MCA infarct (M1 occlusion)

Case contributed by Dr Brendon Friesen


Left hemiparesis

Patient Data

Age: 85
Gender: Female

No hemorrhage.

Hyperdense right MCA sign.


Occlusion right M1 MCA.


Incidental left frontal convexity meningioma.


CT perfusion.

Right basal ganglia / external capsule critical hypoperfusion (core) [increased MTT, decreased CBF, decreased CBV].

Larger region of right MCA territory hypoperfusion (penumbra) [increased MTT, decreased CBF, normal CBV].

Case Discussion

Right MCA infarct with M1 MCA occlusion on CTA, hyperdense MCA sign on non-contrast CT, and features of infarction on CT perfusion imaging.

Critical hypoperfusion (core) = increased MTT, decreased CBF, decreased CBV].

Hypoperfusion (penumbra) = increased MTT, decreased CBF, normal CBV.

Incidental left frontal meningioma (presumed - not histologically proven).

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Case information

rID: 30138
Published: 14th Aug 2014
Last edited: 16th Jul 2018
Inclusion in quiz mode: Included

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