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Related Experiment Videos

Differentiation between cerebral embolism and thrombosis on sequential CT scans.

N Tomura1, A Inugami, I Kanno

  • 1Department of Radiiology and Nuclear Medicine, Research Institute for Brain and Blood Vessels-Akita, Japan.

Journal of Computer Assisted Tomography
|January 1, 1990
PubMed
Summary

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Sequential computed tomography (CT) helps differentiate between embolic and thrombotic cerebral infarction. Embolic strokes show homogeneous, widespread low attenuation, while thrombotic strokes are often inhomogeneous and cortical-sparing.

Area of Science:

  • Neurology
  • Radiology
  • Cerebrovascular Diseases

Background:

  • Differentiating between embolic and thrombotic cerebral infarction is crucial for treatment.
  • Computed tomography (CT) is a key imaging modality in stroke diagnosis.

Purpose of the Study:

  • To evaluate the utility of sequential CT in distinguishing embolic from thrombotic cerebral infarction.
  • To identify characteristic CT findings for each type of infarction.

Main Methods:

  • Sequential CT scans were performed on 32 patients with middle cerebral artery distribution infarction.
  • Patients were categorized into embolic (n=20) and thrombotic (n=12) groups based on clinical and angiographic criteria.
  • CT findings, including attenuation patterns and lesion extent, were analyzed.

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Main Results:

  • Embolic infarction typically presented as a large, homogeneous low attenuation area extending from deep brain to cortex (18/20 patients).
  • Thrombotic infarction often showed an inhomogeneous low attenuation area, frequently sparing the cortex (8/12 patients).
  • Hemorrhagic transformation was more frequent in the embolic group, and CT identified arterial occlusion in 7/20 embolic cases.

Conclusions:

  • Sequential CT imaging provides valuable information for differentiating embolic and thrombotic cerebral infarction.
  • Distinct CT patterns, including attenuation homogeneity and lesion extent, aid in etiological diagnosis.
  • These findings can guide further management strategies for stroke patients.