CT of vestibular schwannoma
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Author:
Mikael Häggström [notes 1]
Planning
Choice of exam
In suspected vestibular schwannoma, MRI is the preferred modality and can provide tumor characterization, surgical planning and post-therapeutic evaluation. Where MRI is contraindicated CT of vestibular schwannoma can serve as an alternative.[1]
Configurations
Contrast CT is necessary.[1] It should cover the temporal bone, and include thin slices for bone evaluation, as well as thicker slices for soft-tissue evaluation.
Evaluation
Bone evaluation may show erosion and widening of the internal acoustic canal by the tumor.[2]
The tumor itself may be difficult to see on CT. It may have hemorrhagic areas, and typically has no calcification.[2]
Notes
- ↑ For a full list of contributors, see article history. Creators of images are attributed at the image description pages, seen by clicking on the images. See Radlines:Authorship for details.
