Cerebral microbleeds: MRI features

Written and reviewed by Dr Ibrahim Imam, Consultant Neurologist. Last reviewed .

Cerebral microbleeds: MRI features. Microbleeds show as well-defined lesions 2-10mm in size. Fully referenced neurology checklist.

MRI features

  • Microbleeds show as well-defined lesions 2-10mm in size
  • They are round or ovoid but not linear
  • They appear black with blooming effect on T2* weighted MRI
  • At least half of the lesion is surrounded by brain parenchyma

Magnetic locations

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MRI microbleed rating scales

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Radiological differentials

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Synonym

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Acronym

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References

  1. Greenberg SM, Vernooij MW, Cordonnier C, et al. Cerebral microbleeds: a guide to detection and interpretation. Lancet Neurol 2009; 8:165-174.
  2. Gregoire SM, Chaudhary UJ, Brown MM, et al. The Motionless Anatomical Rating Scale (MARS): reliability of a tool to map brain microbleeds. Neurology 2009; 73:1759-1766.
  3. Sveinbjornsfottir S, Sigurdsson S, Aspelund T, et al. Cerebral microbleeds in the population based AGES-Reykjavik study: prevalence and location. JNNP 2008; 79:1002-1006.
  4. Koennecke HC. Cerebral microbleeds on MRI: prevalence, associations, and potential clinical implications. Neurology 2006; 66:165-171.
  5. Cordinnier C, Potter GM, Jackson CA, et al. Improving inter-observer agreement about brain microbleeds: development of the Brain Observer MicroBleed Scale (BOMBS). Stroke 2009; 40:94-99.
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