Meningioma MRI: Difference between revisions
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==Overview== | ==Overview== | ||
Brain MRI with gadolinium is the investigation of choice for the diagnosis of meningioma. On brain MRI, meningioma is characterized by a homogeneous, well circumscribed, and extra-axial mass with a broad dural base. Other Findings on brain MRI suggestive of meningioma include CSF vascular cleft sign, dural tail sign, and sunburst or spokewheel appearance of the | Brain [[MRI]] with gadolinium is the investigation of choice for the diagnosis of meningioma. On brain MRI, meningioma is characterized by a [[homogeneous]], well circumscribed, and extra-axial mass with a broad dural base. Other Findings on brain MRI suggestive of meningioma include [[CSF]] [[vascular]] cleft sign, dural tail sign, and sunburst or spokewheel appearance of the [[vessel]]s.<ref name="raio">Meningioma. Radiopaedia(2015) http://radiopaedia.org/articles/meningioma Accessed on September, 25th 2015</ref> | ||
==MRI== | ==MRI== | ||
* Brain MRI with gadolinium is the investigation of choice for the diagnosis of meningioma. | * Brain [[MRI]] with gadolinium is the investigation of choice for the diagnosis of meningioma.<ref name="raio">Meningioma. Radiopaedia(2015) http://radiopaedia.org/articles/meningioma Accessed on September, 25th 2015</ref> | ||
* On | * On brain MRI, meningioma is characterized by a [[homogeneous]], well circumscribed, and extra-axial mass with a broad dural base.<ref name="raio">Meningioma. Radiopaedia(2015) http://radiopaedia.org/articles/meningioma Accessed on September, 25th 2015</ref> | ||
* Other Findings on brain MRI suggestive of meningioma include: | * Other Findings on brain MRI suggestive of meningioma include:<ref name="raio">Meningioma. Radiopaedia(2015) http://radiopaedia.org/articles/meningioma Accessed on September, 25th 2015</ref> | ||
:* Dural tail sign | :* Dural tail sign | ||
:* CSF vascular cleft sign | :* [[CSF]] vascular cleft sign | ||
:* Sunburst or spokewheel appearance of the vessels | :* Sunburst or spokewheel appearance of the vessels | ||
*When the appearance and location of meningioma are typical, the diagnosis can be made with a very high degree of specificity. | *When the appearance and location of meningioma are typical, the diagnosis can be made with a very high degree of specificity.<ref name="raio">Meningioma. Radiopaedia(2015) http://radiopaedia.org/articles/meningioma Accessed on September, 25th 2015</ref> | ||
*In the case of anaplastic meningioma, the degree of edema observed on MRI correlates with the invasion of the surrounding tissue by the tumor. | *In the case of [[anaplastic]] meningioma, the degree of [[edema]] observed on MRI correlates with the invasion of the surrounding tissue by the [[tumor]].<ref name="raio">Meningioma. Radiopaedia(2015) http://radiopaedia.org/articles/meningioma Accessed on September, 25th 2015</ref> | ||
*Meningioma signal characteristics observed on MRI include: | *Meningioma signal characteristics observed on MRI include:<ref name="raio">Meningioma. Radiopaedia(2015) http://radiopaedia.org/articles/meningioma Accessed on September, 25th 2015</ref> | ||
:*T1 weighted image illustrates: | :*T1 weighted image illustrates: | ||
::*Isointense mass in 60-90% of the cases | ::*Isointense mass in 60-90% of the cases | ||
Revision as of 00:36, 27 September 2015
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Meningioma MRI On the Web |
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American Roentgen Ray Society Images of Meningioma MRI |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Haytham Allaham, M.D. [2]
Overview
Brain MRI with gadolinium is the investigation of choice for the diagnosis of meningioma. On brain MRI, meningioma is characterized by a homogeneous, well circumscribed, and extra-axial mass with a broad dural base. Other Findings on brain MRI suggestive of meningioma include CSF vascular cleft sign, dural tail sign, and sunburst or spokewheel appearance of the vessels.[1]
MRI
- Brain MRI with gadolinium is the investigation of choice for the diagnosis of meningioma.[1]
- On brain MRI, meningioma is characterized by a homogeneous, well circumscribed, and extra-axial mass with a broad dural base.[1]
- Other Findings on brain MRI suggestive of meningioma include:[1]
- Dural tail sign
- CSF vascular cleft sign
- Sunburst or spokewheel appearance of the vessels
- When the appearance and location of meningioma are typical, the diagnosis can be made with a very high degree of specificity.[1]
- In the case of anaplastic meningioma, the degree of edema observed on MRI correlates with the invasion of the surrounding tissue by the tumor.[1]
- Meningioma signal characteristics observed on MRI include:[1]
- T1 weighted image illustrates:
- Isointense mass in 60-90% of the cases
- Hypointense mass in 10-40% of cases
- T1 C+ weighted image (image enhanced with gadolinium) usually illustrates an intense and homogeneous enhancement
- T2 weighted image illustrates:
- Isointense mass in 50% of the cases
- Hyperintense mass in 35-40% of the cases
- Hypointense mass in 10-15% of the cases