Crescent sign of arterial dissection

The crescent sign refers to the high signal crescent seen in the wall of a vessel when dissected. This may be seen both on T1 or T2 sequences depending on the age of the blood (see ageing blood on MRI). It is classically referred to in internal carotid artery dissection.

It should not be confused with other radiological crescents, including:

See also

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Article Information

rID: 6695
System: Vascular
Section: Signs
Tag: stub
Synonyms or Alternate Spellings:
  • Crescent sign
  • Crescent sign of an arterial dissection

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