CT
Axial non-contrast
Section: Signs
Modality: CT (non-contrast)

- “ The swirl sign refers to the noncontrast CT appearance of acute extravasation of blood into a hematoma. It represents unclotted fresh blood which ...”

Used in the following article:

  • Swirl sign (intracranial hemorrhage) - “ The swirl sign refers to the non-contrast CT appearance of acute extravasation of blood into a hematoma, for example an extradural hematoma or sub...”

View full size version of Subdural hematoma - swirl sign

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