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Peripheral signal void ring in giant vertebral aneurysm: MR and pathology findings
Journal of Computer Assisted Tomography
|November 1, 1986
Abstract:
Thin, signal void rims have been noted to surround intracerebral hemorrhages and ruptured intracranial aneurysms on magnetic resonance imaging. Proposed mechanisms include hemosiderin deposition in macrophages and high blood flow. The authors describe an example of a thick, signal void ring in a peripheral luminal thrombus of a giant vertebral aneurysm.
Insights
Signal void rims on MRI, typically thin around brain bleeds, can also appear thick. This study presents a case of a thick signal void ring within a giant vertebral artery aneurysm thrombus.
Area of Science:
- Neuroradiology
- Vascular Imaging
- Neuroscience
Background:
- Thin, signal-void rims are observed around intracerebral hemorrhages and ruptured intracranial aneurysms on MRI.
- Previous hypotheses for these rims include hemosiderin deposition and high blood flow.