Difference between revisions of "CT of vestibular schwannoma"
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| + | |author1=[[User:Mikael Häggström|Mikael Häggström]] | ||
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==Planning== | ==Planning== | ||
===Choice of exam=== | ===Choice of exam=== | ||
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===Configurations=== | ===Configurations=== | ||
[[Contrast CT]] is necessary.<ref name="LinCrane2017"/> It should cover the temporal bone, and include thin slices for bone evaluation, as well as thicker slices for soft-tissue evaluation. | [[Contrast CT]] is necessary.<ref name="LinCrane2017"/> It should cover the temporal bone, and include thin slices for bone evaluation, as well as thicker slices for soft-tissue evaluation. | ||
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| + | ==Evaluation== | ||
| + | Bone evaluation may show erosion and widening of the internal acoustic canal by the tumor.<ref name=Gaillard>{{cite web|url=https://radiopaedia.org/articles/acoustic-schwannoma-1|title=Acoustic schwannoma|author=A.Prof Frank Gaillard|website=Radiopaedia|accessdate=2018-10-25}}</ref> | ||
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| + | The tumor itself may be difficult to see on CT. It may have hemorrhagic areas, and typically has no calcification.<ref name=Gaillard/> | ||
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Latest revision as of 18:24, 25 October 2018
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.
