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Prominent aqueduct flow void in normal-pressure hydrocephalus (MRI)

T2-weighted MRI demonstrating a prominent flow void in the aqueduct, comparable with the degree of flow void in the basilar artery. This patient had an excellent response to shunting. (Contributed by Dr. Peter Hedera.)

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Associated Disorders

  • Carcinomatous meningitis (Leptomeningeal metastasis)
  • Chronic meningitis
  • Elevated CSF protein level
  • Essential tremor
  • Subarachnoid hemorrhage