Blood age in MRI and CT

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Causes of hemorrhage can be

  1. Hypertensive ICB
  2. Lobar hemorrhage
  3. AVM
  4. Traumatic ICB
  5. Hemorrhagic neoplasm

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Unenhanced MRI is done. What does it show?

Hyperintense rim with an isointense center:

  • This is not a ring enhancing lesion because ring enhancing lesion is ONLY applied when contrast is given.
  • Patient has hematoma with different blood ages in the lesion (hyperintense = subacute, isointense = acute blood).
    – In CT, the mass is hyperdense so the predominant blood age is acute
    – This is acute hypertensive ICB.

Blood age in CT

Blood age in MRI

Learning point: Know the appearane of different blood age in MRi and CT.

Reference: radiopaedia.org

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