Monday, February 28, 2011

Diffusely Increased Attenuation of the Subarachnoid Space

  • Subarachnoid hemorrhage: May have enlarged ventricles and intraventricular blood.
  • Cellular material: Pus, tuberculosis, sarcoid, cancer. May have enlarged ventricles.
  • Intracranial hypotension: Dilated dural sinuses, normal-sized ventricles.
  • Global anoxia: Diffuse loss of gray-white differentiation, white cerebellum sign, normal-sized ventricles.
  • Contrast: From myelogram or intravenous contrast leakage in patients with renal failure.

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