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.^[1] 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

Magnetic resonance spectroscopy

Magnetic resonance (MR) spectroscopy imaging may help distinguish meningioma from other CNS masses. Features include:^[1]

Elevated alanine level
Elevated glutamine/glutamate level
Elevated choline (Cho) level
Absent or significantly reduced N-acetylaspartate (NAA) level
Absent or significantly reduced creatine (Cr) level

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]

High vascularization of the tumor due to dual blood supply by both pial (intracranial) and meningeal (extracranial) vessels
Spoke wheel appearance
Dense venous filling

Gallery

Meningioma angiography demonstrating dural sinus invasion^[3]

References

↑ ^1.0 ^1.1 ^1.2 ^1.3 ^1.4 Meningioma. Radiopaedia(2015) http://radiopaedia.org/articles/meningioma Accessed on September, 25th 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.CS1 maint: PMC format (link)
↑ Image courtesy of Dr Bruno Di Muzio Radiopaedia(original file "here"). Creative Commons BY-SA-NC

[R-1] 1.0 ^1.1 ^1.2 ^1.3 ^1.4 Meningioma. Radiopaedia(2015) http://radiopaedia.org/articles/meningioma Accessed on September, 25th 2015

[pmid21061142-2] 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.CS1 maint: PMC format (link)

[3] Image courtesy of Dr Bruno Di Muzio Radiopaedia(original file "here"). Creative Commons BY-SA-NC

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