Meningioma other imaging findings
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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 weighted MRI
Diffusion MRI may be helpful in the diagnosis of meningioma. Findings on an diffusion MRI suggestive of/diagnostic of meningioma include:[3]
- 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 may be helpful in the diagnosis of meningioma. Findings on an MR spectroscopy suggestive of/diagnostic of meningioma include:[4]
Perfusion MRI
- Perfusion MRI may be helpful in the diagnosis of meningioma. Findings on an perfusion MRI suggestive of/diagnostic of meningioma include:[2][3]
- Elevated relative cerebral blood volume (rCBV) value
Angiography
- Angiography of meningioma demonstrates:[1]
Gallery
References
- ↑ 1.0 1.1 1.2 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.
- ↑ 3.0 3.1 Saloner D, Uzelac A, Hetts S, Martin A, Dillon W (2010). "Modern meningioma imaging techniques". J Neurooncol. 99 (3): 333–40. doi:10.1007/s11060-010-0367-6. PMC 2945460. PMID 20809250.
- ↑ Demir MK, Iplikcioglu AC, Dincer A, Arslan M, Sav A (2006). "Single voxel proton MR spectroscopy findings of typical and atypical intracranial meningiomas". Eur J Radiol. 60 (1): 48–55. doi:10.1016/j.ejrad.2006.06.002. PMID 16844335.