportion of patients (2 of 23 in our study) a cortical involvement is found.

Avdelning/ar

  • Neurologi, Lund
  • Diagnostisk radiologi, Lund
  • Medicinsk strålningsfysik, Lund

Publiceringsår

2000

Språk

Engelska

Sidor

128-134

Publikation/Tidskrift/Serie

Acta Neurologica Scandinavica

Volym

101

Issue

2

Dokumenttyp

Artikel i tidskrift

Förlag

Wiley-Blackwell

Ämne

  • Neurology

Nyckelord

  • diffusion MRI
  • cerebral infarction
  • stroke
  • acute
  • lacunar syndrome
  • lacunar infarct

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1600-0404