Meningioma other imaging findings: Difference between revisions
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==Other Imaging Findings== | ==Other Imaging Findings== | ||
===Diffusion MRI=== | ===Diffusion MRI=== | ||
Diffusion MRI may be helpful in the diagnosis of meningioma. Findings on an diffusion MRI suggestive of/diagnostic of meningioma include: | |||
*Reduced water diffusivity which is seen more in aggressive tumors and atypical/malignant meningiomas | *Reduced water diffusivity which is seen more in aggressive tumors and atypical/malignant meningiomas | ||
*A decrease in the apparent diffusion coefficient raises suspicion that a tumor has differentiated to a higher grade on follow up of a benign meningioma. | |||
====Magnetic resonance spectroscopy==== | ====Magnetic resonance spectroscopy==== | ||
Revision as of 19:47, 12 June 2019
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Meningioma Microchapters |
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Meningioma other imaging findings On the Web |
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American Roentgen Ray Society Images of Meningioma other imaging findings |
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Risk calculators and risk factors for Meningioma other imaging findings |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Haytham Allaham, M.D. [2]
Overview
Other imaging studies for meningioma include magnetic resonance (MR) spectroscopy, magnetic resonance (MR) perfusion, and angiography.[1] MR spectroscopy study for meningioma demonstrates elevated levels of alanine, glutamine, and choline, as well as a significantly reduced levels of N-acetylaspartate and creatine. MR perfusion study for meningioma demonstrates an elevated value of relative cerebral blood volume (rCBV).[2] Angiography of meningioma demonstrates high vascularization of the tumor due to dual blood supply by both pial (intracranial) and meningeal (extracranial) vessels.[1]
Other Imaging Findings
Diffusion MRI
Diffusion MRI may be helpful in the diagnosis of meningioma. Findings on an diffusion MRI suggestive of/diagnostic of meningioma include:
- Reduced water diffusivity which is seen more in aggressive tumors and atypical/malignant meningiomas
- A decrease in the apparent diffusion coefficient raises suspicion that a tumor has differentiated to a higher grade on follow up of a benign meningioma.
Magnetic resonance spectroscopy
- Magnetic resonance (MR) spectroscopy imaging may help distinguish meningioma from other CNS masses. Features include:[1]
Magnetic resonance perfusion
- Magnetic resonance (MR) perfusion imaging may distinguish meningioma from other differential diagnosis. Features include:[2]
- Elevated relative cerebral blood volume (rCBV) value
- Time-intensity curve illustrates a sharp signal drop from baseline with no return to baseline measures
Angiography
- Angiography of meningioma demonstrates:[1]
Gallery
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![Meningioma angiography demonstrating dural sinus invasion[3]](/images/f/f0/Angiography_meningioma_Dr_Bruno_Di_Muzio.JPG)
Meningioma angiography demonstrating dural sinus invasion[3]
![Meningioma angiography demonstrating dural sinus invasion[3]](/index.php/File:Angiography_meningioma_Dr_Bruno_Di_Muzio.JPG)
References
- ↑ 1.0 1.1 1.2 1.3 Meningioma. Radiopaedia(2015) http://radiopaedia.org/articles/meningioma Accessed on September, 25 2015
- ↑ 2.0 2.1 Zimny A, Sasiadek M (2011). "Contribution of perfusion-weighted magnetic resonance imaging in the differentiation of meningiomas and other extra-axial tumors: case reports and literature review". J Neurooncol. 103 (3): 777–83. doi:10.1007/s11060-010-0445-9. PMC 3116130. PMID 21061142.
- ↑ Image courtesy of Dr Bruno Di Muzio Radiopaedia(original file "here"). Creative Commons BY-SA-NC